WO2013038674A1 - 実質的に面心立方構造を有するルテニウム微粒子およびその製造方法 - Google Patents
実質的に面心立方構造を有するルテニウム微粒子およびその製造方法 Download PDFInfo
- Publication number
- WO2013038674A1 WO2013038674A1 PCT/JP2012/005838 JP2012005838W WO2013038674A1 WO 2013038674 A1 WO2013038674 A1 WO 2013038674A1 JP 2012005838 W JP2012005838 W JP 2012005838W WO 2013038674 A1 WO2013038674 A1 WO 2013038674A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fine particles
- ruthenium
- ruthenium fine
- organic solution
- ray diffraction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/46—Ruthenium, rhodium, osmium or iridium
- B01J23/462—Ruthenium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2235/00—Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties
- B01J2235/15—X-ray diffraction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/20—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state
- B01J35/23—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state in a colloidal state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
- B01J35/45—Nanoparticles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/70—Catalysts, in general, characterised by their form or physical properties characterised by their crystalline properties, e.g. semi-crystalline
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/70—Catalysts, in general, characterised by their form or physical properties characterised by their crystalline properties, e.g. semi-crystalline
- B01J35/77—Compounds characterised by their crystallite size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/082—Decomposition and pyrolysis
- B01J37/086—Decomposition of an organometallic compound, a metal complex or a metal salt of a carboxylic acid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/054—Nanosized particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/07—Metallic powder characterised by particles having a nanoscale microstructure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/04—Alloys based on a platinum group metal
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/02—Elements
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B7/00—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions
- C30B7/14—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions the crystallising materials being formed by chemical reactions in the solution
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/92—Metals of platinum group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2235/00—Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/617—500-1000 m2/g
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0027—Powdering
- B01J37/0045—Drying a slurry, e.g. spray drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0072—Preparation of particles, e.g. dispersion of droplets in an oil bath
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- the present invention relates to ruthenium fine particles having a substantially face-centered cubic structure and a method for producing the same.
- Non-Patent Document 1 a method for producing metal fine particles by reducing a metal compound in a solution has been proposed. A method for producing ruthenium fine particles has also been proposed (Non-Patent Document 1).
- Non-Patent Document 1 ruthenium fine particles having a particle diameter of 2.1 to 6.0 nm are manufactured.
- ethylene glycol or 1,4-butanediol is used as a solvent that also serves as a reducing agent.
- the fine particles of 2.1 to 3.1 nm are prepared by a one-step reduction process using ethylene glycol or 1,4-butanediol.
- fine particles of 3.8 to 6.0 nm are prepared in a two-step process using a ruthenium fine particle of 3.1 nm as a nucleus.
- the fine particles of 3.8 to 6.0 nm are prepared using 1,4-butanediol.
- Non-Patent Document 1 describes that when the particle size of ruthenium fine particles is small, an hcp structure (hexagonal close-packed structure) is adopted, and when the particle size is large, a mixed phase of an fcc structure (face-centered cubic structure) and an hcp structure is obtained. Is described.
- An object of the present invention is to provide ruthenium microparticles substantially consisting only of an fcc structure, and a method for producing the same.
- the ruthenium fine particles of the present invention are ruthenium fine particles having a substantially face-centered cubic structure.
- the ruthenium fine particles can be used as an oxidation catalyst for carbon monoxide.
- the production method of the present invention is a method for producing ruthenium fine particles having a substantially face-centered cubic structure, wherein a solution containing ruthenium (III) acetylacetonate, polyvinylpyrrolidone, and triethylene glycol is heated to 180 ° C. or higher. Including a step (i) of maintaining the temperature.
- ruthenium fine particles substantially having an fcc structure can be obtained.
- FIG. 1 schematically shows a production process of ruthenium fine particles in Example 1.
- 2A shows the X-ray diffraction pattern of the ruthenium fine particles of Example 1.
- FIG. 2B shows an electron microscope image of the ruthenium fine particles of Example 1.
- FIG. 3 shows the X-ray diffraction pattern of the ruthenium fine particles of Example 1 and the calculation result of the X-ray diffraction pattern of the fcc component.
- FIG. 4A shows the X-ray diffraction pattern of the ruthenium fine particles of Example 2 and the calculation result of the X-ray diffraction pattern of the fcc component.
- 4B shows an electron microscopic image of the ruthenium fine particles of Example 2.
- 5A shows the X-ray diffraction pattern of the ruthenium fine particles of Example 3 and the calculation result of the X-ray diffraction pattern of the fcc component.
- 5B is a diagram showing an electron microscope image of the ruthenium fine particles of Example 3.
- FIG. 6A shows the X-ray diffraction pattern of the ruthenium fine particles of Example 4 and the calculation result of the X-ray diffraction pattern of the fcc component.
- 6B is a diagram showing an electron microscope image of the ruthenium fine particles of Example 4.
- FIG. 7A shows the X-ray diffraction pattern of the ruthenium fine particles of Example 5 and the calculation result of the X-ray diffraction pattern of the fcc component.
- FIG. 7B is a diagram showing an electron microscopic image of the ruthenium fine particles of Example 5.
- FIG. 8A shows the X-ray diffraction pattern of the ruthenium fine particles of Example 6 and the calculation result of the X-ray diffraction pattern of the fcc component.
- FIG. 8B is a diagram showing an electron microscope image of the ruthenium fine particles of Example 6.
- FIG. 9A shows an X-ray diffraction pattern of the ruthenium fine particles of Comparative Example 1.
- FIG. 9B shows an electron microscope image of the ruthenium fine particles of Comparative Example 1.
- FIG. 10 shows X-ray diffraction patterns of the ruthenium fine particles of Example 7 and Comparative Example 2.
- FIG. 11 shows an X-ray diffraction pattern of a ruthenium fine particle having an hcp structure and a calculation result thereof.
- FIG. 12 is a graph showing the relationship between CO oxidation activity and temperature for the ruthenium fine particles of Example 4 and the ruthenium fine particles having the hcp structure.
- the production method of the present invention is a method for producing ruthenium fine particles having a substantially face-centered cubic structure.
- “having a substantially face-centered cubic structure” means that an X-ray diffraction pattern obtained by X-ray diffraction measurement can be fitted only by a face-centered cubic lattice having a space group Fm-3m.
- the ruthenium fine particles of the present invention are fine particles in which a structure other than the face-centered cubic structure is not substantially observed by X-ray diffraction measurement.
- a preferred example of the ruthenium fine particles of the present invention consists of a face-centered cubic structure only.
- the face-centered cubic structure may be referred to as “fcc structure”
- the hexagonal close-packed structure may be referred to as “hcp structure”.
- the production method of the present invention comprises a step of maintaining a solution containing ruthenium (III) acetylacetonate (Ru (CH 3 COCHCOCH 3 ) 3 ), polyvinylpyrrolidone and triethylene glycol at a temperature of 180 ° C. or higher (step (i)). )including.
- step (i) ruthenium in the ruthenium compound is reduced to produce ruthenium fine particles.
- organic solution (S) a solution containing ruthenium (III) acetylacetonate, polyvinylpyrrolidone, and triethylene glycol
- ruthenium (III) acetylacetonate is sometimes abbreviated as “Ru (acac) 3 ”.
- step (i) the organic solution (S) is maintained at a temperature of 180 ° C. or higher.
- “temperature of 180 ° C. or higher” include temperatures in the range of 180 ° C. to 220 ° C., temperatures in the range of 190 ° C. to 220 ° C., and temperatures in the range of 200 ° C. to 220 ° C.
- the organic solution (S) may be maintained at a temperature in the range of 180 ° C. to 220 ° C.
- the time for maintaining the organic solution (S) at a temperature of 180 ° C. or higher may be in the range of 1 minute to 6 hours, for example, in the range of 5 minutes to 3 hours, depending on the temperature. Good.
- PVP polyvinylpyrrolidone
- the temperature of the organic solution (S) in step (i), the time for maintaining the temperature, and the concentrations of PVP and Ru (acac) 3 contained in the organic solution (S) are shown in Examples 1 to 7 described later. You may select from a range.
- Step (i) of the first example includes steps (a) and (b).
- step (a) a first organic solution containing polyvinylpyrrolidone and triethylene glycol and a second organic solution containing ruthenium (III) acetylacetonate are prepared.
- step (b) the second organic solution is sprayed onto the first organic solution heated to a temperature of 180 ° C. or higher (for example, a temperature in the range of 200 ° C. to 220 ° C.).
- a temperature of 180 ° C. or higher for example, a temperature in the range of 200 ° C. to 220 ° C.
- the second organic solution may be sprayed onto the first organic solution in a heated state.
- step (b) the organic solution (S) is prepared by mixing the first organic solution and the second organic solution.
- the organic solution (S) is held at a temperature of 180 ° C. or higher (for example, a temperature in the range of 200 ° C. to 220 ° C.) for a certain period of time.
- Step (i) may include a step of dripping the second solution into the heated first solution.
- step (i) may include a step of dropping the second organic solution into the first organic solution heated to a temperature of 180 ° C. or higher.
- Step (i) of the second example includes a step of preparing a solution (organic solution (S)) containing ruthenium (III) acetylacetonate, polyvinylpyrrolidone and triethylene glycol, and 180 steps of the organic solution (S). Heating to a temperature of not lower than ° C. and holding at that temperature for a certain period of time.
- a solution organic solution (S)) containing ruthenium (III) acetylacetonate, polyvinylpyrrolidone and triethylene glycol
- the ruthenium fine particles of the present invention substantially have an fcc structure.
- the ruthenium fine particles of the present invention can be produced by the production method of the present invention.
- the average particle diameter of the ruthenium fine particles of the present invention may be 7 nm or less, 6 nm or less, or 5 nm or less.
- the average particle diameter may be in the range of 2 nm to 7 nm, 2 nm to 6 nm, or 2.6 nm to 5.1 nm. May be.
- the average particle size is a value calculated by measuring the particle size of at least 100 fine particles from a particle image obtained by a transmission electron microscope and obtaining the average.
- the ruthenium fine particles of the present invention having an fcc structure can be used for various applications, for example, catalysts used for organic synthesis, fuel cell electrodes, memory materials, and the like.
- Ruthenium fine particles having an fcc structure have high oxidation activity of carbon monoxide (CO). Since carbon monoxide causes poisoning of the electrode catalyst of the fuel cell, the oxidation catalyst of carbon monoxide is particularly important in the field of fuel cells.
- Ru (acac) 3 used in the following examples was obtained from Wako Pure Chemical Industries, Ltd.
- Example 1 In Example 1, an example in which ruthenium fine particles are produced by the production method of the present invention will be described.
- a first organic solution was prepared by dissolving 1.0 mmol of PVP in 100 ml of triethylene glycol.
- a second organic solution was prepared by dissolving Ru (acac) 3 in 40 ml of ethanol.
- the concentration of Ru (acac) 3 in the second organic solution was 2.5 mM (mmol / l).
- the first organic solution was heated to 220 ° C.
- the second organic solution 12 was sprayed onto the first organic solution 11 by spraying.
- the resulting mixture was held at 220 ° C. for 5 minutes.
- a colloidal solution of ruthenium fine particles having an average particle diameter of 4.6 ⁇ 1.1 nm was obtained.
- “4.6 nm” indicates the average particle diameter
- “ ⁇ 1.1 nm” indicates the standard deviation (the same applies to the display of the average particle diameter below).
- the average particle size was measured by the method described above (the same applies to the following).
- the obtained ruthenium fine particles were observed with an X-ray diffraction measurement and an electron microscope.
- FIG. 2A The measured X-ray diffraction pattern is shown in FIG. 2A, and the electron microscope image is shown in FIG. 2B.
- FIG. 2B For reference, an X-ray diffraction pattern of ruthenium fine particles having an hcp structure is also shown in FIG. 2A.
- FIG. 3 shows the X-ray diffraction pattern of the ruthenium fine particles of Example 1 and the calculation result of the X-ray diffraction pattern of the fcc component.
- the calculation result of the X-ray diffraction pattern was obtained by the Le Bail method (the same applies to the following calculation results). From FIG. 2A and FIG. 3, it was found that the ruthenium fine particles of Example 1 had an fcc structure instead of an hcp structure.
- the X-ray diffraction pattern of the ruthenium fine particles of Example 1 was not able to be fit properly in the hcp structure space group P6 3 / mmc, but was able to be fit only in the fcc structure space group Fm-3m.
- Example 2 In Example 2, another example in which ruthenium fine particles are produced by the production method of the present invention will be described.
- a first organic solution was prepared by dissolving 0.25 mmol of PVP in 100 ml of triethylene glycol.
- a second organic solution was prepared by dissolving Ru (acac) 3 in 10 ml of ethanol.
- the concentration of Ru (acac) 3 in the second organic solution was 2.5 mM (mmol / l).
- the first organic solution was heated to 200 ° C.
- the second organic solution 12 was sprayed onto the first organic solution 11 by spraying.
- the resulting mixture was held at 200 ° C. for 10 minutes.
- a colloidal solution of ruthenium fine particles having an average particle diameter of 4.4 ⁇ 0.9 nm was obtained.
- the obtained ruthenium fine particles were measured in the same manner as in Example 1.
- FIG. 4A The measured X-ray diffraction pattern is shown in FIG. 4A, and the electron microscope image is shown in FIG. 4B.
- FIG. 4A also shows the calculation result of the X-ray diffraction pattern of the fcc component.
- FIG. 4A shows that the ruthenium fine particles of Example 2 have an fcc structure instead of an hcp structure.
- Example 3 In Example 3, another example in which ruthenium fine particles are produced by the production method of the present invention will be described.
- an organic solution was prepared by mixing 20 ml of triethylene glycol, 0.05 mmol of PVP, 2 ml of ethanol, and Ru (acac) 3 .
- the concentration of Ru (acac) 3 in the organic solution was 2.3 mM (mmol / l).
- FIG. 5A The measured X-ray diffraction pattern is shown in FIG. 5A, and the electron microscope image is shown in FIG. 5B.
- FIG. 5A also shows the calculation result of the X-ray diffraction pattern of the fcc component.
- FIG. 5A shows that the ruthenium fine particles of Example 3 have an fcc structure instead of an hcp structure.
- Example 4 In Example 4, another example in which ruthenium fine particles are produced by the production method of the present invention will be described.
- an organic solution was prepared by mixing 200 ml of triethylene glycol, 10.0 mmol of PVP, and an ethanol solution of Ru (acac) 3 .
- a solution of Ru (acac) 3 in ethanol was prepared by dissolving 2.0 mmol of Ru (acac) 3 in 5 ml of ethanol.
- the organic solution was refluxed at 220 ° C. for 3 hours. That is, the organic solution was held at 220 ° C. for 3 hours.
- a colloidal solution of ruthenium fine particles having an average particle diameter of 2.6 ⁇ 0.8 nm was obtained.
- the obtained ruthenium fine particles were measured in the same manner as in Example 1.
- FIG. 6A The measured X-ray diffraction pattern is shown in FIG. 6A, and the electron microscope image is shown in FIG. 6B.
- FIG. 6A also shows the calculation result of the X-ray diffraction pattern of the fcc component.
- FIG. 6A shows that the ruthenium fine particles of Example 4 have an fcc structure instead of an hcp structure.
- Example 5 In Example 5, another example in which ruthenium fine particles are produced by the production method of the present invention will be described.
- an organic solution was prepared by mixing 50 ml of triethylene glycol, 1.0 mmol of PVP, and an ethanol solution of Ru (acac) 3 .
- a solution of Ru (acac) 3 in ethanol was prepared by dissolving 2.0 mmol of Ru (acac) 3 in 5 ml of ethanol.
- the organic solution was refluxed at 220 ° C. for 3 hours. That is, the organic solution was held at 220 ° C. for 3 hours.
- a colloidal solution of ruthenium fine particles having an average particle diameter of 3.9 ⁇ 0.8 nm was obtained.
- the obtained ruthenium fine particles were measured in the same manner as in Example 1.
- FIG. 7A The measured X-ray diffraction pattern is shown in FIG. 7A, and the electron microscope image is shown in FIG. 7B.
- FIG. 7A also shows the calculation result of the X-ray diffraction pattern of the fcc component.
- FIG. 7A shows that the ruthenium fine particles of Example 5 have an fcc structure instead of an hcp structure.
- Example 6 In Example 6, another example in which ruthenium fine particles are produced by the production method of the present invention will be described.
- a first organic solution was prepared by dissolving 3.0 mmol of PVP in 100 ml of triethylene glycol.
- a second organic solution was prepared by dissolving 3.0 mmol of Ru (acac) 3 in 80 ml of ethanol.
- the 2nd organic solution was added to the 1st organic solution heated at 220 degreeC, and the obtained liquid mixture was hold
- a colloidal solution of ruthenium fine particles having an average particle diameter of 5.1 ⁇ 1.4 nm was obtained.
- the obtained ruthenium fine particles were measured in the same manner as in Example 1.
- FIG. 8A The measured X-ray diffraction pattern is shown in FIG. 8A, and the electron microscope image is shown in FIG. 8B.
- FIG. 8A also shows the calculation result of the X-ray diffraction pattern of the fcc component.
- FIG. 8A shows that the ruthenium fine particles of Example 6 have an fcc structure instead of an hcp structure.
- Comparative Example 1 In Comparative Example 1, another example of producing ruthenium fine particles will be described. First, an organic solution was prepared by dissolving 10.0 mmol of PVP in 100 ml of triethylene glycol. Also, an aqueous solution was prepared by dissolving ruthenium (III) chloride hydrate (RuCl 3 .nH 2 O) in 40 ml of water. The concentration of ruthenium (III) chloride hydrate in the aqueous solution was 2.5 mM (mmol / l).
- the organic solution was heated to 220 ° C. And like FIG. 1, the said aqueous solution was sprayed on the organic solution with the atomization. The resulting mixture was held at 220 ° C. for 5 minutes. As a result, a colloidal solution of ruthenium fine particles having an average particle diameter of 5.6 ⁇ 1.6 nm was obtained. The obtained ruthenium fine particles were measured in the same manner as in Example 1.
- FIG. 9A The measured X-ray diffraction pattern is shown in FIG. 9A, and the electron microscope image is shown in FIG. 9B.
- FIG. 9A also shows the calculation result of the X-ray diffraction pattern of the hcp component calculated by the Le Vert method.
- FIG. 9A shows that the ruthenium fine particles of Comparative Example 1 have an hcp structure.
- Example 7 In Example 7, another example in which ruthenium fine particles are produced by the production method of the present invention will be described.
- an organic solution was prepared by mixing 20 ml of triethylene glycol, 1.0 mmol of PVP, and 0.1 mmol of Ru (acac) 3 .
- the organic solution was heated at 80 ° C. for 20 minutes under vacuum.
- This organic solution was then heated at 180 ° C. for 2 hours under an argon atmosphere. In this way, a colloidal solution of ruthenium fine particles was obtained.
- the X-ray diffraction pattern of the obtained ruthenium fine particles was measured in the same manner as in Example 1.
- the measured X-ray diffraction pattern is shown in FIG. From this X-ray diffraction pattern, it was found that the ruthenium fine particles of Example 7 had an fcc structure instead of an hcp structure.
- Comparative Example 2 In Comparative Example 2, another example of producing ruthenium fine particles will be described.
- a first organic solution was prepared by dissolving 5.0 mmol of PVP in 25 ml of ethylene glycol.
- a second organic solution was prepared by dissolving 1.0 mmol of Ru (acac) 3 in 40 ml of ethylene glycol.
- the first organic solution was heated to 190 ° C.
- the second organic solution was dropped into the heated first organic solution.
- the resulting mixture was held at 190 ° C. for 10 minutes. In this way, a colloidal solution of ruthenium fine particles was obtained.
- the X-ray diffraction pattern of the obtained ruthenium fine particles was measured in the same manner as in Example 1.
- the measured X-ray diffraction pattern is shown in FIG. From this X-ray diffraction pattern, it was found that the ruthenium fine particles of Comparative Example 2 had an hcp structure.
- ruthenium fine particles substantially having an fcc structure were obtained by the production method of the present invention.
- ruthenium fine particles substantially having an fcc structure can be obtained in a single reduction process. According to this manufacturing method, it is possible to obtain ruthenium fine particles in which the entire particle has a substantially fcc structure.
- the ruthenium fine particles having an fcc structure (average particle diameter 2.6 ⁇ 0.8 nm) prepared in Example 4 are supported on ⁇ -alumina fine particles (support), whereby the catalyst fine particles having a ruthenium loading of 1 wt%.
- a part of the aqueous dispersion (1) in which the catalyst fine particles were dispersed was collected with a pipette, and this was put into purified water and subjected to ultrasonic treatment. In this way, an aqueous dispersion (2) of catalyst fine particles was obtained.
- ⁇ -alumina powder preliminarily calcined at 800 ° C. for 5 hours (catalyst society reference catalyst JRC-ALO8) was added to the aqueous dispersion (2), and the obtained aqueous dispersion was added using a magnetic stirrer. And stirred for 12 hours.
- the dispersion after stirring was transferred to a rotary evaporator and dried to a powder by heating to 60 ° C. under reduced pressure. Thereafter, the obtained powder was allowed to stand in a dryer at 120 ° C. for 8 hours to remove moisture from the powder.
- the dried powder (catalyst) was sufficiently pulverized in a mortar, and then formed into a disk shape by a uniaxial molding machine under conditions of 1.2 MPa and 5 minutes.
- the obtained molded body was crushed and then passed through a sieve to obtain catalyst fine particles having a diameter of 180 to 250 ⁇ m.
- the temperature of the catalyst layer was raised by 5 ° C., and the exhaust gas was analyzed again 30 minutes after the temperature increase. While repeating this operation, the temperature of the catalyst layer was increased until the CO conversion rate (oxidation rate) reached 100%. Thus, the relationship between CO oxidation activity and temperature was measured.
- ruthenium fine particles having an hcp structure were prepared, and the relationship between CO oxidation activity and temperature was measured by the same method as described above.
- Ruthenium fine particles having an hcp structure were produced by the following method. First, triethylene glycol 200 ml, PVP10.0Mmol, water 5 ml, and by mixing RuCl 3 ⁇ nH 2 O, was prepared RuCl 3 ⁇ nH 2 O solution. The concentration of RuCl 3 ⁇ nH 2 O in this solution was 9.5 mM (mmol / l). Next, the solution was heated to 180 ° C. and held at 180 ° C. for 1 hour.
- FIG. 11 also shows the calculation result of the X-ray diffraction pattern of ruthenium fine particles consisting only of the hcp structure. As shown in FIG. 11, the X-ray diffraction pattern of the ruthenium fine particles could be fitted only by the hcp structure.
- the evaluation results of the CO oxidation activity are shown in FIG.
- the vertical axis in FIG. 12 indicates the rate at which CO is oxidized and converted to CO 2 .
- the ruthenium fine particles of Example 4 having the fcc structure had higher CO oxidation activity than the ruthenium fine particles having the hcp structure.
- the temperature at which the CO oxidation rate becomes 50% was about 195 ° C. for the ruthenium fine particles having the hcp structure, but 180 ° C. or less (about 175 ° C.) for the ruthenium fine particles of Example 4.
- the present invention can be used for ruthenium fine particles (ruthenium nanoparticles) having an fcc structure and a method for producing the same.
- Ruthenium fine particles having an fcc structure can be used in various applications, for example, catalysts used for organic synthesis, fuel cell electrodes, memory materials, and the like. There is a possibility that ruthenium fine particles having an fcc structure exhibit significantly higher characteristics than existing ruthenium fine particles having an hcp structure.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nanotechnology (AREA)
- General Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Electrochemistry (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Catalysts (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
- Inert Electrodes (AREA)
- Carbon And Carbon Compounds (AREA)
- Dispersion Chemistry (AREA)
Abstract
Description
本発明の製造方法は、実質的に面心立方構造を有するルテニウム微粒子の製造方法である。ここで、「実質的に面心立方構造を有する」とは、X線回折測定で得られたX線回折パターンが、空間群Fm-3mを有する面心立方格子のみによってフィッティングできることを意味する。別の観点では、本発明のルテニウム微粒子は、X線回折測定で、面心立方構造以外の構造が実質的に観測されない微粒子である。本発明のルテニウム微粒子の好ましい一例は、面心立方構造のみからなる。以下では、面心立方構造を「fcc構造」という場合があり、六方最密充填構造を「hcp構造」という場合がある。
本発明のルテニウム微粒子は、実質的にfcc構造を有する。本発明のルテニウム微粒子は、本発明の製造方法によって製造できる。
実施例1では、本発明の製造方法でルテニウム微粒子を製造した一例について説明する。まず、トリエチレングリコール100mlにPVP1.0mmolを溶解することによって、第1の有機溶液を調製した。また、エタノール40mlにRu(acac)3を溶解することによって、第2の有機溶液を調製した。第2の有機溶液中のRu(acac)3の濃度は、2.5mM(mmol/l)とした。
実施例2では、本発明の製造方法でルテニウム微粒子を製造した他の一例について説明する。まず、トリエチレングリコール100mlにPVP0.25mmolを溶解することによって、第1の有機溶液を調製した。また、エタノール10mlにRu(acac)3を溶解することによって、第2の有機溶液を調製した。第2の有機溶液中のRu(acac)3の濃度は、2.5mM(mmol/l)とした。
実施例3では、本発明の製造方法でルテニウム微粒子を製造した他の一例について説明する。まず、トリエチレングリコール20ml、PVP0.05mmol、エタノール2ml、およびRu(acac)3を混合することによって、有機溶液を調製した。有機溶液中のRu(acac)3の濃度は、2.3mM(mmol/l)とした。
実施例4では、本発明の製造方法でルテニウム微粒子を製造した他の一例について説明する。まず、トリエチレングリコール200mlと、PVP10.0mmolと、Ru(acac)3のエタノール溶液とを混合することによって、有機溶液を調製した。Ru(acac)3のエタノール溶液は、エタノール5mlに、2.0mmolのRu(acac)3を溶解することによって調製した。
実施例5では、本発明の製造方法でルテニウム微粒子を製造した他の一例について説明する。まず、トリエチレングリコール50mlと、PVP1.0mmolと、Ru(acac)3のエタノール溶液とを混合することによって、有機溶液を調製した。Ru(acac)3のエタノール溶液は、エタノール5mlに、2.0mmolのRu(acac)3を溶解することによって調製した。
実施例6では、本発明の製造方法でルテニウム微粒子を製造した他の一例について説明する。まず、PVP3.0mmolをトリエチレングリコール100mlに溶解することによって第1の有機溶液を調製した。また、エタノール80mlに、3.0mmolのRu(acac)3を溶解することによって、第2の有機溶液を調製した。次に、220℃に加熱した第1の有機溶液に第2の有機溶液を添加し、得られた混合液を220℃で15分間保持した。その結果、平均粒径が5.1±1.4nmのルテニウム微粒子のコロイド溶液が得られた。得られたルテニウム微粒子について、実施例1と同様の測定を行った。
比較例1では、ルテニウム微粒子を製造した他の一例について説明する。まず、トリエチレングリコール100mlにPVP10.0mmolを溶解することによって、有機溶液を調製した。また、水40mlに塩化ルテニウム(III)水和物(RuCl3・nH2O)を溶解することによって、水溶液を調製した。水溶液中の塩化ルテニウム(III)水和物の濃度は、2.5mM(mmol/l)とした。
実施例7では、本発明の製造方法でルテニウム微粒子を製造した他の一例について説明する。まず、トリエチレングリコール20mlと、PVP1.0mmolと、Ru(acac)30.1mmolとを混合することによって、有機溶液を調製した。この有機溶液を、真空下において、80℃で20分間加熱した。この有機溶液を、次に、アルゴン雰囲気下において、180℃で2時間加熱した。このようにして、ルテニウム微粒子のコロイド溶液を得た。
比較例2では、ルテニウム微粒子を製造した他の一例について説明する。まず、エチレングリコール25mlにPVP5.0mmolを溶解することによって、第1の有機溶液を調製した。また、エチレングリコール40mlに1.0mmolのRu(acac)3を溶解することによって、第2の有機溶液を調製した。
実施例4で作製したfcc構造を有するルテニウム微粒子(平均粒径2.6±0.8nm)を、γ-アルミナ微粒子(担体)に担持させることによって、ルテニウムの担持量が1wt%である触媒微粒子を作製した。この触媒微粒子が分散された水分散液(1)の一部をピペットで採取し、これを精製水に投入して超音波処理した。このようにして、触媒微粒子の水分散液(2)を得た。
Claims (5)
- 実質的に面心立方構造を有するルテニウム微粒子。
- 請求項1に記載のルテニウム微粒子を用いた一酸化炭素の酸化触媒。
- 実質的に面心立方構造を有するルテニウム微粒子の製造方法であって、
ルテニウム(III)アセチルアセトナートとポリビニルピロリドンとトリエチレングリコールとを含む溶液を180℃以上の温度に保持する工程(i)を含む、製造方法。 - 前記(i)の工程において、前記溶液を180℃~220℃の範囲の温度に保持する、請求項3に記載の製造方法。
- 前記工程(i)が、
(a)ポリビニルピロリドンとトリエチレングリコールとを含む第1の有機溶液と、ルテニウム(III)アセチルアセトナートを含む第2の有機溶液とを準備する工程と、
(b)200℃~220℃の範囲の温度に加熱した前記第1の有機溶液に、前記第2の有機溶液を噴霧する工程とを含む、請求項3に記載の製造方法。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020147009262A KR20140089349A (ko) | 2011-09-16 | 2012-09-13 | 실질적으로 면심 입방 구조를 가지는 루테늄 미립자 및 그 제조 방법 |
| CN201280044587.5A CN103796775B (zh) | 2011-09-16 | 2012-09-13 | 实质上具有面心立方结构的钌微粒及其制造方法 |
| JP2013533507A JP5657805B2 (ja) | 2011-09-16 | 2012-09-13 | 実質的に面心立方構造を有するルテニウム微粒子およびその製造方法 |
| EP12832108.0A EP2756899B1 (en) | 2011-09-16 | 2012-09-13 | A plurality of ruthenium nanoparticles, use and method for producing same |
| US14/344,840 US11035053B2 (en) | 2011-09-16 | 2012-09-13 | Ruthenium nanoparticles with essentially face-centered cubic structure and method for producing the same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-202735 | 2011-09-16 | ||
| JP2011202735 | 2011-09-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013038674A1 true WO2013038674A1 (ja) | 2013-03-21 |
Family
ID=47882923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2012/005838 Ceased WO2013038674A1 (ja) | 2011-09-16 | 2012-09-13 | 実質的に面心立方構造を有するルテニウム微粒子およびその製造方法 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US11035053B2 (ja) |
| EP (1) | EP2756899B1 (ja) |
| JP (2) | JP5657805B2 (ja) |
| KR (1) | KR20140089349A (ja) |
| CN (1) | CN103796775B (ja) |
| WO (1) | WO2013038674A1 (ja) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016136939A1 (ja) * | 2015-02-28 | 2016-09-01 | 株式会社フルヤ金属 | 高分子保護材フリー担持触媒の製造方法 |
| WO2016136938A1 (ja) * | 2015-02-28 | 2016-09-01 | 株式会社フルヤ金属 | 高分子保護材フリー担持触媒の製造方法 |
| JP2016159225A (ja) * | 2015-02-28 | 2016-09-05 | 東洋紡株式会社 | Ru(fcc)担持体を用いたアルデヒド類除去材 |
| JP2016163879A (ja) * | 2015-02-28 | 2016-09-08 | 株式会社フルヤ金属 | 担持触媒の製造方法 |
| US20160311028A1 (en) * | 2014-07-09 | 2016-10-27 | Honda Motor Co., Ltd. | Method for synthesis of ruthenium nanoparticles with face-centered cubic and hexagonal close-packed structures |
| US9969006B2 (en) | 2014-07-09 | 2018-05-15 | Honda Motor Co., Ltd. | Method for production of indium nanoparticles |
| JP2018188701A (ja) * | 2017-05-01 | 2018-11-29 | 国立大学法人東京工業大学 | 水電気分解装置、膜電極接合体、Ru系ナノ粒子連結触媒およびRu系ナノ粒子連結触媒層の製造方法、燃料電池並びにメタンの水素化用触媒 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140089349A (ko) * | 2011-09-16 | 2014-07-14 | 도꾸리쯔교세이호징 가가꾸 기쥬쯔 신꼬 기꼬 | 실질적으로 면심 입방 구조를 가지는 루테늄 미립자 및 그 제조 방법 |
| CN106312087B (zh) | 2015-07-03 | 2019-02-22 | 王东 | 纳米金属颗粒及其制备方法 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003178764A (ja) * | 2001-12-12 | 2003-06-27 | Honda Motor Co Ltd | 固体高分子型燃料電池用電極構造体 |
| JP2007213890A (ja) * | 2006-02-08 | 2007-08-23 | Mitsubishi Materials Corp | 固体電解質形燃料電池用発電セルにおける燃料極を構成する燃料極材料 |
| JP2007308754A (ja) * | 2006-05-18 | 2007-11-29 | Shinshu Univ | 金属微粒子の製造方法、金属微粒子−炭素複合体の製造方法および金属微粒子−炭素複合体 |
| JP2012041581A (ja) * | 2010-08-17 | 2012-03-01 | Sony Corp | コアシェル型微粒子及びこれを用いた機能デバイス |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7347885B1 (en) * | 2001-12-10 | 2008-03-25 | The United States Of America As Represented By The Secretary Of The Navy | Synthesis of metal nanoparticle compositions from metallic and ethynyl compounds |
| US7497942B2 (en) * | 2003-06-06 | 2009-03-03 | Basf Catalysts, Llc | Catalyst additives for the removal of NH3 and HCN |
| JP4490201B2 (ja) * | 2004-08-04 | 2010-06-23 | Dowaホールディングス株式会社 | 凹凸表面をもつ微細な合金粒子粉末およびその製造法 |
| JP4625980B2 (ja) * | 2004-08-16 | 2011-02-02 | Dowaエレクトロニクス株式会社 | fcc構造を有する磁気記録媒体用合金粒子粉末の製造法 |
| US20060189113A1 (en) * | 2005-01-14 | 2006-08-24 | Cabot Corporation | Metal nanoparticle compositions |
| EP1850411B1 (en) | 2005-02-18 | 2012-04-18 | Mitsubishi Materials Corporation | Power generation cell for solid electrolyte fuel battery and structure of fuel electrode in said cell |
| JP2007213891A (ja) * | 2006-02-08 | 2007-08-23 | Mitsubishi Materials Corp | 固体電解質形燃料電池用発電セル |
| KR101074153B1 (ko) | 2008-08-28 | 2011-10-17 | 한국화학연구원 | 폴리이미드-금속산화물 복합나노입자 및 이의 제조방법 |
| JP5639045B2 (ja) | 2009-04-24 | 2014-12-10 | 独立行政法人科学技術振興機構 | 固溶体型合金微粒子からなる微粒子群の製造方法 |
| US8951673B2 (en) * | 2011-06-22 | 2015-02-10 | The Board Of Trustees Of The Leland Stanford Junior University | High rate, long cycle life battery electrode materials with an open framework structure |
| KR20140089349A (ko) * | 2011-09-16 | 2014-07-14 | 도꾸리쯔교세이호징 가가꾸 기쥬쯔 신꼬 기꼬 | 실질적으로 면심 입방 구조를 가지는 루테늄 미립자 및 그 제조 방법 |
| US9957168B2 (en) * | 2014-07-09 | 2018-05-01 | Honda Motor Co., Ltd. | Method for synthesis of ruthenium nanoparticles with face-centered cubic and hexagonal close-packed structures |
-
2012
- 2012-09-13 KR KR1020147009262A patent/KR20140089349A/ko not_active Ceased
- 2012-09-13 WO PCT/JP2012/005838 patent/WO2013038674A1/ja not_active Ceased
- 2012-09-13 EP EP12832108.0A patent/EP2756899B1/en active Active
- 2012-09-13 CN CN201280044587.5A patent/CN103796775B/zh active Active
- 2012-09-13 US US14/344,840 patent/US11035053B2/en active Active
- 2012-09-13 JP JP2013533507A patent/JP5657805B2/ja active Active
-
2014
- 2014-06-11 JP JP2014120166A patent/JP5715726B2/ja active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003178764A (ja) * | 2001-12-12 | 2003-06-27 | Honda Motor Co Ltd | 固体高分子型燃料電池用電極構造体 |
| JP2007213890A (ja) * | 2006-02-08 | 2007-08-23 | Mitsubishi Materials Corp | 固体電解質形燃料電池用発電セルにおける燃料極を構成する燃料極材料 |
| JP2007308754A (ja) * | 2006-05-18 | 2007-11-29 | Shinshu Univ | 金属微粒子の製造方法、金属微粒子−炭素複合体の製造方法および金属微粒子−炭素複合体 |
| JP2012041581A (ja) * | 2010-08-17 | 2012-03-01 | Sony Corp | コアシェル型微粒子及びこれを用いた機能デバイス |
Non-Patent Citations (2)
| Title |
|---|
| NANO LETTERS, vol. 10, 2010, pages 2709 - 2713 |
| See also references of EP2756899A4 |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160311028A1 (en) * | 2014-07-09 | 2016-10-27 | Honda Motor Co., Ltd. | Method for synthesis of ruthenium nanoparticles with face-centered cubic and hexagonal close-packed structures |
| US9957168B2 (en) * | 2014-07-09 | 2018-05-01 | Honda Motor Co., Ltd. | Method for synthesis of ruthenium nanoparticles with face-centered cubic and hexagonal close-packed structures |
| US9969006B2 (en) | 2014-07-09 | 2018-05-15 | Honda Motor Co., Ltd. | Method for production of indium nanoparticles |
| US10195668B2 (en) | 2014-07-09 | 2019-02-05 | Honda Motor Co., Ltd. | Method for continuous and controllable production of single walled carbon nanotubes |
| US10933471B2 (en) | 2014-07-09 | 2021-03-02 | Honda Motor Co., Ltd. | Method for continuous and controllable production of single walled carbon nanotubes |
| WO2016136939A1 (ja) * | 2015-02-28 | 2016-09-01 | 株式会社フルヤ金属 | 高分子保護材フリー担持触媒の製造方法 |
| WO2016136938A1 (ja) * | 2015-02-28 | 2016-09-01 | 株式会社フルヤ金属 | 高分子保護材フリー担持触媒の製造方法 |
| JP2016159225A (ja) * | 2015-02-28 | 2016-09-05 | 東洋紡株式会社 | Ru(fcc)担持体を用いたアルデヒド類除去材 |
| JP2016159222A (ja) * | 2015-02-28 | 2016-09-05 | 株式会社フルヤ金属 | 高分子保護材フリー担持触媒の製造方法 |
| JP2016163879A (ja) * | 2015-02-28 | 2016-09-08 | 株式会社フルヤ金属 | 担持触媒の製造方法 |
| JPWO2016136939A1 (ja) * | 2015-02-28 | 2017-12-07 | 株式会社フルヤ金属 | 高分子保護材フリー担持触媒の製造方法 |
| JP2018188701A (ja) * | 2017-05-01 | 2018-11-29 | 国立大学法人東京工業大学 | 水電気分解装置、膜電極接合体、Ru系ナノ粒子連結触媒およびRu系ナノ粒子連結触媒層の製造方法、燃料電池並びにメタンの水素化用触媒 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2756899A1 (en) | 2014-07-23 |
| CN103796775A (zh) | 2014-05-14 |
| JP2014240523A (ja) | 2014-12-25 |
| JP5715726B2 (ja) | 2015-05-13 |
| JP5657805B2 (ja) | 2015-01-21 |
| EP2756899A4 (en) | 2015-05-27 |
| US20140377126A1 (en) | 2014-12-25 |
| US11035053B2 (en) | 2021-06-15 |
| CN103796775B (zh) | 2016-08-24 |
| EP2756899B1 (en) | 2020-04-08 |
| JPWO2013038674A1 (ja) | 2015-03-23 |
| KR20140089349A (ko) | 2014-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5715726B2 (ja) | 実質的に面心立方構造を有するルテニウム微粒子およびその製造方法 | |
| CN107252702B (zh) | 一种Co-N-C/SiO2复合纳米催化剂、其制备方法及应用 | |
| CN101703935B (zh) | 一种负载型金属催化剂及其制备方法 | |
| CN107930697A (zh) | 一种用于催化氨硼烷水解制氢的Pt/ZIF‑67复合材料 | |
| Lo et al. | Probing the interface between encapsulated nanoparticles and metal–organic frameworks for catalytic selectivity control | |
| CN112938936B (zh) | 一种金属原子负载的纳米复合材料及其制备方法 | |
| EP4025339B1 (en) | Materials comprising carbon-embedded cobalt nanoparticles, processes for their manufacture, and use as heterogeneous catalysts | |
| EP4025340B1 (en) | Materials comprising carbon-embedded nickel nanoparticles, processes for their manufacture, and use as heterogeneous catalysts | |
| CN106000444A (zh) | 一种快速制备高分散镍基甲烷二氧化碳重整催化剂的制备方法 | |
| CN106881083A (zh) | 一种尺寸可控的金纳米粒子催化剂合成方法及金催化剂和应用 | |
| CN110665546A (zh) | 一种贵金属/氨基MOFs选择性加氢催化剂、制备方法及其用途 | |
| Zhang et al. | Structural design of metal catalysts based on ZIFs: From nanoscale to atomic level | |
| CN106563510A (zh) | 一种在微孔材料的内部孔道中担载超细Pt金属纳米粒子的方法 | |
| AU2020342461B2 (en) | Materials comprising carbon-embedded iron nanoparticles, processes for their manufacture, and use as heterogeneous catalysts | |
| Xie et al. | Ceria nanoparticles on modified MXene for aerobic oxidation of 4-methoxybenzyl alcohol | |
| CN111470949A (zh) | 一种环己醇类化合物的合成方法 | |
| CN113797959B (zh) | 一种沸石分子筛包覆金属纳米颗粒催化剂及其制备方法 | |
| WO2025232174A1 (zh) | 负载型催化剂及其制备方法与应用 | |
| CN118616041A (zh) | 负载型贵金属钯加氢催化剂及制备方法和应用 | |
| Gurung | Preparation of nanostructured bimetallic materials with pricisely controlled surface composition and tunable surface morphology by atomic layer electroless deposition: a dissertation in Chemistry and Biochemistry | |
| KR20250060688A (ko) | 불균일계 촉매, 그 제조방법 및 이를 이용하는 선택적 카이랄 화합물의 합성방법 | |
| CN111468122A (zh) | 一种醇类化合物的合成方法 | |
| CN104646024A (zh) | 一种三组份负载型Ni基醇类氧化催化剂的制备方法 | |
| CN111470942A (zh) | 一种醇类化合物的合成方法 | |
| TW201229013A (en) | Manufacturing method of diol compound |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12832108 Country of ref document: EP Kind code of ref document: A1 |
|
| DPE1 | Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101) | ||
| ENP | Entry into the national phase |
Ref document number: 2013533507 Country of ref document: JP Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 14344840 Country of ref document: US |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2012832108 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 20147009262 Country of ref document: KR Kind code of ref document: A |