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WO2008066275A1 - Composites d'hydrotalcite-zéolite et leurs catalyseurs comprenant un procédé pour stocker nox - Google Patents

Composites d'hydrotalcite-zéolite et leurs catalyseurs comprenant un procédé pour stocker nox Download PDF

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Publication number
WO2008066275A1
WO2008066275A1 PCT/KR2007/005810 KR2007005810W WO2008066275A1 WO 2008066275 A1 WO2008066275 A1 WO 2008066275A1 KR 2007005810 W KR2007005810 W KR 2007005810W WO 2008066275 A1 WO2008066275 A1 WO 2008066275A1
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WO
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Prior art keywords
zeolite
hydrotalcite
composite
catalyst
nitrogen oxides
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
Application number
PCT/KR2007/005810
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English (en)
Inventor
Hyun-Sik Han
Gon Seo
Young-San Yoo
Gi-Won Park
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Heesung Catalysts Corp
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Heesung Catalysts Corp
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Publication of WO2008066275A1 publication Critical patent/WO2008066275A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/12—Silica and alumina
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • B01D53/9413—Processes characterised by a specific catalyst
    • B01D53/9422—Processes characterised by a specific catalyst for removing nitrogen oxides by NOx storage or reduction by cyclic switching between lean and rich exhaust gases (LNT, NSC, NSR)
    • 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
    • B01J23/007—Mixed salts
    • 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
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/064—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof containing iron group metals, noble metals or copper
    • B01J29/068—Noble metals
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/08—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the faujasite type, e.g. type X or Y
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/08—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the faujasite type, e.g. type X or Y
    • B01J29/10—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the faujasite type, e.g. type X or Y containing iron group metals, noble metals or copper
    • B01J29/106—Y-type faujasite
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/08—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the faujasite type, e.g. type X or Y
    • B01J29/10—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the faujasite type, e.g. type X or Y containing iron group metals, noble metals or copper
    • B01J29/12—Noble metals
    • B01J29/126—Y-type faujasite
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/18—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the mordenite type
    • B01J29/20—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the mordenite type containing iron group metals, noble metals or copper
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/18—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the mordenite type
    • B01J29/20—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the mordenite type containing iron group metals, noble metals or copper
    • B01J29/22—Noble metals
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
    • 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
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • 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
    • B01J37/10—Heat treatment in the presence of water, e.g. steam
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/78—Compounds containing aluminium, with or without oxygen or hydrogen, and containing two or more other elements
    • C01F7/784—Layered double hydroxide, e.g. comprising nitrate, sulfate or carbonate ions as intercalating anions
    • C01F7/785—Hydrotalcite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/204—Alkaline earth metals
    • B01D2255/2047—Magnesium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/206—Rare earth metals
    • B01D2255/2065—Cerium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20738—Iron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20746—Cobalt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20753—Nickel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20761—Copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/209—Other metals
    • B01D2255/2092—Aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/50—Zeolites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/91—NOx-storage component incorporated in the catalyst
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/01—Engine exhaust gases
    • B01D2258/012—Diesel engines and lean burn gasoline engines
    • 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
    • B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
    • B01J2229/30—After treatment, characterised by the means used
    • B01J2229/42—Addition of matrix or binder particles
    • 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
    • B01J2235/00—Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties
    • B01J2235/30—Scanning electron microscopy; Transmission electron microscopy
    • 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
    • B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
    • C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/03—Particle morphology depicted by an image obtained by SEM
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area

Definitions

  • the present invention relates to a hydrotalcite-zeolite composite comprising
  • hydrotalcite substituted with transition metals a method of producing the
  • oxidizing substances such as oxygen, nitrogen
  • urea serving as a reductant, to exhaust gases to reduce the nitrogen oxides
  • This method is a method of removing nitrogen oxides by
  • Rea-SCR urea-selective catalytic reduction
  • ammonia has strong reducing ability and thus can efficiently reduce
  • urea injection apparatus such as a urea injection apparatus, a hydrolysis reactor, a storage apparatus,
  • a social infrastructure such as a sales network for a urea
  • nitrogen oxides are stored in barium oxide supported in alumina,
  • the injected fuel is decomposed into reducing
  • oxides are removed by the injection of fuel, and thus additional facilities for
  • the performance of an NSR catalyst is primarily evaluated by the amount of the
  • the NSR catalyst must have
  • an automobile purification catalyst contain a large amount of water and are
  • SUBSTITUTE SHEET compounds are formed into sulfur dioxide through a combustion process of fuel
  • barium oxide which is a conventional
  • the amount of nitrogen oxides stored in the catalyst is greatly decreased.
  • the storage materials are less poisoned by sulfur dioxide
  • zeolite-hydrotalcite composite which stores nitrogen oxides in pores thereof or between crystal planes thereof in an oxidation atmosphere without forming a nitrate, and desorbs nitrogen dioxide in a reduction atmosphere. Since the zeolite-hydrotalcite composite is used as a material for storing nitrogen dioxide, it is expected that the breaking of the structure of the zeolite-hydrotalcite composite due to the repeated state change will be prevented, and synergistic effect of using the advantages of two kinds of
  • the surface area of the zeolite-hydrotalcite composite measured using a
  • FIG. 1 is a schematic block diagram showing a process of preparing a zeolite-
  • FIG. 2 is a graph showing an X-ray diffraction pattern of zeolite Y, synthesized
  • FIG. 3 is a graph showing an X-ray diffraction pattern of hydrotalcite
  • FIG. 4 is a graph showing X-ray diffraction patterns of a zeolite Y-hydrotalcite
  • FIG. 5 is scanning electron micrographs of the zeolite Y-hydrotalcite composite
  • FIG. 6 is a graph showing nitrogen dioxide temperature-desorption curves of a
  • the present invention provides a method of producing a zeolite-hydrotalcite
  • composite including: preparing a zeolite stock solution and a hydrotalcite stock
  • the present invention provides the method of producing a zeolite-
  • hydrotalcite composite further including: supporting one or more platinum group
  • the zeolite is ANA zeolite, BEA zeolite, MFI zeolite,
  • MOR zeolite or zeolite Y.
  • the hydrotalcite is substituted with a transition metal
  • the hydrothermal reaction is conducted at a
  • the platinum group metal is supported on the zeolite-
  • hydrotalcite composite such that the amount thereof is 0.1 ⁇ 4.0%.
  • the composite of the present invention includes zeolite and hydrotalcite.
  • zeolite stock a zeolite stock
  • the zeolite stock solution and the hydrotalcite stock solution are mixed and then
  • a zeolite precursor solution and a hydrotalcite precursor solution are provided. Therefore, a zeolite precursor solution and a hydrotalcite precursor solution.
  • FIG. 1 schematically
  • hydrotalcite composite in which zeolite and hydrotalcite are simultaneously
  • an NSR catalyst in order to reduce nitrogen dioxide, desorbed in a reducing atmosphere, an NSR catalyst must be supported with precious metals, such as platinum, palladium, rhodium and the like.
  • the NSR catalyst is supported with the precious metals thorough impregnation, coprecipitation or evaporation, calcined, and then reduced. Through this process, the precious metals are supported on the zeolite-hydrotalcite composite, and thus act as active spots for reducing and removing nitrogen dioxide.
  • barium oxide which is chiefly used as a
  • oxides are stored in the zeolite-hydrotalcite composite in a state in which the
  • nitrogen oxides are coordinated with alkali earth metal ions or transition metal
  • zeolite-hydrotalcite composite has excellent durability.
  • hydrotalcite-zeolite composite is defined in
  • hydrotalcite-zeolite composite catalyst For example, HT-NaY(2.0) is a
  • hydrotalcite-zeolite composite in which Na+-containing zeolite Y is mixed with
  • hydrotalcite at a ratio of 2:1. If the hydrotalcite-zeolite composite is substituted
  • the element symbol of the transition metal is additionally
  • Y stock solution prepared by mixing 8.2 g of silica, 9.4 g of sodium hydroxide,
  • the solid product was washed, filtered, and then dried at a
  • FIG. 2 shows
  • Hydrotalcite for storing and removing nitrogen dioxide, present in exhaust gases
  • the yield of the synthesized hydrotalcite was 87% based on alumina
  • FIG. 3 shows the X-ray diffraction
  • Zeolite Y-hydrotalcite composites were prepared by mixing the zeolite Y stock
  • Example 2 hydrothermally reacting the mixed solution. Specifically,
  • zeolite Y-hydrotalcite composites (HT-NaY(0.5) and HT-NaY(2.0)
  • FIG. 4 shows X-ray
  • hydrotalcite appeared at diffraction angles of 1 L7°and 23.2°and diffraction
  • FIG. 5 shows the shapes of the prepared zeolite Y-hydrotalcite composites
  • hydrotalcite (Example 2) is much smaller than that of the zeolite Y (Example 1 ).
  • BET Brunauer-Emmett-Telle
  • zeolite Y-hydrotalcite composites is a composite of zeolite Y and hydrotalcite.
  • NaY(LO) composite was calcined in an electric furnace at a temperature of
  • zeolite Y composite was measured using a weight type adsorber.
  • An analcime zeolite-hydrotalcite composite was prepared using an analcime
  • zeolite stock solution a hydrotalcite stock solution was prepared using
  • hydrotalcite appeared weak at diffraction angles of 11.7°, 23.2°, 34.8°and
  • hydrotalcite composite has micropores, each of which is formed of a ring of
  • a mordenite zeolite-hydrotalcite composite was prepared by mixing a mordenite

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Geology (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

L'invention concerne un matériau composite d'hydrotalcite-zéolite comprenant de la zéolite échangée avec des ions métalliques alcali ou des ions de métaux terreux alcali et de l'hydrotalcite substituée par des métaux de transition, et un catalyseur destiné à stocker des oxydes d'azote produits au moyen du matériau composite. Le catalyseur permettant le stockage d'oxydes d'azote peut stocker une grande quantité d'oxydes d'azote et présente une stabilité thermique et mécanique excellente et une excellente résistance à l'empoisonnement au dioxyde de soufre.
PCT/KR2007/005810 2006-11-29 2007-11-19 Composites d'hydrotalcite-zéolite et leurs catalyseurs comprenant un procédé pour stocker nox Ceased WO2008066275A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020060118939A KR100827788B1 (ko) 2006-11-29 2006-11-29 하이드로탈사이트-제올라이트 복합체 및 이를 이용한 질소산화물 흡장형 촉매
KR10-2006-0118939 2006-11-29

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WO2008066275A1 true WO2008066275A1 (fr) 2008-06-05

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2341637A1 (es) * 2008-12-22 2010-06-23 Consejo Superior De Investigaciones Cientificas (Csic) Materiales composites micro- y nano-estructurados basados en hidroxidos dobles laminares de tipo hidrotalcita y silicatos de la famili de las arcillas.
GB2483801A (en) * 2010-09-17 2012-03-21 Magnesium Elektron Ltd Synthetic hydrotalcite
CN102049262B (zh) * 2009-10-28 2013-01-02 中国石油化工股份有限公司 一种清洁型co耐硫变换催化剂的制备方法
JP2016107262A (ja) * 2014-11-27 2016-06-20 国立大学法人佐賀大学 エンドトキシン及び／又はサイトカインの吸着体及びその製造方法、これを配合した皮膚外用製剤及び経口投与用製剤、並びにエンドトキシン及び／又はサイトカインの吸着除去方法
JP2016120488A (ja) * 2014-12-24 2016-07-07 国立大学法人佐賀大学 有害気相物質の除去のための吸着体及びその製造方法、有害気相物質除去材、並びに有害気相物質の除去方法
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CN109833860A (zh) * 2017-11-28 2019-06-04 中国石油天然气股份有限公司 一种硅胶载体的制备方法
CN109833861A (zh) * 2017-11-28 2019-06-04 中国石油天然气股份有限公司 硅胶载体的改性制备方法
CN114768754A (zh) * 2022-04-29 2022-07-22 福州城建设计研究院有限公司 一种吸附选择性的Mg/Al层状双金属氢氧化物成型吸附颗粒的制备、再生方法和应用
CN115845907A (zh) * 2022-12-16 2023-03-28 四川大学 一种低温scr催化剂及其制备方法和应用

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* Cited by examiner, † Cited by third party
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KR101011830B1 (ko) 2009-09-30 2011-01-31 상명대학교 산학협력단 질소산화물 분해용 혼합금속산화물 촉매
CN109833917B (zh) * 2017-11-28 2022-02-01 中国石油天然气股份有限公司 一种催化剂负载用硅胶载体的制备方法
CN113713838B (zh) * 2021-11-04 2022-01-04 中汽研（天津）汽车工程研究院有限公司 一种柴油车用整体式氧化型催化剂的制备方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05329374A (ja) * 1992-06-01 1993-12-14 Nissei Kagaku Kogyosho:Kk アルキルフェノール類の製造用触媒とアルキルフェノール類の製造方法
US5393722A (en) * 1993-08-20 1995-02-28 Uop Hydrothermally stable metal oxide solid solutions
US6010619A (en) * 1997-01-22 2000-01-04 Greenvue Company, Llc FCC process with zeolite and hydrotalcite
US6403852B1 (en) * 1996-12-25 2002-06-11 Sumitomo Chemical Co., Limited Process for producing alkenyl-substituted aromatic hydrocarbons

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100416787B1 (ko) * 2001-03-21 2004-01-31 코스모산업 주식회사 염화물 및 황화물 제거용 흡착제
KR101169481B1 (ko) * 2004-03-16 2012-07-27 니폰 고쿠도 가이하츠 가부시키가이샤 하이드로탈사이트형 물질 및 그 제조 방법, 및 유해 물질의고정화 방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05329374A (ja) * 1992-06-01 1993-12-14 Nissei Kagaku Kogyosho:Kk アルキルフェノール類の製造用触媒とアルキルフェノール類の製造方法
US5393722A (en) * 1993-08-20 1995-02-28 Uop Hydrothermally stable metal oxide solid solutions
US6403852B1 (en) * 1996-12-25 2002-06-11 Sumitomo Chemical Co., Limited Process for producing alkenyl-substituted aromatic hydrocarbons
US6010619A (en) * 1997-01-22 2000-01-04 Greenvue Company, Llc FCC process with zeolite and hydrotalcite

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ES2341637A1 (es) * 2008-12-22 2010-06-23 Consejo Superior De Investigaciones Cientificas (Csic) Materiales composites micro- y nano-estructurados basados en hidroxidos dobles laminares de tipo hidrotalcita y silicatos de la famili de las arcillas.
WO2010072870A1 (fr) 2008-12-22 2010-07-01 Consejo Superior De Investigaciones Científicas (Csic) Matériaux composites microstructurés ou nanostructurés à base d'hydroxydes doubles lamellaires de type hydrotalcite et de silicates de la famille des argiles
ES2341637B1 (es) * 2008-12-22 2011-05-23 Consejo Superior De Investigaciones Cientificas (Csic) Materiales composites micro- y nano-estructurados basados en hidroxidos dobles laminares de tipo hidrotalcita y silicatos de la familia de las arcillas.
CN102049262B (zh) * 2009-10-28 2013-01-02 中国石油化工股份有限公司 一种清洁型co耐硫变换催化剂的制备方法
GB2483801A (en) * 2010-09-17 2012-03-21 Magnesium Elektron Ltd Synthetic hydrotalcite
GB2483801B (en) * 2010-09-17 2017-06-14 Magnesium Elektron Ltd Hydrotalcite-containing compositions for CO2 capture
JP2016107262A (ja) * 2014-11-27 2016-06-20 国立大学法人佐賀大学 エンドトキシン及び／又はサイトカインの吸着体及びその製造方法、これを配合した皮膚外用製剤及び経口投与用製剤、並びにエンドトキシン及び／又はサイトカインの吸着除去方法
JP2016120488A (ja) * 2014-12-24 2016-07-07 国立大学法人佐賀大学 有害気相物質の除去のための吸着体及びその製造方法、有害気相物質除去材、並びに有害気相物質の除去方法
CN109833857A (zh) * 2017-11-28 2019-06-04 中国石油天然气股份有限公司 一种烯烃催化用载体硅胶的制备方法
CN109833860A (zh) * 2017-11-28 2019-06-04 中国石油天然气股份有限公司 一种硅胶载体的制备方法
CN109833861A (zh) * 2017-11-28 2019-06-04 中国石油天然气股份有限公司 硅胶载体的改性制备方法
CN109833857B (zh) * 2017-11-28 2022-01-04 中国石油天然气股份有限公司 一种烯烃催化用载体硅胶的制备方法
CN109833860B (zh) * 2017-11-28 2022-01-04 中国石油天然气股份有限公司 一种硅胶载体的制备方法
CN109833861B (zh) * 2017-11-28 2022-01-04 中国石油天然气股份有限公司 硅胶载体的改性制备方法
CN114768754A (zh) * 2022-04-29 2022-07-22 福州城建设计研究院有限公司 一种吸附选择性的Mg/Al层状双金属氢氧化物成型吸附颗粒的制备、再生方法和应用
CN114768754B (zh) * 2022-04-29 2024-05-14 福州城建设计研究院有限公司 一种吸附选择性的Mg/Al层状双金属氢氧化物成型吸附颗粒的制备、再生方法和应用
CN115845907A (zh) * 2022-12-16 2023-03-28 四川大学 一种低温scr催化剂及其制备方法和应用

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