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WO2008018617A1 - Filtre à cigarette - Google Patents

Filtre à cigarette Download PDF

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Publication number
WO2008018617A1
WO2008018617A1 PCT/JP2007/065876 JP2007065876W WO2008018617A1 WO 2008018617 A1 WO2008018617 A1 WO 2008018617A1 JP 2007065876 W JP2007065876 W JP 2007065876W WO 2008018617 A1 WO2008018617 A1 WO 2008018617A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
catalyst
cigarette
catalyst component
carbon monoxide
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/JP2007/065876
Other languages
English (en)
Japanese (ja)
Inventor
Hiroki Taniguchi
Nobuyuki Ohji
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daicel Corp
Original Assignee
Daicel Chemical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daicel Chemical Industries Ltd filed Critical Daicel Chemical Industries Ltd
Publication of WO2008018617A1 publication Critical patent/WO2008018617A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
    • B01J23/8906—Iron and noble metals
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
    • 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
    • B01J23/48—Silver or gold
    • B01J23/52—Gold
    • 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
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/063—Titanium; Oxides or hydroxides thereof
    • 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
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/08—Silica
    • 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
    • B01J21/18—Carbon
    • 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
    • B01J35/19—Catalysts containing parts with different compositions

Definitions

  • the present invention relates to a cigarette smoke filter that can reduce the amount of carbon monoxide inflow into the mouth of a smoker and reduce adverse effects on the health of the smoker, and a method for producing the same.
  • Patent Document 1 As a method for removing carbon oxide, Japanese Patent Laid-Open No. 60-216843 (Patent Document 1) describes the use of a catalyst in which platinum or palladium is supported on the surface of aluminum oxide particles to monoxide in cigarette smoke. A method for removing carbon by oxidizing it to carbon dioxide has been proposed. This catalyst develops its ability to oxidize carbon monoxide when relatively high-temperature cigarette smoke comes into contact with the catalyst, but its ability to oxidize carbon monoxide decreases near room temperature, and the monoxide is oxidized. It is difficult to remove carbon efficiently. In addition, the ability to remove carbon monoxide and carbon greatly depends on the external environment during smoking, especially the outside temperature.
  • JP-A-60-28823 uses a cigarette holder filled with catalyst powder in which palladium fine particles are supported on manganic acid soot, and carbon monoxide in cigarette smoke is reduced to carbon dioxide.
  • a method of oxidizing and removing to carbon is disclosed. This method has a relatively high ability to oxidize carbon monoxide and carbon even at room temperature.
  • this prior document describes that it can be used for reducing CO in cigarette smoke used for filling filters and cigarette holders.
  • the taste of tobacco may be impaired.
  • JP-A-9-140370 discloses that carbon monoxide in cigarette smoke is oxidized and removed to carbon dioxide using a catalyst in which gold fine particles are supported on a transition metal oxide support. A method to do this has been proposed.
  • this catalyst has a relatively high oxidizing ability for carbon monoxide CO, the catalyst powder is likely to become very fine, so when added to a cigarette smoke filter or leaf tobacco, the ventilation resistance becomes too large or added. When you do, the suitability for operation and the yield are not necessarily good.
  • Patent Document 4 discloses a technique in which a porous material carrying a catalyst component is added to an element (leaf tobacco or tobacco smoke filter) constituting tobacco.
  • the catalyst component is composed of a metal compound (transition metal oxides such as iron oxide, cobalt oxide and nickel oxide) and a gold catalyst (gold fine particles having an average particle size of 0.1 to 10 nm). It is described that the proportion of gold atoms is about 0.:! To 15% with respect to the entire metal component of the catalyst component. Further, it is described that the supported amount of the catalyst component is 1% by weight or more with respect to the porous body (activated carbon, silica gel, alumina, etc.). It is also described that cigarettes (cigarettes) are made up of a leaf tobacco part and a cigarette smoke filter attached to the leaf tobacco part. In this technique, it is described that the porous material includes activated carbon, silica gel, and alumina force.
  • the suitability for operation and the yield when added are improved, and the ventilation resistance does not become too high.
  • the carbon monoxide reduction amount is lower than that of Patent Document 3, and the carbon monoxide diverging amount is 0.6 even in the most excellent embodiment described in the examples. This is 35% in terms of carbon monoxide removal rate.
  • Ventilation resistance has a strong impact on tobacco smoking, and carbon monoxide should be removed as much as possible for smokers' health. There was no cigarette finoleta with low airflow resistance and high carbon monoxide removal performance.
  • Patent Document 1 JP-A-60-216843 (Claims)
  • Patent Document 2 JP-A-60-28823 (Claims)
  • Patent Document 3 JP-A-9-140370 (Claims)
  • Patent Document 4 JP-A-11-235169 (Abstract, Claims, Examples)
  • the present invention provides a cigarette filter that can effectively remove carbon monoxide in cigarette smoke and has a quick change in ventilation resistance.
  • the present invention has been completed by finding that a cigarette filter having a structure comprising a support made of a material can efficiently remove carbonic acid carbon and does not impair ventilation resistance.
  • the catalyst component is composed of a metal compound and a gold catalyst.
  • the carrier made of a porous material carrying the catalyst component disposed in the middle part of the tobacco filter of the present invention may be a particulate component. Further, both end portions constituting the cigarette filter may be a normal filter material.
  • the airflow resistance value at both ends may be large relative to the airflow resistance value at the intermediate part.
  • the present invention may have a structure in which filter rods containing cellulose ester fibers are arranged at both ends.
  • the porous body is at least one selected from live raw charcoal, silica gel, and alumina, At least one metal compound (or support) selected from iron oxide, titanium oxide, cobalt oxide and nickel oxide, and a gold catalyst supported on this metal compound (or support) Good.
  • the metal compound may be an oxide.
  • the metal compound may be iron iron or titanium oxide.
  • the combination of a metal compound and a porous material is that the metal compound is iron oxide and the porous material is active.
  • the charcoal or the metal compound may be acid nickel and the porous body may be silicagenole.
  • the carrier carrying the catalyst component may include at least a carrier carrying the catalyst component on activated carbon.
  • the porous body carrying the catalyst component may be a mixture of a carrier carrying the catalyst component on activated carbon and a carrier carrying the catalyst component on silica gel.
  • FIG. 1 is a sectional view of a cigarette using the cigarette filter of the present invention.
  • the part indicated by number 1 is the tobacco leaf part.
  • the part indicated by number 2 is a cigarette paper.
  • the number 5 part consisting of the number 3 and number 4 parts is the Ryoaki tobacco filter.
  • the part indicated by the number 3 is “both ends”.
  • the part indicated by the number 4 is an “intermediate part”.
  • FIG. 2 is a partial perspective view of a cigarette provided with the cigarette filter of the present invention.
  • the part indicated by number 1 is the tobacco leaf.
  • the part indicated by number 2 is a cigarette paper.
  • the part indicated by the number 3 is “both ends”.
  • the part indicated by the number 4 is an “intermediate part”.
  • the cigarette filter of the present invention is characterized by comprising at least three partial forces. That is, the cigarette filter has a structure in which at least both end portions and an intermediate portion have three member forces, and the carrier of the present invention is disposed in the intermediate portion (that is, the central portion).
  • Figure 1 shows a cross-sectional view of the tobacco filter of the present invention.
  • Figure 1 1 The right side of the figure (on the side opposite to the tobacco leaf side) corresponds to the tobacco outlet side.
  • a cigarette filter is formed by aligning filter tows and curling the filter rod fixed with a plasticizer such as triacetin with a wrapping paper.
  • a plasticizer such as triacetin with a wrapping paper.
  • Fig. 1! /, 1 is equivalent to the tobacco leaf part.
  • a cigarette filter hitting the mouthpiece is joined to the tip of the tobacco leaf.
  • the cigarette filter of the present invention is composed of three parts as shown in FIG.
  • portions formed by filter rods are arranged at both ends, and a filter is formed at the center. It takes a structure in which the carrier of the present invention is arranged on the tarod.
  • the part formed by the filter rod at the end corresponds to the part shown as 3 both ends in Figure-1.
  • the middle part of 4 shown in Fig. 1 is placed at the center of both ends of 3 in Fig. 1.
  • the present invention is characterized in that a support made of a porous material supporting a catalyst component is disposed in a portion shown as an intermediate portion
  • FIG. 12 shows a partial perspective view of a cigarette provided with the cigarette filter of the present invention.
  • a granular carrier may be disposed in the middle part.
  • the granular material is sandwiched and fixed between both ends formed by filter rods in the intermediate portion in the present invention.
  • the diameter of the cigarette filter of the present invention is preferably the same as that of the conventional cigarette filter, and a diameter of 14 to 25 mm can be used.
  • the airflow resistance value at both ends is set higher than the airflow resistance value of the intermediate part filled with the carrier.
  • the reason why the cigarette filter can be obtained clearly has a low ventilation resistance and a high carbon monoxide removal performance.
  • a cigarette filter with low ventilation resistance and high carbon monoxide removal performance can be obtained.
  • the ventilation resistance is high, that is, if the pressure loss when the gas passes is high, the oxidation time by the catalyst is sufficient, but if the ventilation resistance is low, it is sufficient. Since the catalyst reaction time cannot be obtained, the carbon monoxide removal performance may be reduced. On the other hand, if there is a difference in the airflow resistance value between the both end portions and the intermediate portion as in the present invention, there is a possibility that the reaction time of the catalyst can be obtained.
  • the porous body carrying the catalyst is used. Since the (support) is not dispersed in the cellulose acetate fiber, the adsorption and desorption force of the carbon monoxide of the cellulose acetate fiber results in only the adsorption and desorption of carbon monoxide by the porous material. Even when the catalyst is supported on the carbonaceous material, there is a possibility that the performance of the catalyst is not lowered and the carbon monoxide removal performance is maintained.
  • the catalyst component is dispersed in the cellulose acetate fiber and the case where the catalyst component supported on the porous body is dispersed in the cellulose acetate fiber.
  • the catalytic performance may be reduced.
  • the porous material and the cellulose cellulose acetate fiber interact with each other. It is possible to estimate that the catalytic activity does not decrease because the action is inhibited.
  • the catalyst support (porous material or cellulose acetate fiber) must be exposed to space in order to obtain the oxygen necessary to acidify the carbon monoxide and carbon.
  • Strength When the catalyst supported on the porous material is dispersed in cellulose acetate fiber, the required space is reduced and the catalyst performance is lowered.
  • the structure as in the present invention it can be estimated that a sufficient space is obtained around the porous body, so that a decrease in the activity of the catalyst is suppressed.
  • the adsorption effect of the substance which poisons the catalyst in tobacco smoke can be considered.
  • the porous material is dispersed in the cellulose acetate fiber, there is a poisonous substance in which the poisonous substance is not sufficiently trapped in the cellulose acetate fiber.
  • the poisonous substance is adsorbed while passing through the cellulose acetate fiber, and the degree of poisoning of the catalyst is reduced, that is, the poisonous substance adsorption effect of the cell mouth acetate fiber may be functioning effectively. It is possible.
  • the intermediate portion is a void portion surrounded by both ends and the wrapping paper, and a carrier of this invention is disposed here.
  • the carrier of the present invention is powdery or granular, and particularly preferably, the particle size passes through 10 mesh and passes through 70 mesh, and the content in the range (10 mepass 70 mesh on) is 90% by weight or more. It is a granular material.
  • the length of the intermediate portion (the length in the axial direction of the cigarette) can be adjusted as appropriate according to the filling amount of the carrier. If the length is about 3 mm and about 15 mm, 5 mm is more preferably about 10 mm.
  • both ends and other tobacco filter parts may be provided.
  • the cigarette filter can be configured such that the suction side is configured with two partial forces, and the intermediate portion and the end are configured with four partial forces.
  • the filling rate in the intermediate part is not particularly limited as long as the filling rate is such that the carrier is not compressed. If the filling rate becomes too high, the ventilation resistance value becomes higher than both ends, and this form is not preferable. Furthermore, as for the filling state of the intermediate part, the filling amount of the intermediate part is lowered, the gap is intentionally provided, and the intermediate part is allowed to move by shaking.
  • both ends constituting the cigarette smoke filter of the present invention include the following four points.
  • the porous material carrying the catalyst is held inside the cigarette smoke filter without using a plasticizer (adhesive) such as triacetin to maintain the structure of the cigarette smoke filter and attach it to the cigarette.
  • a plasticizer adheresive
  • triacetin to maintain the structure of the cigarette smoke filter and attach it to the cigarette.
  • the fourth is to prevent smokers from inhaling a catalyst or a porous material (support) carrying a catalyst without using a plasticizer (adhesive) such as triacetin. That is, in the case of adopting the configuration of the present invention, it is fixed to the material constituting the filter lot with triacetin or an adhesive, but there are both ends on the suction port side. Both ends on the mouth side can prevent the carrier from being sucked into the mouth of the smoker.
  • a plasticizer adheresive
  • the length of both ends (the axial length of the tobacco smoke filter) is 2 to 15 mm, preferably 3 mm as the both ends on the tobacco leaf side. It is 12 mm, more preferably 5 mm to 10 mm. If the length of both ends on the tobacco leaf side is short, the ability to remove poisonous substances in tobacco smoke may not be sufficient, which may reduce the activity of the catalyst and impair the function of encapsulating the catalyst. Cases can arise.
  • the length of both ends on the mouthpiece side is 5 to 25 mm, more preferably 7 to 23 mm, more preferably 10 mm, 20 mm, and particularly preferably 12 to 18 mm. If the length of both ends on the mouth side is short, the filter hardness may be insufficient, which may impair the feeling of smoking. Becomes larger.
  • 15 mm force is 35, preferably 17 mm to 30 mm, more preferably 20 mm to 27 mm.
  • one or more vent holes may be provided at both ends on the tobacco leaf side and both ends on the suction mouth side as necessary.
  • both ends constituting the cigarette smoke filter of the present invention
  • materials for both ends are used. That is, the material of both ends is a conventional filter material such as cellulose (wood fiber and linter pulp which may be fibrinized), regenerated cellulose (viscose rayon. Copper ammonia rayon etc.), cellulose ester, synthetic high It can be composed of fibers and granules such as molecules (polyester, polyurethane, polyamide, polyethylene, polypropylene, etc.). These fibers and powders can be used alone or in combination of two or more.
  • the filter material must have a ventilation resistance and density within the range that does not impair the filter characteristics, for example, a filter with a length of 10 cm and a straight defect of 7.8 mm, with a ventilation resistance of 200 to 600 mm WG (water gauge), preferably about 300 to 500 mm WG. There is density. 20 to 0.50 gZcm2, preferably. It is often about 25 to 0.45 g / cm 2 (for example, 0.30 to 0.45 g / cm 2).
  • Preferred filter materials include cellulose fibers and / or cellulose ester fibers, and at least cellulose ester fibers are often included to improve the taste.
  • cellulose ester fibers include organic acid esters such as cellulose acetate, cellulose propionate, and cellulose butyrate (for example, esters with organic acids having about 2 to 4 carbon atoms); cellulose acetate propionate, and cellulose acetate petite.
  • mixed ester esters such as cellulose ester derivatives such as polycaprolactone grafted cellulose esters. These cellulose ester fibers can also be used alone or in admixture of two or more.
  • the average degree of polymerization (viscosity average degree of polymerization) of the cellulose ester can be selected, for example, from the range of about 50 to 900, preferably about 200 to 800, and the average degree of substitution of the cellulose ester is, for example, 1.5 to 3.0. You can choose from a range of degrees.
  • Preferred cellulose esters include, for example, cellulose acetate, cellulose propionate, cellulose petitate, cellulose acetate propionate, cellulose acetate propylate, especially cellulose acetate.
  • the both end portions can be formed by a known filter forming method.
  • a papermaking structure filter or a filter molded with a foam can be used.
  • the most preferred structure is a toe-structured filter rod.
  • both ends of the tobacco leaf side and the both ends of the suction mouth of the present invention may be divided into two parts as required.
  • the both ends of the tobacco leaf side may have a single structure
  • both ends of the suction mouth side may have a two-part structure
  • a charcoal filter may be disposed at a portion corresponding to the middle of both ends and the suction mouth. Nare ,.
  • the both ends of the mouthpiece side are divided into two parts, and the middle part between both ends and the suction mouth.
  • a filter rod having a tow structure in which the plasticizer is used and a catalyst or a carrier is spread may be disposed.
  • the tow-structure filter rod is a tow formed by bundling single fibers (filaments) of, for example, about 3,000 to 1,000,000, preferably about 5,000 to 100,000 cellulose ester fibers. Fiber bundle).
  • the cross-sectional shape of the fiber is not particularly limited. There may be.
  • the fiber diameter and fiber length can be selected according to the type of fiber. For example, the fiber diameter is 0.01 to: I00 / im, preferably about 0.1 to 50 ⁇ , the fiber length is 50 ⁇ m to 5 cm, A range force of preferably 100 ⁇ m to 3 cm 3 degrees is also often selected.
  • the fineness of the cellulose ester can be selected in the range of 1 to 16 denier, preferably 1 to about 10 denier.
  • the fibers such as cellulose ester fibers may be non-crimped fibers or crimped fibers. It is particularly preferable to use crimp » ⁇ .
  • the filter material may contain a conventional binder component in order to make the filter rods exhibit appropriate hardness.
  • the binder component includes plasticizers (such as triacetin), resins (water-soluble or water-insoluble polymers selected from natural, semi-synthetic, and synthetic polymers), Polysaccharides such as starch and starch derivatives can be used, and the resin can be used in a liquid or semi-solid form such as a solution or dispersion, a solid form such as a granular or fibrous form, or a molten form.
  • the porous body for supporting the catalyst component to be added to the tobacco element is not particularly limited as long as it effectively exhibits the activity of the catalyst component and can improve the operability and yield of the addition to the tobacco element. It is a porous material such as activated carbon, silica gel, alumina, zeolite, silica, silica-alumina, nickel-alumina, etc. A porous material that is not powdery is preferred. These porous bodies can be used alone or in admixture of two or more.
  • the specific surface area of the porous body, the catalyst components can be selected a wide range forces can effectively carry, for example, 100 ⁇ 4000m 2 g s preferably 300 ⁇ 3000m 2 / g (e.g. 400 ⁇ 2000m 2 / g) in the range of about Force can be selected.
  • the particle size of the porous body is 90% by weight or more, for example, 10 mesh pass 70 mesh on, preferably 10 mesh pass 50 mesh on, particularly preferably 10 mesh pass 32 mesh on, more preferably 14 mesh pass 25 Mesh on.
  • the particulate matter is a particulate matter having a particle size in a range that passes through 10 mesh and does not pass through 70 mesh (10 mesh, 70 mesh on). Such a granular material can lower the ventilation resistance value, and can further exert the effect of the present invention.
  • Preferred porous materials include activated carbon and silica gel strength S.
  • the activated carbon of the present invention includes various activated carbons such as fruit shell charcoal such as coconut shell and talmi husk, plant activated carbon such as charcoal, high polymer such as phenol resin, rayon, polyvinylidene chloride, acrylic resin and cellulose. And mineral activated carbon using mineral raw materials such as synthetic resin or polymer activated carbon, lignite, lecite, anthracite, coke, coal or petroleum pitch. One or more of these activated carbons can be used. Of these activated carbons, plant activated carbon such as coconut shell activated carbon is often used.
  • non-volatile chemicals for example, acid components such as organic acids or inorganic acids, base components such as organic bases or inorganic bases, are used to enhance the selective removal properties against harmful components as necessary. May be carried.
  • the activated carbon in the present invention may be fibrous, but is often used in a granular form.
  • a granular material may be a granulated material granulated using a binder, such as granulated activated carbon.
  • Specific surface area of the activated carbon for example, 200 ⁇ 4000M 2 preferably 300 ⁇ 3000 m 2 g, more preferably about 500-250 Om 2 Zg, may be selected from the 1000 ⁇ 2000m 2 / g.
  • the average particle size of the silica gel of the present invention can be appropriately selected depending on the application. For example, 90% by weight or more is 10 mesh pass 70 mesh on, preferably 10 mesh pass 50 mesh on, particularly preferably 10 mesh pass 32 mesh on. More preferably, 14 mesh pass and 25 mesh on may be used.
  • the average pore diameter (average pore diameter) of the silica gel is, for example, 0.5 to: I000 nm, preferably:! To 800 nm, more preferably about 3 to 600 nm.
  • a relatively large average pore diameter for example, an average pore diameter of 20 nm or more (for example, about 20 to 90 Onm), preferably 25 nm or more (for example, about 25 to 700 nm), more preferably 30 nm or more ( For example, it may be about 35 to 650 nm), particularly 40 nm or more (for example, about 45 to 600 nm), usually 20 to 500 nm (for example, 25 to 400 nm, preferably about 30 to 350 nm).
  • silica gel having a relatively small pore diameter is often used for adsorption of gas or the like.
  • the use of silica gel having a large pore diameter makes it possible to further improve carbon monoxide removability in combination with the catalyst component.
  • the specific surface area of silica gel is, for example, 0. 5 m 2 / g or more (e.g., about l ⁇ 1200m 2 / g), preferably 1. 5 m 2 / g or more (e.g., 2 ⁇ 1000m 2 / g About 5 ⁇ 2 ⁇ (for example, about 6 to 800 m 2 Zg), usually 3 to 300 m 2 Zg (for example, 4 to 200 m 2 Zg, preferably 5 to: 150 m 2 More preferably 6 to: L00m 2 / g, especially about 7 to 80m 2 / g).
  • the average pore volume of the silica gel may be, for example, about 0.1 to 2 mL / g, preferably about 0.3 to I. 8 mL / g, and more preferably about 0.5 to about 1.5 mLZg. .
  • the equilibrium moisture content of silica gel at a temperature of 22 ° C and 60% RH is, for example, 0. It may be about 01 to 50%, preferably about 0.1 to 30%.
  • the equilibrium moisture content power at a temperature of 22 ° C. and 60% RH for example, 0.01 to 10% (for example, 0.03 to 8%), preferably 0.05 to 7% (eg, E.g., 0.18-5%), more preferably 0.1-3% (e.g., 0.15-2.5%), especially 0.5-2%,
  • about 0.01 to 5% silica gel is preferably used.
  • the catalyst component added to the tobacco element is composed of a metal compound and a gold catalyst, and the catalyst component is a coprecipitate (or coexisting substance) of the metal compound and the gold catalyst, and a carrier composed of the metal compound.
  • the catalyst component may be composed of a gold catalyst as a catalytically active component carried on this carrier.
  • Gold catalysts are often dispersed in the form of fine particles and coprecipitated (coexisting) or supported.
  • Examples of the metal compound constituting the catalytically active component include various metal compounds, for example, oxides, carbonates, bicarbonates, etc., as long as the activity of the gold catalyst is effectively expressed, such as oxides of transition metals. It is preferable. Transition metal oxides include, for example, Sc, Y, lanthanoid metals and actinoid metals, etc. Periodic Table 3 Group X metals, Ti, Zr, etc. Periodic Table 4A metals, V, etc.
  • a preferred metal compound is a compound that has nonflammability that can maintain a solid state even during smoking or after smoking, and does not generate harmful components by smoking.
  • Particularly preferred metal compounds include Group 8 metals of the periodic table (eg, iron, cobalt, nickel, etc.) or oxides of titanium.
  • the metal compound is supported on the porous body in the form of fine particles supporting a gold catalyst.
  • the particle size of the gold catalyst (particularly gold fine particles) constituting the catalyst component can be selected within a range where the catalytic activity can be effectively expressed, for example, a range force of about 30 nm from the size of the gold atom.
  • the particle size of the gold fine particles is, for example, 30 nm or less (for example, about 0.5 to 30 nm), preferably 20 nm or less (for example, 1 to 20 nm), and more preferably:! To 1 Onm (for example, 1 to 5 nm) There are many cases where it is about.
  • the amount of the catalytically active component used is within the range in which the activity of the gold catalyst is expressed, for example, the amount of gold atoms is 0.1. -: 15%, preferably 1-: 10%, more preferably about 2-8% (for example, 3-6%). If the amount of gold atoms (supported amount) is less than 0.1%, carbon monoxide has a small oxidative removal ability, and even if it exceeds 15%, gold atoms may be too close together and aggregate to form coarse particles. In many cases, the carbon monoxide removal ability is not so improved. [0041]
  • the gold catalyst is preferably supported in a finely divided and uniformly dispersed state on a catalyst carrier composed of a metal compound.
  • the amount of gold atoms (supported amount) “%” means the ratio of gold atoms to the total metal components of the catalyst component, and can be calculated as follows.
  • the metal components include carbon. It is. ,
  • the catalyst component is composed of ⁇ moles of metal oxide Fe2 03 compound (support etc.) and gold m (g) held or supported on this metal compound (support etc.) [Ie Au m (g) / (n X Fe2 03)]
  • the ratio of the catalyst component to the porous body can be selected within a range power that can effectively exhibit the catalytic activity, and for example, 1% by weight or more (for example, 1 to 50% by weight), preferably 3% by weight or more (for example, 3 to 25%). % By weight), more preferably 5% by weight or more (for example, 5 to 20% by weight). If the ratio of the catalyst component to the porous material is less than 1% by weight, the carbon monoxide removal ability is not sufficient.
  • the porous body and the catalyst component may contain an additive such as a dispersant which may be surface-treated with a dispersant or the like.
  • surface treatment such as oxidation treatment may be applied to metal compounds (supports, etc.).
  • the amount of the porous material carrying the catalyst component to the cigarette filter can be selected according to the type of catalyst component and usage, and is 1 to 500 parts by weight, preferably 5 to 100 parts by weight for the filter material. About 200 parts by weight (for example, 10 to 100 parts by weight). If the amount of the porous material carrying the catalyst component is small, the removal efficiency for carbon monoxide in the tobacco smoke is lowered, and if it is too much, the taste and the lifting workability of the filter may be impaired.
  • the support of the catalyst component on the porous body is not particularly limited as long as the catalyst component can be effectively supported on the porous body.
  • chlorauric acid HuC14
  • a metal corresponding to the metal oxide can be supported.
  • Inorganic acid salt A porous material is added to and suspended in a mixed aqueous solution (nitrate, etc.), and the suspension is added to an aqueous solution of an inorganic base such as alkali metal carbonate (sodium carbonate).
  • the porous body on which the catalyst component is supported can be washed with water, dried, and then fired.
  • a mixed aqueous solution of chloroauric acid and a metal inorganic acid salt corresponding to a metal oxide is added to an aqueous solution of an inorganic base in which a porous body is suspended in advance, and a catalyst is formed on the porous surface.
  • a method may be employed in which the components are coprecipitated and supported, and then the porous material on which the catalyst component is supported is washed with water, dried, and then fired in air.
  • the porous body may be loaded with one component of the metal compound and the gold catalyst and then loaded with the other component.
  • gold (ultra) fine particles are often supported by co-precipitation or precipitation (or deposition) on the surface of the porous body and then firing. Les.
  • the catalyst component supported on the L-form shows catalytic activity (oxidation activity) against carbon monoxide even at around room temperature.
  • the carbon monoxide removal capability can be further enhanced when the porous body has a structure consisting of a mixture of a support having a catalyst component supported on activated carbon and a support having a catalyst component supported on silica gel.
  • a mixture of a catalyst component in which gold fine particles are supported on iron oxide using activated carbon as a support and a catalyst component in which gold particles are supported on titanium oxide as a silica gel support is further removed. Performance can be improved.
  • a carrier made of a porous material carrying a catalyst component in the middle may be mixed with another adsorbent.
  • a porous body not supporting a catalyst component can be suitably used as the adsorbent to be mixed.
  • Tobacco resistance of the above tobacco [Peace Light Box (Registered Trademark No. 2122839) (made by Japan Tobacco Sangyo Co., Ltd.)] and cigarette samples made using the same And measured.
  • the airflow resistance was measured by using an automatic airflow resistance measuring instrument (Filtona, FTS300) when a pressure loss (mmWG) was passed through the cigarette sample at a flow rate of 17.5 mlZ seconds.
  • a cigarette sample was attached to a piston-type constant-volume automatic smoker (single type manufactured by Boulder Wald), smoked at a flow rate of 17.5 ml / second, smoking time 2 seconds Z times, and smoking frequency 1 time.
  • the mainstream smoke from the first to seventh smoking was collected in a bag, and the carbon monoxide concentration was analyzed with a CO / C02 analyzer (CO / C02-Analyser C-24 manufactured by Boulder Wald). From this analysis result, the amount of carbon monoxide contained in the mainstream smoke from the 1st to the 7th was calculated and used as the amount of carbon monoxide per cigarette sample.
  • the 9 mm space created by this glass tube was filled with 20 Omg of the activated carbon.
  • the glass tube was plugged using the previously cut short piece, that is, the 14 mm filter part (llOmg). Sealing tape was also applied to the connection between the glass tube and the filter to seal it. Accordingly, the filter length of the cellulose diacetate crimped fiber tow is 25 mm.
  • the extended 9 mm portion between the filters was filled with activated carbon particles. The charged amount of activated carbon particles was 200 mg per cigarette.
  • the cigarette sample was measured for the ventilation resistance and the amount of carbon monoxide. And the obtained carbon monoxide removal rate was computed by the said formula. The results are shown in Table 1.
  • a target product for evaluating the carbon monoxide removal rate a tobacco sample prepared in the same manner except that activated carbon was not used was used.
  • silica gel was used.
  • silica gel white silica gel particles commercially available from Kishida Chemical Co., Ltd. were used. The particle size of this silica gel was 98.2% at 10 mesh pass and 40 mesh on.
  • silica gel was filled between the filters. The filling amount of silica gel was 200 mg per cigarette.
  • the cigarette sample was measured for the ventilation resistance and the amount of carbon monoxide. And the reduction rate of the obtained carbon monoxide carbon was computed by the said formula. The results are shown in Table 1. To evaluate the carbon monoxide removal rate, tobacco samples prepared in the same manner except that silica gel is not used are used. It was.
  • Cellulose acetate fiber tow (total denier 40000) composed of Y-shaped filaments (2.2 denier) is opened to a width of about 20cm, and is used to produce a cigarette filter for cigarette smoke (Howie, Germany)
  • KDF2 / AC1 / AF1 activated carbon powder addition device
  • iron oxide powder supporting 5% gold fine particles (average particle size 5 nm) as a catalytic active component per 100 parts by weight of the opened tow (average (Particle size 250 ⁇ m) 50 parts by weight were evenly sprayed when the filter was lifted, and the tow was fed to the paper mill, and the tow was lifted at a speed of 400 m / min.
  • the filter rod was cut to a length of 102 mm with a cutter.
  • the obtained filter was further cut to a length of 25 mm to produce a filter sample.
  • a cellulose acetate fiber tow (total denier 37000) composed of Y-shaped filaments (3.0 denier) to a width of about 25 cm
  • the activated carbon powder addition device of YF, Kyuni Co., Ltd., KDF2 / AC1 / AF1 apply 190 parts by weight of catalyst-supported activated carbon to 100 parts by weight of the opened tow evenly when lifting the filter.
  • the tow was fed to a paper punching device, the tow was lifted at a speed of 400 m / min using a paper roll, and the obtained filter rod was cut into a length of 100 mm with a cutter.
  • the obtained filter was further cut to a length of 20 mm to produce a filter sample.
  • active carbon (average particle diameter 450 ⁇ m, specific surface area 1000 ⁇ 2 / %) was used.
  • aqueous solution D 6.5 g of sodium carbonate (Na2C03) was dissolved in 500 ml of distilled water and heated to 70 ° C. with stirring (aqueous solution D). While stirring at 70 ° C, the dispersion C was added to the aqueous solution D at a stretch and mixed, and the temperature was kept at 70 ° C and stirred for 1 hour.
  • the activated carbon supported catalyst of (Au / Fe 2 0 3 / active carbon) 200 mg was filled between the filter, to prepare a tobacco sample.
  • the cigarette sample was measured for the ventilation resistance and carbon monoxide content.
  • the removal rate of the obtained carbon monoxide was computed by the said formula.
  • Table 2 As a target product for evaluating the carbon monoxide removal rate, a tobacco sample prepared in the same manner except that no catalyst was used was used was used.
  • the silica gel supported catalyst (Au / Ti0 2 / silica gel) 200 mg was filled between the filter, to prepare a tobacco sample.
  • the cigarette sample was measured for the ventilation resistance and the amount of carbon monoxide.
  • the obtained carbon monoxide removal rate was computed by the said formula. The results are shown in Table 2.
  • a target product for evaluating the carbon monoxide removal rate a tobacco sample prepared in the same manner except that no catalyst was used was used was used.
  • Supported catalyst blend (Au / Fe 2 0 3 / activated carbon) + (Au / Ti0 2 / silica gel)
  • Example 2 Each lOOmg (total 200 mg) of the supported catalyst prepared in Example 1 and Example 4 was filled between filters in the same manner as in Comparative Example 1 to prepare a tobacco sample.
  • the cigarette sample was measured for the ventilation resistance and the amount of carbon monoxide.
  • the obtained carbon monoxide removal rate was computed by the said formula. The results are shown in Table 2.
  • a target product for evaluating the carbon monoxide removal rate a tobacco sample prepared in the same manner except that no catalyst was used was used was used.
  • the carbon monoxide removal rate is higher in the examples than in the comparative examples, and the carbon monoxide removal performance is higher. Moreover, it is suitable as a cigarette filter having a low ventilation resistance value.
  • the cigarette filter of the present invention can be efficiently applied to carbon monoxide contained in cigarette smoke, and can be applied to low tar cigarettes and the like because it does not increase ventilation resistance.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Catalysts (AREA)

Abstract

L'invention concerne un filtre à cigarette qui présente une faible résistance à un écoulement de gaz ainsi qu'une excellente capacité de retenue de l'arôme de la cigarette tout en éliminant efficacement le monoxyde de carbone de la fumée de la cigarette et en réduisant l'afflux de monoxyde de carbone dans la cavité orale d'un fumeur. Le filtre à cigarette comprend un filtre à fumée de cigarette qui est constitué d'au moins trois parties, un support granulaire constitué d'une matière poreuse contenant un composant catalytique étant placé dans la partie intermédiaire, et le composant catalytique comprenant un composé de métal et des micrograins d'or. En ce qui concerne la taille de grain du support granulaire, il contient 90 % en poids ou plus, de grains qui passent à travers un tamis de 10 meshs mais qui ne passent pas à travers un tamis de 70 meshs (passent 10 meshs et restent sur 70 meshs).
PCT/JP2007/065876 2006-08-10 2007-08-08 Filtre à cigarette Ceased WO2008018617A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-242131 2006-08-10
JP2006242131 2006-08-10

Publications (1)

Publication Number Publication Date
WO2008018617A1 true WO2008018617A1 (fr) 2008-02-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/065876 Ceased WO2008018617A1 (fr) 2006-08-10 2007-08-08 Filtre à cigarette

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Country Link
WO (1) WO2008018617A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010213655A (ja) * 2009-03-18 2010-09-30 Daicel Chem Ind Ltd たばこフィルタ素材およびそれを用いたたばこフィルタ。
EP2636319A3 (fr) * 2010-10-06 2014-03-12 Celanese Acetate LLC Filtres à fumée pour dispositifs à fumer avec des masses poreuses ayant une charge de particules de carbone et chute de pression encapsulée
CN106061296A (zh) * 2013-12-30 2016-10-26 菲利普莫里斯生产公司 用于吸烟制品的活性炭
CN108936800A (zh) * 2018-06-08 2018-12-07 湖南中烟工业有限责任公司 烟草空心颗粒及其制备方法与卷烟滤棒
WO2019122468A1 (fr) 2017-12-21 2019-06-27 Universidad De Alicante Filtre combiné pour l'élimination de goudrons et de composés toxiques de la fumée du tabac

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6028823A (ja) * 1983-07-26 1985-02-14 Japan Tobacco Inc 一酸化炭素酸化触媒の製造法
JPS60216843A (ja) * 1984-04-03 1985-10-30 Patent Puromooto Center:Kk 還元性ガス酸化触媒フイルタ
JPH01228557A (ja) * 1988-03-10 1989-09-12 Nibetsukusu Kk 酸化触媒及びその製造方法並びに喫煙フィルター
JPH09140370A (ja) * 1995-11-21 1997-06-03 Daicel Chem Ind Ltd たばこエレメントおよびその製造方法
JPH11235169A (ja) * 1998-02-23 1999-08-31 Daicel Chem Ind Ltd たばこエレメントおよびその製造方法
JP2000210069A (ja) * 1999-01-22 2000-08-02 Japan Tobacco Inc シガレット用フィルタ―
WO2003013287A1 (fr) * 2001-08-02 2003-02-20 Japan Tobacco Inc. Filtre a cigarette

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6028823A (ja) * 1983-07-26 1985-02-14 Japan Tobacco Inc 一酸化炭素酸化触媒の製造法
JPS60216843A (ja) * 1984-04-03 1985-10-30 Patent Puromooto Center:Kk 還元性ガス酸化触媒フイルタ
JPH01228557A (ja) * 1988-03-10 1989-09-12 Nibetsukusu Kk 酸化触媒及びその製造方法並びに喫煙フィルター
JPH09140370A (ja) * 1995-11-21 1997-06-03 Daicel Chem Ind Ltd たばこエレメントおよびその製造方法
JPH11235169A (ja) * 1998-02-23 1999-08-31 Daicel Chem Ind Ltd たばこエレメントおよびその製造方法
JP2000210069A (ja) * 1999-01-22 2000-08-02 Japan Tobacco Inc シガレット用フィルタ―
WO2003013287A1 (fr) * 2001-08-02 2003-02-20 Japan Tobacco Inc. Filtre a cigarette

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010213655A (ja) * 2009-03-18 2010-09-30 Daicel Chem Ind Ltd たばこフィルタ素材およびそれを用いたたばこフィルタ。
EP2636319A3 (fr) * 2010-10-06 2014-03-12 Celanese Acetate LLC Filtres à fumée pour dispositifs à fumer avec des masses poreuses ayant une charge de particules de carbone et chute de pression encapsulée
EP2629633A4 (fr) * 2010-10-06 2014-04-16 Celanese Acetate Llc Filtre à fumée pour dispositifs à fumer comportant des masses poreuses ayant une charge de particules de carbone et une chute de pression encapsulée
CN106061296A (zh) * 2013-12-30 2016-10-26 菲利普莫里斯生产公司 用于吸烟制品的活性炭
WO2019122468A1 (fr) 2017-12-21 2019-06-27 Universidad De Alicante Filtre combiné pour l'élimination de goudrons et de composés toxiques de la fumée du tabac
CN108936800A (zh) * 2018-06-08 2018-12-07 湖南中烟工业有限责任公司 烟草空心颗粒及其制备方法与卷烟滤棒
CN108936800B (zh) * 2018-06-08 2021-03-09 湖南中烟工业有限责任公司 烟草空心颗粒及其制备方法与卷烟滤棒

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