WO2005094619A1

WO2005094619A1 - Tobacco smoke filter

Info

Publication number: WO2005094619A1
Application number: PCT/EP2005/003533
Authority: WO
Inventors: Gunther Peters; Inga Gurke; Christian Müller; Ludwig Riepert; Bernhard Lücke; Irene Pitsch; Michael Bartoszek; Hendrik Kosslick
Original assignee: Reemtsma Cigarettenfabriken Gmbh
Priority date: 2004-04-02
Filing date: 2005-04-04
Publication date: 2005-10-13
Also published as: EP1729603A1

Abstract

A catalyst support is placed inside a tobacco smoke filter for reducing tobacco smoke constituents and is preferably provided as a component of a complete catalyst having an active constituent. When producing a tobacco smoke filter of this type with filter material, a catalyst support is placed inside the filter material.

Description

Tobacco smoke filter

The invention relates to a tobacco smoke filter and a method for producing such a tobacco smoke filter.

Tobacco smoke filters are e.g. used in cigarettes to reduce the amount of condensate or other ingredients in tobacco smoke (e.g. nicotine). However, many, often undesirable substances in tobacco smoke can pass through a conventional tobacco smoke filter unhindered or are at least not sufficiently retained in it. Such substances are e.g. Hydrocyanic acid (HGN), carbonyls or methanol.

It is an object of the invention to provide a tobacco smoke filter which reduces ingredients in tobacco smoke better than a conventional tobacco smoke filter.

This object is achieved by a tobacco smoke filter with the features of claim 1. Advantageous refinements of the invention result from the subclaims. Claim 31 relates to a smoking product with such a tobacco smoke filter, claims 32 and 33 relate to methods for producing such a tobacco smoke filter.

A catalyst carrier is arranged in the tobacco smoke filter according to the invention in order to reduce tobacco smoke components. The catalyst support is preferably provided with an active component. The term "reduction" is to be understood here generally in the sense of "reduction" and not restricted in the sense of a chemical reduction reaction. The terminology is chosen so that a catalyst support together with an active component results in a complete catalyst (supported catalyst). The term “catalyst support” used here is to be understood in a broad sense and is not intended to imply that the use of an active component is absolutely necessary. For, as is apparent from the described embodiments below, has surprisingly been shown to significantly reduce unwanted ingredients ^■ tobacco smoke (eg hydrogen cyanide) that already reach can, if only the carrier component (ie the "catalyst support") without (usually expensive) active component is used. The catalyst support can also have several substances, in particular a mixture of different materials.

Solids with adsorptive and / or catalytic properties are particularly suitable as catalyst supports, ie also solids which are themselves catalytically active without an additional active component applied. Suitable are e.g. solid metal oxides which have acidic or alkaline surface centers, or acidic or alkaline oxidic solids, in particular if they are suitable as carriers for metallic active components, or metal oxides with catalytically active surface centers which are suitable as carriers for metallic active components, or as Carriers of metallic active components suitable metal oxides. A number of examples of catalyst supports are explained below.

The active component preferably has metallic active centers. Preference is given to catalytically active metals which are present as metal or metal compound, for example in the form of particles with a size in the range from 1 nm to 100 n or in the range from 1 nm to 20 nm. The active component can be, for example, gold, copper, palladium, platinum , Ruthenium or silver, but also mixtures of these metals. A preferred active component is gold. The preferred mass ratio of active component to catalyst support is in the range from 0.002 to 0.04. A good catalytic effect is shown in this area, while the costs for the catalyst are not yet too high.

The active component can advantageously be applied to the catalyst support in a precipitation process. The precipitation can e.g. with sodium hydroxide solution (NaOH) or urea as a precipitant. In contrast to an impregnation process, a precipitation process has the advantage that disperse catalysts are formed. In the impregnation process, the solid (catalyst support) is soaked in a solution which contains the active component; in the precipitation process, an active metal is precipitated as hydroxide with a suitable precipitant and is dispersed on the surface of the catalyst support by means of a chemisorption process.

Preferably the catalyst support has acidic or alkaline ^'properties. Acidic properties are particularly preferred. The catalyst support can, for example, titanium dioxide (Ti0 ₂ ), iron oxides (in particular α-Fe ₂ 0 ₃ ), aluminum oxide (A1 ₂ 0 ₃ ), silicon dioxide (Si0 ₂ ), aluminum hydroxide, silicon hydroxide, zinc oxide (ZnO), magnesium oxide (MgO), hydrotalcite Zeolites (preferably of the types HY, H-Beta, H-ZSM5, and / or HY (D)), ion exchangers, carbonized ion exchangers, activated carbons or mixtures of such materials. Mixtures of different catalyst support materials can be useful, for example, to selectively achieve a reduction in the gas phase content for a number of given tobacco smoke components.

In a particularly preferred embodiment, the catalyst support contains Al0 ₃ and Si0 ₂ . As a rule, this type of catalyst support also has water which, for example, as crystal water or as adsorbed surface water or in water releasing compounds can be present. At least the major part of the water can be measured as loss on ignition, whereby a material sample is first heated to 150 ° C and after reaching a constant weight to 950 ° C until the weight remains constant. In the preferred catalyst support, the water fraction measurable as loss on ignition is preferably in the range from 5% by weight to 30% by weight. Other constituents of the catalyst support together preferably make up less than 0.4% by weight. The weight ratio of A1 ₂ 0 ₃ to Si0 ₂ is preferably in the range from 0.5 to 100, in particular in the range from 1.5 to 40, values from or in the range from 1.5 and 4 and 19 being particularly preferred. Such a catalyst support has proven to be particularly effective in reducing tobacco smoke components, even without an additional active component.

If a solid acid such as e.g. If a zeolite is used, a salt form can be used as the starting product, preferably an ammonium resin, which can be converted into H form by heating and / or acidification.

The catalyst support preferably has a pore size of at least 0.3 nm or at least 3 nm or at least 10 nm, a preferred upper limit of the pore size being 100 nm. The pore size is an average pore diameter, as can be specified for circular or spherical pores. The terms "pore size" and "pore diameter" are both common; In the following, "pore size" is mostly used.

The catalyst support can be in very different forms, for example as microfine dust with particle sizes in the range from 1 μm to 15 μm, as powder or granules with particle sizes in the range from 10 μm to 2.5 mm or in the form of fibers with diameters in the range from 1 μm to 100 μm. A filter body extruded from catalyst carrier material is also conceivable, for example per, which preferably has the dimensions of a conventional tobacco smoke filter and can contain one or more longitudinal channels. Mixed forms are also conceivable for the catalyst support, in particular mixed forms with components which are selected from the aforementioned forms.

In a preferred embodiment, the catalyst support has a granular structure, preferably more than 98% by weight of the catalyst support having a grain size of less than 150 μm.

^• The tobacco smoke filter according to the invention can be manufactured in different forms. Examples are monofilters, double filters, triple filters, quadruple filters, quintuple filters or in general multiple filters, core filters and recess filters. A further possibility are chamber filters, also chamber filters in which catalyst carriers (with or without active component) are contained in one chamber. These types of filters are known in principle; however, it must be ensured that the catalyst carrier (possibly with active component) is introduced into the tobacco smoke filter (see below). In a further possibility, the tobacco smoke filter contains one or more extruded filter bodies which are extruded from the catalyst carrier (see above), such a filter body also being able to make up essentially the entire tobacco smoke filter.

The tobacco smoke filter according to the invention preferably has filter material in which catalyst support or catalyst support with active component is arranged to reduce tobacco smoke components. The filter material can be present, for example, in the form of fibers, also continuous fibers or staple fibers, in the form of paper, also crimped paper, in the form of foil, also crimped foil, as a fleece, as an extruded foam or in a mixed form. Suitable materials for the filter material are, for example, cellulose acetate, cellulose, polymers and polymer derivatives (in particular polyolefins, starch and starch derivatives) and natural fibers (preferably hemp, flax or tobacco). Mixed materials are also conceivable.

In a method for producing a tobacco smoke filter with filter material, in which catalyst carrier with or without an active component is arranged to reduce tobacco smoke components, the catalyst carrier, which is optionally provided with an active component, is introduced into the filter material. For that there are different possibilities.

The catalyst carrier can be sprinkled onto the filter material from a conveyor belt, or the catalyst carrier is mixed with the filter material in a drum.

Another possibility is to dust the catalyst carrier onto the filter material, preferably in a powder chamber. EP 0 913 100 A2 describes a method and a device for applying substances to a filter material, which work according to this principle and can also be used if catalyst support is used as the substance.

Furthermore, the catalyst carrier can be introduced in pulses by means of an air nozzle into a strand of filter material. The air nozzle opens coaxially into the strand of filter material. The principle of this method is explained in DE 100 10 176 AI.

A suspension of the catalyst support can also be applied to the filter material, with subsequent drying. It is also conceivable to introduce the catalyst carrier into the paper pulp when producing a filter material made of paper. Another possibility is to add the catalyst carrier in the spinning process of fibers if the filter material has fibers.

If the filter material is made of foam, the catalyst carrier can be added in the extrusion process in the production of such a filter material.

WO 01/80973 AI describes a method in which substances are introduced into the pores of open-pore fibers of a filter material containing open-pore fibers, e.g. with the help of an electrostatic field. Such a method can also be applied to the catalyst carrier.

In another example, the catalyst support is spread between two nonwoven or paper webs. This is followed by a calendering and drying process.

If the filter material is made from regenerated cellulose (e.g. "Lyocell"), the catalyst support, which is optionally provided with an active component, can be added to the filter material during the extrusion of the fibers.

In addition, other possibilities are also conceivable for introducing the catalyst carrier into filter material.

The tobacco smoke filter is preferably set up to selectively reduce specified tobacco smoke components, for example hydrocyanic acid (HCN), alcohols (in particular methanol) and / or carbonyls (in particular acrolein, diacetyl, 2-butanone and / or i-butyraldehyde). How this can be achieved can be seen from the examples described below. For example, for the selective reduction of HCN, a catalyst support provided with gold as active component with A1 ₂ 0 ₃ and Si0 ₂ or a catalyst provided with gold as active component are particularly suitable. carrier with ZnO or hydrotalcite as a catalyst carrier with or without an active component. For the selective reduction of carbonyls, catalyst supports with A1 ₂ 0 ₃ and Si0 ₂ , in particular with a weight ratio of Al ₂ 0 ₃ to Si0 ₂ of 1.5, or catalyst supports with zeolites, preferably of the HY type, are particularly suitable, in each case with or without active component.

The tobacco smoke filter according to the invention is particularly suitable for smoking products such as cigarettes, cigarillos or filter tubes (which are customary for making cigarettes yourself).

In the following, the invention is explained further with the aid of examples.

example 1

This example shows the effect of a catalyst carrier, which contains no additional active component, on tobacco smoke, namely on the mainstream smoke of cigarettes.

To investigate the effect of various catalyst support materials on the content of selected gas phase substances, a 20-channel smoke machine from Borgwaldt (RM 20 / CS) was equipped with 20 cigarettes and optionally with a glass fiber filter of 92 mm (Cambridge filter) to separate the wet condensate. The test cigarettes were previously conditioned according to ISO 3402. About 1000 mg of each sample from a catalyst support were weighed into a glass reactor with a frit bottom (inside diameter 3.6 cm). The entire gas phase of the 20 cigarettes flowed through the reactor from above during the smoking. When using the glass fiber filter, the reactor was positioned immediately behind the glass fiber filter. Table 1 Percentage change in the content of selected gas phase components in cigarette mainstream smoke (reactor model) for various catalyst support materials without additional active component, with (CF) and without (Ges.-R.) cambridgefilter

I I

In a single measurement, 20 cigarettes were smoked according to ISO 3308, the moist condensate was deposited on the glass fiber filter with an existing glass fiber filter, and the gas phase was passed through the reactor to the pump of the smoking machine. Using a sampling valve, defined puffs of different cigarettes were taken for the subsequent analysis and collected in a glass flask sampler. Immediately after smoking, 6 ml of a respective gas sample was transferred with a sample loop into the injector of a gas chromatograph, separated and detected using FID (flame ionization detection). A certified test gas of methane in nitrogen was used as the internal standard (calibration).

A quantification was carried out for the following gas phase components: isoprene, acetaldehyde, propionaldehyde, furan, i-butyraldehyde, acetone, acrolein, 2-methylfuran, 2-butanone, methanol, benzene-, 3-buten-2-one, 2, 5 -Dimetylfuran ,. Diacetyl, acetonitrile, hydrogen cyanide, toluene, styrene, acrylonitrile, 1,3-butadiene (absolute values in μg per cigarette). Two individual measurements were averaged to evaluate the results.

To assess the effects of different catalyst support materials, the results were compared with those of a comparison measurement. The comparison measurement was carried out without catalyst support material, i.e. with an empty reactor.

Table 1 shows a summary of the results for various catalyst support materials. ^'' The percentage change in the content of the respective gas phase component relative to the comparison measurement with an empty reactor is given, for each catalyst support in the first column when using the glass fiber filter (CF) with separated wet condensate and in the second column without using the glass fiber filter if the Carrier materials the total smoke (Ges.-R.) were exposed. Trade names are used as an abbreviation for the catalyst support materials.

The material called "Siral 5" contains a mixture of Al2O3 (as boehmite) and Si0 ₂ in a weight ratio of 95 to 5 and was calcined at about 200 ° C to 300 ° C before use, resulting in a reduction in the original loss of ignition measurable water content of approx. 25% by weight led to a lower value. A corresponding material, but calcined by the manufacturer at about 600 ° C, is sold by Sasol Germany GmbH under the name "Siralox 5/320". Other components are carbon with about 0.2 wt .-%, Fe0 ₃ with about 0.01 wt .-% and Na ₂ 0 with about 0.005 wt .-%. The bulk density is in the range from 450 to 650 g / l and the median particle size is approximately 50 μm. To determine the loss on ignition, a material sample is heated to 150 ° C at a temperature increase rate of 15 K / min and then, after the sample mass has not changed, at a temperature increase rate of approx. 40 K / min to 950 ° C. After reaching a constant mass, the loss on ignition is the difference to the initial mass of the sample.

The two "Puralox" materials are also distributed by Sasol Germany GmbH and essentially contain A1 ₂ 0 ₃ . 98.7% by weight of the material have a grain size of less than 125 μm.

The catalyst carrier material "Kronos 1001" (Kronos International, Inc.) consists of at least 99% Ti0 ₂ with a density of 3.8 g / cm ³ (typical for anatase pigments) and a bulk density of 450 g / 1 to 700 g /1.

"Siralox 1.5 / 250" (Sasol Germany GmbH) contains Al ₂ 0 ₃ and Si0 ₂ in a weight ratio of 98.3 to 1.7 and water, the loss on ignition (see above) being 8.1% by weight. The specific surface of the material is 248 m ² / g, the bulk density is approx. 680 g /. 1 76.6% by weight of the material have a grain size of less than 90 μm.

Example 2

With the measurements for this example, the effect of different catalysts with active components and different catalyst supports on the content of selected gas phase components was investigated. The measurements were carried out using the same apparatus (20-channel smoke machine with glass fiber filter and glass reactor for the sample) as described in Example 1.

Table 2 shows the results for various catalyst supports. In all cases, finely dispersed gold was used as the active component. The catalyst supports "Siral 5", "Puralox" and "Kronos 1001" have already been explained in connection with Example 1. Table 2 also contains results for the catalyst support zinc oxide (ZnO; prepared by precipitation from zinc nitrate hexahydrate and NaOH, then calcined at 250 ° C. for 3 hours).

A glass fiber filter (Cambridge filter) was always used in the measurements summarized in Table 2, so that the wet condensate was separated on this filter.

Table 2 shows the carrier effect for each catalyst support in the first column, ie the percentage change in the content of the corresponding gas phase component in relation to the comparison measurement when the reactor is empty. A minus sign means, as in example 1, a decrease. The catalyst effect in the respective second column is the percentage change relative to the respective measurement with a catalyst carrier alone, that is to say without an active component, and accordingly gives Table 2 Percentage change in the content of selected gas phase components in cigarette mainstream smoke (reactor model, with Cambridge Reg filter) for various catalyst support materials; Carrier effect: without active component; Catalyst effect: with gold active component (additional effect)

ω

the additional improvement that can be achieved with the help of the active component.

The results summarized in Tables 1 and 2 show that both the investigated oxidic catalyst support materials alone and the corresponding gold catalysts are suitable systems for the depletion of selected organic ingredients from cigarette smoke. For HCN in particular, a strong reduction is achieved up to the complete removal from the gas phase (in the "Siral 5" / gold active component system).

Depending on the materials used ("Siral 5", "Puralox", "Kronos 1001", zinc oxide), different depletion or reduction effects are observed for individual classes of substances. With "Siral 5" and "Puralox", reductions of 50% to 80% were found without the use of gold active components for i-butyraldehyde, methanol, diacetyl and HCN. The corresponding gold supported catalysts cause additional enrichments. The tests with carrier materials (Table 1) show similar effects even in the presence of condensate (smoking without a Cambridge filter, ie with total smoke). These observations suggest that depletion is a complex process, probably due to catalytic, adsorptive, and reactive processes. The surface chemical (Lewis and Brönstedt acidic, basic, hydrophilic, hydrophobic) and textural (specific surface, porosity) properties of the catalyst support materials and the complete catalysts (with active component and catalyst support) are of great influence. In addition to the oxidic carrier materials investigated in Examples 1 and 2, structured microporous (zeolites) and mesoporous materials also show depletion properties, particularly with respect to aromatic substances. Example 3

Further carrier materials, namely zeolites of different types, were examined analogously to Example 1, the values for the total smoke being given in Table 3.

HY (D) -20 is a 20-minute dealuminated HY zeolite that was previously in the sodium form and by repeated ion exchange into the salt form, namely the ammonium form, and then by hydrothermal treatment or thermal decomposition 400 ° C was converted into the H form. By removing the aluminum atoms from the framework, the number of Brönsted centers was reduced. At the same time, the AI atoms removed from the scaffold form Lewis centers.

Table 3 Percentage change in the content of selected gas phase components in the main cigarette smoke (reactor model) for various microporous catalyst support materials with a pore size of less than 2 nm (without additional active component), without a Cambridge filter

Example 4

The catalyst supports or catalyst supports with active component gold listed in Table 4 bring about a high selective reduction of HCN. The measurements were carried out analogously to Example 1. In some cases a Cambridge filter was used.

Hydrotalcites are layered Mg-Al double hydroxides in which the magnesium content is given in%. The hydrotalcite Mg30 (550 ° C) contains 30% magnesium and was calcined at 550 ° C. With thermal treatment, hydrotalcites change to the amorphous state.

Mesoporous A1 ₂ 0 ₃ has a pore diameter between 2 nm and 50 nm, here 10 nm.

Table 4 Percentage change in the content of HCN in the main stream of cigarettes (reactor model) for various catalyst support materials (without additional active component or with gold (Au) as active component), with (+) or without (-) Cambridge filter (CF)

Example 5

The catalyst supports or catalyst supports with active component gold listed in Table 5 bring about a high selective reduction for carbonyls (ketones, aldehydes). The measurements were again carried out analogously to Example 1.

The values for aldehydes and ketones in the table were determined by averaging the percentage decrease in the following substances:

For aldehydes: acrolein, acetaldehyde, propionaldehyde and i-butyraldehyde;

For ketones: acetone, 2-butanone, 3-buten-2-one and diacetyl.

Al-MMS ^' 100 is an aluminum-substituted mesoporous silicate molecular sieve with a pore diameter of 10 nm.

Table 5 Percentage change in the content of aldehydes and ketones in cigarette mainstream smoke (reactor model) for various catalyst support materials (without additional active component or with gold (Au) as active component), with (+) or without (-) cambridgesfilter (CF)

Example 6

Active components of a catalyst are applied to support materials (catalyst support) by precipitation, as explained in the following example for the preparation of a gold / “Siral 5” supported catalyst.

An aqueous carrier suspension of 30 g of "Siral 5" (amorphous aluminosilicate, see Example 1) in 500 ml of water was heated to 70 ° C. with stirring and adjusted to a pH = 7. For this purpose, a mixture consisting of 900 mg of tetrachloroauric acid, 450 ml of distilled water and 6 g of urea was added with stirring. The reaction mixture was heated to 70 ° C. and stirred at 70 ° C. for 5 hours. After adding a further 2 g of urea and stirring (14 h / 70 ° C.), the mixture was cooled and a magnesium citrate solution (4.17 g of MgHC ₆ H ₅ 0 ₇ - 5H ₂ 0 in 90 ml of water), the pH of which was added Value was previously set to 7 in NaOH. After a stirring time of 1 to 7 days, the solid was separated off by centrifugation, washed three times with 500 ml of water and dried in a vacuum drying cabinet at a pressure of <50 hPa for 17 h at room temperature and 4 h at 50 ° C. and then lightly ground in a mortar. The catalyst obtained was heated to 250 ° C. in air at a heating rate of 1 K / min and held at this temperature for 3 hours. The yield was 28.8 g. Example 7

Lyocell fibers with 25% carbon were made by an extrusion process, such as described in DE 100 53 359 AI, the grain size of the activated carbon was less than 12 microns.

The fibers were examined as in Example 1. The values for the gas phase lowering are listed in Table 6. The weight of the fibers was chosen so that the measurement is comparable to the values from Examples 1 to 5 and corresponds to a net weight of approximately 1000 mg of activated carbon.

Table 6 Percentage change in the content of selected gas phase components in cigarette mainstream smoke (reactor model) for Lyocell fibers with 25% activated carbon (without additional active component), without a Cambridge filter

Claims

claims

1. Tobacco smoke filter, in which a catalyst carrier is arranged to reduce tobacco smoke components.

2. Tobacco smoke filter according to claim 1, characterized in that the catalyst carrier is provided with an active component.

3. Tobacco smoke filter according to claim 2, characterized in that the active component has metallic active centers.

4. Tobacco smoke filter according to claim 2 or 3, characterized in that the active component has at least one catalytically active metal which is present as a metal or metal compound, preferably in the form of particles with a size in the range from 1 nm to 100 nm.

5. Tobacco smoke filter according to claim 2 or 3, characterized in that the active component has at least one catalytically active metal which is present as a metal or metal compound, in the form of particles with a size in the range from 1 nm to 20 nm.

6. Tobacco smoke filter according to claim 4 or 5, characterized in that the active component has at least one metal selected from the following group: gold, copper, palladium, platinum, ruthenium, silver.

7. tobacco smoke filter according to claim 4 or 5, characterized in that the active component comprises gold.

8. tobacco smoke filter according to one of claims 2 to 7, characterized in that the mass ratio of active compo- nente to catalyst carrier is in the range of 0.002 to 0.04.

9. tobacco smoke filter according to one of claims 2 to 8, characterized in that the active component is applied with a precipitation process.

10. Tobacco smoke filter according to one of claims 1 to 9, characterized in that the catalyst support has acidic or alkaline properties.

11. Tobacco smoke filter according to one of claims 1 to 9, characterized in that the catalyst support has acidic properties.

12. Tobacco smoke filter according to one of claims 1 to 11, characterized in that the catalyst carrier has at least one of the materials selected from the following group: Ti0 ₂ , α-Fe ₂ 0 ₃ , A1 ₂ 0 ₃ , Si0 ₂ , ZnO, Zeoli - the, ion exchanger, carbonized ion exchanger, activated carbon.

13. Tobacco smoke filter according to one of claims 1 to 12, characterized in that the catalyst support comprises at least one of the materials selected from the following group: aluminum hydroxide, silicon hydroxide.

14. Tobacco smoke filter according to one of claims 1 to 13, characterized in that the catalyst support comprises at least one of the materials selected from the following group: MgO, hydrotalcite.

15. Tobacco smoke filter according to one of claims 1 to 14, characterized in that the catalyst carrier at least one of the materials selected from the following group contains: zeolites of the type HY, zeolites of the type H-Beta, zeolites of the type H-ZSM5, zeolites of the type HY (D).

16. Tobacco smoke filter according to one of claims 1 to 15, characterized in that the catalyst carrier has A1 ₂ 0 ₃ and Si0 ₂ , preferably the weight ratio of A1 ₂ 0 ₃ to Si0 ₂ in the range from 0.5 to 100, preferably 1, 5 to 40, and preferably other constituents of the catalyst support apart from water together make up less than 0.4% by weight.

17. Tobacco smoke filter according to claim 16, characterized in that the weight ratio of A1 ₂ 0 ₃ to Si0 ₂ assumes one of the values selected from the following list: 19, 4, 1.5.

18. Tobacco smoke filter according to one of claims 1 to 17, characterized in that the catalyst carrier has been added as a solid acid in salt form, preferably zeolite as ammonium salt, and has been converted into H form by heating and / or acidification.

19. Tobacco smoke filter according to one of claims -1 to 18, characterized in that the catalyst support has a pore size of at least 0.3 nm and preferably of at most 100 nm.

20. Tobacco smoke filter according to claim 19, characterized in that the catalyst support has a pore size of at least 3 nm and optionally of at least 10 nm.

21. Tobacco smoke filter according to one of claims 1 to 20, characterized in that the catalyst carrier is present in at least one of the forms selected from the following group: microfine dust with particle sizes in the loading ranging from 1 μm to 15 μm, powder or granules with particle sizes in the range from 10 μm to 2.5 mm, fibers with diameters in the range from 1 μm to 100 μm, extruded filter body.

22. Tobacco smoke filter according to one of claims 1 to 21, characterized in that the catalyst support has a granular structure, preferably more than 98% by weight of the catalyst support having a grain size of less than 150 μm.

23. Tobacco smoke filter according to one of claims 1 to 22, characterized in that the tobacco smoke filter has one of the shapes selected from the following group: monofilter, double filter, triple filter, quadruple filter, quintuple filter, multiple filter, core filter, recess filter, chamber filter, chamber filter with catalyst carrier in chamber.

24. Tobacco smoke filter according to one of claims 1 to 23, characterized in that the tobacco smoke filter is set up for the selective reduction of predetermined tobacco smoke components.

25. Tobacco smoke filter according to one of claims 1 to 24, characterized in that the tobacco smoke filter is set up to reduce at least one of the substances selected from the following group: HCN; Alcohols, preferably methanol; Carbonyls, preferably acrolein, di-acetyl, 2-butanone, i-butyraldehyde, acetaldehyde, propional dehyde, acetone, 3-buten-2-one.

26. Tobacco smoke filter according to claim 25, characterized in that the tobacco smoke filter is set up for the selective reduction of HCN, the tobacco smoke filter preferably being a catalytic converter provided with gold as an active component. lysatorträger according to claim 16 and / or a provided with gold as an active component catalyst support with ZnO and / or hydrotalcite as a catalyst support with or without active component.

27. Tobacco smoke filter according to claim 25 or 26, characterized in that the tobacco smoke filter is set up for the selective reduction of carbonyls, the tobacco smoke filter preferably having a catalyst support according to claim 16 with a weight ratio of Al ₂ 0 ₃ to Si0 ₂ of 1.5 with or without Active component and / or a catalyst carrier with zeolites, preferably of the HY type, with or without an active component.

28. Tobacco smoke filter according to one of claims 1 to 27, characterized by filter material, in which catalyst carrier without active component or catalyst carrier with active component is arranged to reduce tobacco smoke components.

29. Tobacco smoke filter according to claim 28, characterized in that the filter material is in at least one of the forms selected from the following group: fibers, continuous fibers, staple fibers; Paper, crimped paper; Foil, crimped foil; Fleece; extruded foam.

30. Tobacco smoke filter according to claim 28 or 29, characterized in that the filter material comprises at least one of the materials selected from the following group: cellulose acetate; cellulose; Polymers, polymer derivatives, preferably as polyolefins, starch, starch derivatives; Natural fibers, preferably as hemp, flax, tobacco.

31. A smoke product with a tobacco smoke filter according to one of claims 1 to 30, wherein the smoke product is preferably a cigarette, a cigarillo or a filter sleeve.

32. A method for producing a tobacco smoke filter according to one of claims 28 to 30, wherein the catalyst carrier, which is optionally provided with an active component, is introduced into the filter material in one of the ways selected from the following group: trickling the catalyst carrier from a conveyor belt onto the filter material; Mixing the catalyst support with the filter material in a drum; Dusting the catalyst support onto the filter material, preferably in a powder chamber; pulsed introduction of the catalyst carrier into a strand of filter material by means of an air nozzle which coaxially opens into the strand of filter material; Applying a suspension of the catalyst support to the filter material and then drying; Introducing the catalyst carrier into the paper pulp in the manufacture of a filter material made of paper; Adding the catalyst carrier in the spinning process in the production of a filter material made of fibers; Adding the catalyst carrier in the extrusion process in the production of a filter material made of a foam; Introducing the catalyst carrier into the pores of open-pore fibers of a filter material containing open-pore fibers, preferably by means of an electrostatic field; Spreading the catalyst carrier between two nonwoven or paper webs, calendering and drying.

33. A method for producing a tobacco smoke filter according to any one of claims 28 to 30, wherein the catalyst support, which is optionally provided with an active component, is added to the filter material during the extrusion of a filter material made from regenerated cellulose.