WO2008056011A1 - Mezclas tabaco-catalizador para la reducción de los compuestos tóxicos presentes en el humo del tabaco - Google Patents

Mezclas tabaco-catalizador para la reducción de los compuestos tóxicos presentes en el humo del tabaco Download PDF

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Publication number
WO2008056011A1
WO2008056011A1 PCT/ES2007/000628 ES2007000628W WO2008056011A1 WO 2008056011 A1 WO2008056011 A1 WO 2008056011A1 ES 2007000628 W ES2007000628 W ES 2007000628W WO 2008056011 A1 WO2008056011 A1 WO 2008056011A1
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Prior art keywords
mcm
tobacco
additive
mixtures
zsm
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PCT/ES2007/000628
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English (en)
Spanish (es)
French (fr)
Inventor
Antonio Marcilla Gomis
María Isabel BELTRAN RICO
Amparo Gomez Siurana
Rosa Navarro Martinez
Deseada BERENGUER MUÑOZ
Isabel Martinez Castellanos
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Universidad De Alicante
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Priority to AT07823034T priority Critical patent/ATE547015T1/de
Priority to ES07823034T priority patent/ES2383359T3/es
Priority to EP07823034A priority patent/EP2092838B1/en
Priority to DK07823034.9T priority patent/DK2092838T3/da
Publication of WO2008056011A1 publication Critical patent/WO2008056011A1/es

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Classifications

    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18Treatment of tobacco products or tobacco substitutes
    • A24B15/28Treatment of tobacco products or tobacco substitutes by chemical substances
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18Treatment of tobacco products or tobacco substitutes
    • A24B15/28Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/287Treatment of tobacco products or tobacco substitutes by chemical substances by inorganic substances only
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18Treatment of tobacco products or tobacco substitutes
    • A24B15/28Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/287Treatment of tobacco products or tobacco substitutes by chemical substances by inorganic substances only
    • A24B15/288Catalysts or catalytic material, e.g. included in the wrapping material
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00Cigars; Cigarettes
    • A24D1/002Cigars; Cigarettes with additives, e.g. for flavouring

Definitions

  • the present invention is framed in the field of the smoking articles preparation industry. More specifically, the present invention relates to the use of tobacco-catalyst mixtures for the reduction of toxic compounds present in tobacco smoke.
  • Nicotine is the main addictive component present in tobacco and, in the human body, it is transformed into a metabolite called cotinine, which, since it has been found only in smokers and passive smokers, is used as a benchmark for measure the degree of exposure to tobacco smoke.
  • the process of smoking a cigarette generates the appearance of two types of smoke currents, the so-called "mainstream", consisting of the smoke that the smoker inhales and exhales directly from the cigarette; and the secondary current consisting of the smoke that is eliminated through the lit cigarette, which is diluted in the surrounding air and inhaled by passive smokers.
  • the main current corresponds to the smoke that is generated in the combustion of tobacco and passes through the cigarette from the lit end, to exit through the end of the filter. Since this is the current As smokers inhale, it is of great interest to eliminate or reduce its content in toxic substances.
  • Li et al. Li, P., Hajaligol, M., "Oxidant / catalyst nanoparticles to reduce carbon monoxide in the mainstream smoke of a cigarette", US 20030075193, April 24, 2003] have described the use of Fe 2 ⁇ 3, CuO, TiO nanoparticles 2 , CeO 2 , Ce 2 O 3 , AI 2 O 3 , and 2 O 3 doped with Zr, Mn 2 O 3 doped with Pb, as well as mixtures of these materials, to increase the degree of conversion of CO to CO 2 .
  • This patent also describes the procedure for the preparation of cigarettes, which includes a) the addition of the nanoparticle additive to the tobacco bite, b) the introduction of the most additive tobacco bite mixture into a machine manufacture of cigarettes to form a cigarette and c) the placement of the paper wrap around tobacco to shape the final cigarette.
  • Li et al. Li, P., Rasouli, F., Hajaligol, M., "Application of nanoparticle iron oxide in cigarette for simultaneous CO and NO removal in the mainstream smoke", Beitraege Kunststoff Tabkforschubg International 21 (1) (2004), 1] They described the use of an additive formed by iron oxide nanoparticles, which is generated in situ while the cigarette is burning, and which is capable of increasing the degree of conversion of CO and NO to CO 2 and N 2 , respectively.
  • organic potassium salts can also be used as additives, which allow reducing the yield of CO, nicotine and dry nicotine-free particulate matter (NFDPM) [Li, C 1 Parry, A., "Potassium organic salts as burn additives ⁇ n cigarettes", Beitraege Kunststoff Tabkforschubg International 20 (5) (2003), 341].
  • NFDPM dry nicotine-free particulate matter
  • Jianhua et al. Jianhua, Z., Ying, W., Yilun, W, "Mesopore solid alkali, mesopore functional material, its preparation method and application", CN 1460641, 2003-12-10] describe the use of an alkaline solid catalyst and a functional material based on a silicon-based mesoporous molecular sieve (for example MCM-41 or NaA, NaY and ZSM-5 zeolites), which contains a lantanoid, actinoid or transition metal, for the reduction of nitrosamines by selective adsorption.
  • a silicon-based mesoporous molecular sieve for example MCM-41 or NaA, NaY and ZSM-5 zeolites
  • the additive is deposited in the tobacco stream during the cigarette making process, using a device that allows the material to be deposited, in powder form or in the form liquid, in suspension or as foam.
  • any of the aforementioned additives can also be added directly to tobacco using the cigarette rolling machines described by Pascual [Pascual UA, "Cigarette rolling and tobacco rolling machines", U 200202253, September 18, 2002].
  • EP 740907 describes the use of zeolitic, natural and synthetic materials, as additives to reduce toxic compounds in tobacco smoke.
  • a smoking article is claimed which is comprised of a filter, tobacco and a wrapper.
  • the additives, with different characteristics depending on the destination of the additive, are incorporated into both the filter and tobacco.
  • hydrophilic materials are preferred for mixing with tobacco.
  • These hydrophilic additives are used saturated with water and consist of zeolites X, Y, L, mordenite and BETA, and are added to tobacco, using or not adhesion agents, such as silica gel. At high temperatures, these materials act as catalysts and have positive effects in order to reduce the toxic compounds generated in the combustion of tobacco, without affecting the taste of it.
  • an additive for mixing with tobacco to reduce the amount of toxic and carcinogenic substances present in tobacco smoke
  • said additive is selected from the group formed by: a) zeolites in their acidic, sodium or iron-exchanged forms; b) mesoporous aluminosilicates in their acidic, sodium or iron-exchanged forms; c) mixtures of the above materials with oxides of iron, cerium or zirconium; and d) mixtures of the above materials.
  • the invention provides a composition comprising any form of blond, black, leaf, sting, rolling tobacco (RYO), pipe filling tobacco (MYO), pipe tobacco or any other article capable of being smoked, with at least one additive selected from: a) zeolites in their acidic, sodium and exchanged forms with iron; b) mesoporous aluminosilicates in their acidic, sodium and iron-exchanged forms; c) mixtures of the above materials with oxides of iron, cerium or zirconium; d) mixtures of the above materials.
  • the invention provides a method for reducing the amount of toxic and carcinogenic compounds present in tobacco smoke, which comprises the use of the additives of the present invention in dry blending with tobacco.
  • the invention provides a method for preparing the composition according to the invention, which comprises contacting the tobacco with the appropriate amount of additive, and mixing both components.
  • the invention provides the use of a KIT that provides the adequate amount of catalyst for the "in situ" preparation of the tobacco-additive mixture described above.
  • the kit of the invention comprises separate compartments for tobacco and additive, in the appropriate proportions, as well as instructions for its preparation. DESCRIPTION OF THE INVENTION:
  • an additive belonging to the group consisting of the following materials is described, to reduce the presence of toxic and carcinogenic compounds in tobacco smoke: acid, sodium or exchanged forms with iron of BETA zeolite (H-BETA, Na-BETA, Na-Fe-BETA, Na-Ce-BETANa-Zr-BETA); acid, sodium or exchanged forms with zeolite iron ZSM-5 (H-ZSM-5, Na-ZSM-5, Na-Fe-ZSM-5, Na-Ce-ZSM-5, Na-Zr-ZSM-5) ; acidic, sodium or exchanged forms with zeolite iron USY (H-USY, Na-USY, Na-Fe-USY, Na-Ce-USY, Na-Zr-USY); acid, sodium or exchanged forms with mesoporous aluminosilicate iron MCM-41 (Na-MCM-41, Na-Fe-MCM-41, Na-Ce-MCM
  • the additive used is selected from the group consisting of H-ZSM-5, Na-ZSM-5, Na-Fe-ZSM-5, Na-Ce-ZSM-5, Na-Zr-ZSM-5, H- USY, Na-USY, Na-Fe-USY, Na-Ce-USY, Na-Zr-USY, Na-MCM-41, Na-Fe-MCM-41, Na-Ce-MCM-41, Na-Zr- MCM-41, Na-MCM-22, Na-Fe-MCM-22, Na-Ce-MCM-22, Na-Zr-MCM-22, mixtures of the above with Fe, Ce or Zr oxides; and mixtures of these materials.
  • the additive is selected from the group formed by the sodium and iron exchanged forms of the zeolites or aluminosilicates, mixtures of Fe, Ce or Zr oxides with any of the above materials, and mixtures of the above.
  • the additive is selected from Na-MCM-41, Na-Fe-MCM-41, Na-Ce-MCM-41, Na-Zr-MCM-41, mixtures thereof with oxides of Fe, Ce or Zr; and mixtures of these materials.
  • compositions of the invention are characterized by containing as additives those materials described above.
  • the additive is selected from the group consisting of: a) the acid, sodium and exchanged forms with zeolite iron
  • BETA H-BETA, Na-BETA, Na-Fe-BETA; b) the acid, sodium and exchanged forms with zeolite iron ZSM-5: H-ZSM-5, Na-ZSM-5, Na-Fe-ZSM-5; c) the acid, sodium and exchanged forms with zeolite iron USY: H-USY, Na-USY, Na-Fe-USY; d) the acid, sodium and exchanged forms with mesoporous aluminosilicate iron MCM-41: Na-MCM-41, Na-Fe-MCM-41; e) Acid, sodium and exchanged forms with MCM-22 alumninosilicate iron: Na-MCM-22, Na-Fe-MCM-22; f) mixing oxides of Fe, Ce or Zr with any of the above materials; g) mixtures of the above.
  • the additive is selected from H-ZSM-5, Na-ZSM-5, Na-Fe-ZSM-5, Na-Ce-ZSM-5, Na-Zr-ZSM-5, H-USY, Na-USY, Na-Fe-USY, Na-Ce-USY, Na-Zr-USY, Na-MCM-41, Na-Fe-MCM-41, Na-Ce-MCM-41, Na- Zr-MCM-41, Na- MCM-22, Na-Fe-MCM-22, Na-Ce-MCM-22, Na-Zr-MCM-22, mixtures of the above with Fe, Ce or Zr oxides; and mixtures of these materials.
  • the additive is selected from the group consisting of the sodium and iron exchanged forms of the zeolites or aluminosilicates, mixtures of Fe, Ce or Zr oxides with any of the above materials, and mixtures of the above. More preferably, the additive is selected from the group consisting of Na-MCM-41, Na-Fe-MCM-41, Na-Ce-MCM-41, Na-Zr-MCM-41, mixtures thereof with Fe oxides, Ce or Zr; and mixtures of these materials.
  • the composition is characterized in that the additive is in concentrations between 0.5 and 15% by weight with respect to tobacco. Preferably in concentrations between 2 and 7% by weight with respect to tobacco.
  • the additives considered, in powder form, are added and mixed directly with the tobacco sting, without using any type of adhesive agent or any other specific technology for the preparation of the mixtures.
  • the additives of the present invention no toxic components or fibrous materials are included.
  • additives belonging to the aforementioned group of materials allows obtaining significant reductions in the generation of a considerably high number of toxic and carcinogenic compounds generated by smoking tobacco (CO 1 nicotine, tars, aldehydes, etc.), unlike what is claimed in the documents of the state of the art, where only the reduction of a few compounds (NO and NO x , in the case of Cvetkovic et al., nitrosamines in the case of Jianhua et al. or NFDMP and polynuclear aromatic hydrocarbons (PAH) in the case of Radojicic et al.).
  • NO and NO x in the case of Cvetkovic et al.
  • nitrosamines in the case of Jianhua et al. or NFDMP
  • PAH polynuclear aromatic hydrocarbons
  • the proposed procedure can be used in a highly satisfactory manner with any type of tobacco preparation (blond, black, leaf, sting, rolling tobacco, pipe tobacco and any other items that can be smoked). Notwithstanding the foregoing, the application of a few drops of water, ethanol or any other wetting agent can facilitate the manufacturing process. In addition, as already mentioned, by the described process, reductions of toxic compounds are obtained which are significantly higher than those described in other patents related thereto.
  • kits comprising separate containers for tobacco and additive can be used. Said kit or dispenser provides the adequate amount of catalyst for the preparation of blond, black, leaf, sting, rolling tobacco, pipe tobacco and any other article that can be smoked.
  • This kit can consist of a blister pack, where each cavity contains the selected amount (between 5 and 70 mg, so that a dosage between 0.5 and 15% of additive is obtained with respect to tobacco, preferably between 2 and 7% by weight, which will usually be consumed in portions of about 1 g of tobacco), individual capsules containing said amounts, a container that includes a calibrated or graduated teaspoon or any other calibrated dispenser.
  • the present invention describes the use of catalysts that have adequate characteristics from this point of view since they have a non-fibrous morphology, approximately spherical and a particle size or aggregates such that, in the proportions described in the examples, they are observed in the secondary filters used, which constitutes a guarantee that they do not pass through the conventional filter. For other applications, it may be necessary to adjust the particle size to ensure this behavior.
  • This patent describes the use of certain zeolites and other aluminosilicates and mesoporous solids, in their neutral, acidic or exchanged forms with metal ions, as well as modifications and / or mixtures of these materials with non-toxic metal ions or with oxides of these metals, such as tobacco additives to drastically reduce the amount of toxic and / or carcinogenic compounds that are generated when smoking and that appear in the main and secondary currents of tobacco smoke.
  • tobacco additives also reduce the fraction of condensable and non-condensable products that are generated in the combustion of tobacco without substantially altering its organoleptic characteristics, while the amount of solid residue (coke) in the ashes increases.
  • an object of the present invention refers to the use of additives for the direct elimination of a large part of these undesirable compounds from the gases and condensable products that are part of the tobacco smoke in directly consumable products (packages of conventional cigarettes, cigars, cigars, etc.), as well as a kit comprising separate containers for tobacco and additive. Said kit or dispenser can be used preferentially for those forms that require prior manipulation to obtain the article that can be smoked (rolling tobacco-RYO-, tobacco for filling tube-MYO-, pipe tobacco, etc.).
  • the additives used in the present invention have the morphological and structural characteristics typical of molecular sieves.
  • the USY zeolite has smaller Si / Al ratios and larger pore size than the ZSM-5 zeolite, and a structure characterized by bulky, essentially spherical internal cavities ("supercages") connected tetrahedrally through the pore openings , defined by rings of 12 oxygen atoms (12-member rings or 12MR) [Boxiong S., Chunfei W., Rui W., Binbin G. and Cai L., "Pyrolysis of scrap tires with zeolite USY", Journal of Hazardous Materials, in Press (2006)].
  • the ZSM-5 zeolite features a 10-member ring system (10MR), with a three-dimensional network of interconnected sinusoidal and circular channels, with pore sizes of 5.3x5.6 ⁇ and 5.1x5.5 ⁇ and intersections between the channels of 0.9 nm [N. Kumar, "Synthesis, modification and application of high silica catalysts in the transformation of light hydrocarbons to aromatic hydrocarbons", N. Kumar, Ph. D. thesis, Abo Akademi University, ⁇ bo / Turku, Finland, 1996].
  • BETA zeolite has a structure with 12MR type holes [JM Newsam, M. MJ. Treacy, WT. Koetsier, Proc. R. Soc. Lond. A, 420 (1988), 375].
  • This zeolite has a highly disordered structure, consisting of the random growth of polymorphs A and B, with tetragonal and monoclinic symmetries, respectively, usually in an approximate ratio of 60:40 [Q. Li, A. Navrotsky, F. Rey, A. Corma, Micropor. Mater., 59 (2003), 177]. It has two types of straight channels, in the directions / a / and IbI with diameters of 7.3 x 6.8 ⁇ for the tetragonal system and 7.3 * 6.0 A for the monoclinic system, and a sinusoidal channel in the IcI direction, 5.5 * 5.5 ⁇ The intersection of these channels forms a highly accessible pore system [JC Jansen, EJ.
  • the MCM-22 material [MK Rubin, P. Chu, US patent 4954325, 1990] is a relatively recent aluminosilicate, which was first obtained by Rubin et al. in 1990.
  • the structure of the MCM-22 consists in two independent pore systems, one of them composed of two-dimensional channels with 10-member pore openings (10MR) and the other consists of a super-box system with 12-member openings (12MR). Due to this porous structure, the MCM-22 combines the behavior of both systems, 10MR and 12MR 1 that confer some unusual catalytic properties.
  • the MCM-41 material is also a mesoporous aluminosilicate, which was first synthesized by Beck et al. in 1992 [JS Beck, JC Vartuli, GJ Kennedy and CT Kresge, SE Schramm, Chem. Mater., 6 (1994), 1816].
  • the MCM-41 has a hexagonal arrangement of mesopores, with a highly regular pore system, of variable size between 1.5 and 10 nm, which confers a considerably high surface area. This property is of great importance for the reduction of the harmful effects of tobacco.
  • the non-acidic forms when used as tobacco additives in the manner described in this application, provide excellent results from the point of view of the reduction of the toxic and dangerous products present in tobacco smoke, since they avoid the negative effects associated with the possible hydrolysis of lignocellulosic materials present in tobacco, which can occur when acid forms are used in environments with a high degree of humidity.
  • Table 1 shows the chemical and structural characteristics of some of the additives studied in this application, as a representative example of this type of materials. For all of them, the Si / Al ratio, the external surface and other characteristics can be modified within relatively wide intervals for different purposes, without thereby substantially modifying the behavior and general properties of the material.
  • Another important aspect is the size and shape of the catalyst particles. Small particle sizes improve contact with the solid and the evolved gases, but can more easily pass through the filters or the tobacco bed and pass into the lungs, so this aspect must be taken into account and this possibility reduced or eliminated. In any case it is very important that these types of additives do not contain compounds or toxic elements or presenting a fibrous morphology that could be harmful to health.
  • the materials used have particle sizes of the order of 0.1-2 ⁇ m which, in many cases, are forming aggregates of 20-30 ⁇ m. In the experimental conditions used in the examples described in this invention, the materials described, with these particle dimensions, allow to obtain highly satisfactory results from the point of view of the reduction of toxic compounds present in tobacco smoke, without observing a significant presence of particles capable of passing through cigarette filters.
  • Example 1 Comparative study of cigarette smoking with and without additive.
  • Cigarette smoking conditions and analysis of the products generated
  • Cigarettes are conditioned at room temperature and 60% relative humidity, keeping them in a desiccator provided with a saturated solution of sodium nitrite, at least for 48 hours before being smoked.
  • Temperataura injector 100 0 C
  • Injected volume 150 ⁇ L •
  • the condensable compounds (extracted with 2-propanol) are analyzed by GC with mass spectrometry detector (GC-MS), using an HP-5MS column and the following conditions:
  • Carrier gas He Temperataura injector: 5O 0 C
  • cigarettes were prepared in which the tobacco fiber was mixed manually with the catalyst, aiding with a few drops of ethanol. This operation was performed on a sieve that allowed to separate the catalyst that was not adhered to tobacco, so that a percentage of catalyst was obtained in the nominal mixtures, which corresponded to the amount of initially heavy catalyst, and a real one, which was the finally retained by the sample.
  • Other agents that are alternative to ethanol that can be used to aid in the tobacco-catalyst mixing process are water, glycerin and other similar solvents, which do not affect the properties of tobacco and evaporate with relative ease. Notwithstanding the foregoing, mixtures can also be carried out satisfactorily without using any of these substances.
  • Cigarettes were prepared using the procedure described in "cigarette preparation conditions" and using the additives indicated below:
  • Cigarettes were prepared using the procedure described in "cigarette preparation conditions" and using the nominal concentrations (weight percentage) indicated below:
  • Tables 2, 3 and 4 present the results obtained when smoking cigarettes using the conditions of preparation of cigarettes, smoking conditions and analysis of the products generated and the examples of group a), corresponding to different tobacco mixtures -additive.
  • the values obtained for: - CO and CO 2 , in mg of compound / cigarette are shown
  • TPM total particulate matter
  • Tables 2 to 4 show that the proposed additives, in their acidic, sodium and iron-exchanged forms, as well as their mixtures with oxides of Ce and Zr, when mixed with tobacco in the proportions described, provide a significant reduction of the amount of toxic compounds that appear in tobacco smoke.
  • This reduction implies a decrease in the potential negative effects caused by tobacco smoke in smokers and passive smokers, without causing appreciable changes in the organoleptic properties and taste and consistency of tobacco, and without apparent generation of other undesirable compounds.
  • the toxic compounds are reduced, but in general, the total amount of gases and liquids that are formed when smoking the cigarette (total particulate matter, TPM, plus the liquids retained in the filter), while increasing the solid residue along with the ashes.
  • the additives are retained in the ashes or in the tobacco that has not been smoked.
  • the use of these additives causes a significant reduction of the toxic substances present in tobacco smoke, such as CO, CO 2 , nicotine, etc., as well as the total amount of liquid and gaseous products.
  • the results obtained for the production of CO and CO2 expressed as mg of compound / cigarette, to a cigarette reference to mixtures with some of the additives which may be considered representative of the rest is.
  • Na-MCM-41 when used as an additive, the following reductions were observed with respect to the reference cigarette: CO 2 , 81.4%; CO, 84.4%; TPM, 97.1%; glycerin, 32.5%; neofitadian, 72.1%; nicotine, 79.1%; acetone, 57.5%; acetaldehyde, 70.3%; hydroquinone, 79.7%, propionaldehyde, 49.3%; acrolein, 69.1%; crotonaldehyde, 62.2%; isobutyraldehyde, 66.7%, furan, 63.8% and benzene, 62.2%.
  • All the mixtures described can also be prepared by using fast mixers, fluidized or entrained beds and any other type of equipment that favors the mixing between the tobacco fiber and the additive. Sieves can also be used to separate and recirculate the additive that had not been fixed on the tobacco fibers.
  • a dispenser can be used that provides the adequate amount of catalyst for the preparation of blond tobacco , black, leaf, sting, rolling tobacco, pipe tobacco and any Another item that can be smoked.
  • This dispenser can consist of a blister pack, where each cavity contains the selected quantity (between 5 and 70 mg, so that it is obtained between 0.5 and 7% with respect to tobacco, which will usually be consumed in portions of about 1 g of tobacco ), individual capsules containing said amounts, a container that includes a calibrated or graduated teaspoon or any other calibrated dispenser.
  • the ready-to-smoke product MYO, RYO, pipe or other forms
  • the content of the calibrated dispenser is poured onto the tobacco fiber and carefully mixed with the hand. This procedure guarantees excellent results, as good as those presented in Tables 2 to 4.
  • Table 3 TPM obtained by smoking tobacco under controlled conditions.
  • Table 4. Generation (mg compound / cigarette) of different toxic compounds present in the gases and in the condensable products retained in the trap after the filter when smoking tobacco under controlled conditions.
PCT/ES2007/000628 2006-11-07 2007-11-05 Mezclas tabaco-catalizador para la reducción de los compuestos tóxicos presentes en el humo del tabaco WO2008056011A1 (es)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT07823034T ATE547015T1 (de) 2006-11-07 2007-11-05 Tabak-katalysator-mischungen zum senken des anteils toxischer verbindungen in tabakrauch
ES07823034T ES2383359T3 (es) 2006-11-07 2007-11-05 Mezclas tabaco-catalizador par la reducción de los compuestos tóxicos presentes en el humo del tabaco
EP07823034A EP2092838B1 (en) 2006-11-07 2007-11-05 Tobacco/catalyst mixtures for reducing toxic compounds in tobacco smoke
DK07823034.9T DK2092838T3 (da) 2006-11-07 2007-11-05 Tobaks-/katalysatorblandinger til reduktion af toksiske forbindelser i tobaksrøg

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ES200602816A ES2301392B1 (es) 2006-11-07 2006-11-07 Mezclas tabaco-catalizador para la reduccion de los compuestos toxicos presentes en el humo del tabaco.
ESP200602816 2006-11-07

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EP (1) EP2092838B1 (ja)
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WO (1) WO2008056011A1 (ja)

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ES2482490B1 (es) * 2012-12-21 2015-05-19 Universidad De Alicante Aluminosilicato SAB-15 como aditivo para la reducción de los compuestos tóxicos y cancerígenos presentes en el humo del tabaco
ES2543851B1 (es) * 2013-12-23 2016-08-08 Universidad De Alicante Inclusión de catalizadores en formulaciones de tabaco reconstituido para la reducción de la emisión de productos tóxicos
GB201412752D0 (en) 2014-07-17 2014-09-03 Nicoventures Holdings Ltd Electronic vapour provision system

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