WO2020248207A1 - Réduction de gaz toxiques par des effets de catalyse de combustion du tabac - Google Patents

Réduction de gaz toxiques par des effets de catalyse de combustion du tabac Download PDF

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Publication number
WO2020248207A1
WO2020248207A1 PCT/CN2019/091204 CN2019091204W WO2020248207A1 WO 2020248207 A1 WO2020248207 A1 WO 2020248207A1 CN 2019091204 W CN2019091204 W CN 2019091204W WO 2020248207 A1 WO2020248207 A1 WO 2020248207A1
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WO
WIPO (PCT)
Prior art keywords
catalyst
graphene
tobacco
cigarette
smoke
Prior art date
Application number
PCT/CN2019/091204
Other languages
English (en)
Inventor
Mário Jorge César Dos SANTOS
Estelina Lora Da SILVA
Tiago André César Dos SANTOS
João Pedro PINTO
Marco Molinari
Tao Yang
Original Assignee
Suzhou Qian Xun New Energy Sci&Tech Co. 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 Suzhou Qian Xun New Energy Sci&Tech Co. Ltd filed Critical Suzhou Qian Xun New Energy Sci&Tech Co. Ltd
Priority to PCT/CN2019/091204 priority Critical patent/WO2020248207A1/fr
Publication of WO2020248207A1 publication Critical patent/WO2020248207A1/fr

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/287—Treatment of tobacco products or tobacco substitutes by chemical substances by inorganic substances only
    • A24B15/288—Catalysts or catalytic material, e.g. included in the wrapping material
    • 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
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/74—Iron group metals
    • B01J23/745—Iron

Definitions

  • the present disclosure relates to the development of innovative catalysts applied to the tobacco product, commercial cigarette filters, and mouthpieces for cigarettes or pipes and refers to the use of catalysis for the reduction of noxious gases released during combustion of tobacco.
  • the proposed catalyst i.e. the graphene-based materials, possesses catalytic properties which are very well documented, being particularly effective for the enhancement of catalytic reactions, and for the decrease of toxic gases such as NO x , SO x , and CO.
  • toxic gases such as NO x , SO x , and CO.
  • CO Carbon monoxide
  • the new electronic cigarettes e-cigrettes
  • IQOS Philip Morris International
  • IQOS Philip Morris International
  • glo British American Tobacco
  • tobacco heating products https: //www. bat. com/]
  • tobacco-heated products With these devices tobacco is heated at low temperatures in order to release nicotine-containing aerosol with tobacco flavors, without inducing combustion reactions and smoke. Because the tobacco is heated and not burned, the levels of toxic chemicals are significantly reduced compared to those found in cigarette smoke.
  • the present proposal assumes a catalytic system comprising a graphene-based material, applied to conventional cigarettes, without the need to replace these by heated-tobacco products (i.e. e-cigarette) .
  • a catalytic system comprising a graphene-based material, applied to conventional cigarettes, without the need to replace these by heated-tobacco products (i.e. e-cigarette) .
  • e-cigarette heated-tobacco products
  • Gaphene itself is a well-known heterogeneous catalyst and is used industrially in selective oxidation, chlorination, dechlorination, and other reactions.
  • the main goal of the present invention is to promote the reduction of inhalation of toxic gases released during the combustion process of tobacco burning, mainly NO X , SO x and CO. This is achieved by introducing (or envolving) a graphene-based catalytic system into the tobacco product, filter of commercial cigarettes or mouthpieces of pipes and cigarettes.
  • the present invention is of considerable importance for the public health, the enviroment and the tobacco industry.
  • the selective catalyst does not participate in the reaction as a product or reactant it will therefore not affect the fragrance neither the flavours.
  • the presence of the catalyst in the combustion reaction will mainly enhance the rate of the reaction, ensuring the “transformation” of toxic inorganic gases into non-toxic ( “clean” ) gases, ie: O 2 , N 2 , CO 2 .
  • the catalyst will not produce any significant effect on complex organic molecules (selective catalyst) , such as nicotine, because of the nature and design of the proposed catalysis.
  • the selective catalyst composite will act strongly on the oxidative reaction of gases, free radicals, and inorganic toxic molecules (NO x , SO x , etc. ) .
  • a catalyst increases the rate of reaction (i.e. the kinetics) , without changing the respective thermodynamics nor the chemical composition.
  • the proposed catalyst induces a selective catalytic reduction of NO x and SO x and oxidation of CO to form non-toxic chemical constituents as final products:
  • the proposed catalyst is to be formed by a composite, composed of low cost materials, such as graphene-based materials absorbed/coated with a conventional oxide catalyst matrix/surface, such as hematite (Fe 2 O 3 ) , magnetite (Fe 3 O 4 ) or hydroxyapatite (HaP) .
  • a conventional oxide catalyst matrix/surface such as hematite (Fe 2 O 3 ) , magnetite (Fe 3 O 4 ) or hydroxyapatite (HaP) .
  • oxides Fe 2 O 3 , Fe 3 O 4 , Al 2 O 3 , ZnO, etc.
  • oxidation-reduction reactions may occur on the metal-oxides during combustion due to air for chemical looping combustion, i.e the oxidized magnetite (Fe 3 O 4 ) is reduced to hematite (Fe 2 O 3 ) , by using continuous stream of CO resulting from tobacco combustion with N 2 balance.
  • oxidized magnetite Fe 3 O 4
  • hematite Fe 2 O 3
  • the catalyst composite can be introduced directly onto the assembly line, along with the filling of each cigarette. It may be dispersed with the tobacco product. Otherwise, the catalyst may also be deposited during the production process of the filter, before introducing the filter inside the cigarette, so that the catalyst can be startegically placed inside the filter.
  • Table 1 Maximum values of released gases produced during cigarette combustion.
  • the catalyst was homogenously mixed with the tobacco in the cigarette.
  • the measured sample flow rate was 0.30 L/min.
  • Cigarrette with 0.40 g of catalyst (Fe 2 O 3 ) , homogenously distributed through the tobacco
  • Cigarrette with 0.10 g of catalyst (Fe 2 O 3 ) , placed between filter and tobacco
  • Cigarrette with 0.14 g catalyst (composite graphene/Fe 2 O 3 ) , placed between filter and tobacco
  • FIG. 1 is an illustration of the different distributions of placing the catalyst inside the cigarette.
  • FIG. 2 is the multiparametric gas analyzer, Horiba PG-250 SRM, employed for the laboratory tests for the content of the different types of exhaust gas from the burning of cigarette.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Catalysts (AREA)

Abstract

La présente invention a pour but d'atténuer les effets nocifs du gaz toxique inhalé pendant la consommation de tabac au moyen d'un système présentant des performances de filtration et de catalyse exceptionnelles envers les oxydes d'azote (NOx), les oxydes de soufre (SOx) et le monoxyde de carbone (CO). Le système est constitué d'un matériau composite formé par un oxyde céramique et des matériaux à base de graphène absorbés/revêtus par la matrice/surface de catalyseur d'oxyde. L'adsorption du matériau à base de graphène améliore l'activité catalytique de l'oxyde. D'autres matériaux potentiels présentant des performances catalytiques reconnues et devant être employés sont d'autres carbocatalyseurs, tels que des nanotubes de carbone. Le matériau catalyseur peut être mélangé dans le produit à base de tabac ou appliqué à l'intérieur du filtre de cigarette ou des embouts buccaux de cigarettes et de pipes à fumer, ou même être remplacé par le papier de cigarette lui-même, permettant une réduction considérable des gaz toxiques qui seraient autrement inhalés par le fumeur.
PCT/CN2019/091204 2019-06-14 2019-06-14 Réduction de gaz toxiques par des effets de catalyse de combustion du tabac WO2020248207A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/091204 WO2020248207A1 (fr) 2019-06-14 2019-06-14 Réduction de gaz toxiques par des effets de catalyse de combustion du tabac

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/091204 WO2020248207A1 (fr) 2019-06-14 2019-06-14 Réduction de gaz toxiques par des effets de catalyse de combustion du tabac

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WO2020248207A1 true WO2020248207A1 (fr) 2020-12-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112812567A (zh) * 2021-01-28 2021-05-18 中南大学 一种碳纳米管/聚二甲基硅氧烷导电复合材料的制备方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101941842A (zh) * 2010-10-11 2011-01-12 东华大学 石墨烯负载四氧化三铁磁性纳米颗粒复合材料的制备方法
WO2012047346A1 (fr) * 2010-10-06 2012-04-12 Celanese Acetate Llc Filtres à fumée pour dispositifs pour fumeurs comprenant des masses poreuses ayant des nanoparticules actives et des particules de liant
CN102553593A (zh) * 2012-01-10 2012-07-11 常州大学 磁性纳米四氧化三铁-石墨烯复合催化剂的制备方法
CN104907070A (zh) * 2015-04-09 2015-09-16 宁波西博恩新材料科技有限公司 一种α-Fe2O3/石墨烯纳米复合材料表面增强拉曼散射基底与光催化剂及其制备方法
CN107541255A (zh) * 2016-06-23 2018-01-05 江阴市五洋化工有限公司 一种氧化铝复合石墨烯载体加氢催化剂脱芳烃生产异庚烷溶剂油的方法
CN109476488A (zh) * 2016-04-29 2019-03-15 对数9物质科学私人有限公司 一种石墨烯基烟草烟雾过滤器及一种合成石墨烯复合物的方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012047346A1 (fr) * 2010-10-06 2012-04-12 Celanese Acetate Llc Filtres à fumée pour dispositifs pour fumeurs comprenant des masses poreuses ayant des nanoparticules actives et des particules de liant
CN101941842A (zh) * 2010-10-11 2011-01-12 东华大学 石墨烯负载四氧化三铁磁性纳米颗粒复合材料的制备方法
CN102553593A (zh) * 2012-01-10 2012-07-11 常州大学 磁性纳米四氧化三铁-石墨烯复合催化剂的制备方法
CN104907070A (zh) * 2015-04-09 2015-09-16 宁波西博恩新材料科技有限公司 一种α-Fe2O3/石墨烯纳米复合材料表面增强拉曼散射基底与光催化剂及其制备方法
CN109476488A (zh) * 2016-04-29 2019-03-15 对数9物质科学私人有限公司 一种石墨烯基烟草烟雾过滤器及一种合成石墨烯复合物的方法
CN107541255A (zh) * 2016-06-23 2018-01-05 江阴市五洋化工有限公司 一种氧化铝复合石墨烯载体加氢催化剂脱芳烃生产异庚烷溶剂油的方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112812567A (zh) * 2021-01-28 2021-05-18 中南大学 一种碳纳米管/聚二甲基硅氧烷导电复合材料的制备方法

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