CN101692934A - Additive for lowering harmful constituents in cigarette flue gas and cigarette thereof - Google Patents

Additive for lowering harmful constituents in cigarette flue gas and cigarette thereof Download PDF

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Publication number
CN101692934A
CN101692934A CN200910308650A CN200910308650A CN101692934A CN 101692934 A CN101692934 A CN 101692934A CN 200910308650 A CN200910308650 A CN 200910308650A CN 200910308650 A CN200910308650 A CN 200910308650A CN 101692934 A CN101692934 A CN 101692934A
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China
Prior art keywords
cigarette
additive
flue gas
cnt
harmful components
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Pending
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CN200910308650A
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Chinese (zh)
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文建辉
钟科军
蒋健晖
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China Tobacco Hunan Industrial Co Ltd
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China Tobacco Hunan Industrial Co Ltd
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Priority to CN200910308650A priority Critical patent/CN101692934A/en
Publication of CN101692934A publication Critical patent/CN101692934A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a cigarette additive and cigarette prepared by the additive. The additive can lower the tar contents in cigarette flue gas and can selectively absorb harmful substances such as polycyclic aromatics, phenols and the like in cigarette flue gas. The additive is carbon nanometer pipe preparation dispersed in water solution of surface active agent. The preparation is taken as cigarette cut tobacco additive and is sprayed on tobacco leaves in the cigarette production material feeding technique process according to 1 to 25% of the weight of the cut tobacco, and carbon nanometer pipes are evenly and dispersedly absorbed on the surface of the cut tobacco after silk drying processing. The additive can remove 6.2-38.8% of polycyclic aromatics such as Benzo(a)pyrene and the like and 3.0 to 28.3% of carbolic acid and catechol in cigarette main flow flue gas, and also can lower the tar contents in flue gas for 3.4 to 20.4%, and the original color and flavor of cut tobacco are not changed basically.

Description

A kind of additive and cigarette thereof that reduces harmful components in the cigarette smoke
Technical field
The invention belongs to the cigarette manufacture field, be specifically related to a kind of cigarette additive that reduces harmful components in the cigarette smoke and by the cigarette of its making.
Technical background
Present stage, tobacco business was faced with the multiple pressure of The World Health Organization (WHO) and " Tobacco Control framework treaty ", on the other hand, along with improving constantly of living standard and quality of life, contradiction between smoking and the health becomes increasingly conspicuous, requirement to the cigarette security is also more and more higher, reduce the tar content in the cigarette smoke, the harmful components that especially reduce in the flue gas are vital tasks that tobacco business faces.
Cigarette burning is a very complicated reaction, there are multiple harmful components in the main flume with carcinogenic or syncarcinogenesis, with 3,4-benzo [a] pyrene is the polycyclic aromatic hydrocarbon of representative and is that the aldehydes matter of representative is two wherein important class harmful components with phenol, catechol.Polycyclic aromatic hydrocarbon (PAHs) is tobacco unburnt product under the high temperature anoxia condition, the organic matter fragment that various organic matter pyrolysis are generated, form multiple polycyclic aromatic hydrocarbon through complicated polymerization process, wherein nearly 30 kinds have carcinogenicity, 3, the carcinogenicity of 4-benzo [a] pyrene is the highest, secondly is dibenzo [a, h] anthracene, benzo [b] fluoranthene etc.Phenolic compound in the cigarette smoke is mainly derived from the cracking of the polyphenols in the tobacco leaf, and catechol has cocarcinogenesis in the flue gas, and aldehydes matter has more intense spread effect to respiratory mucosa, influences the suction quality of cigarette.Therefore, in reducing cigarette smoke, in the tar content, optionally reduce the harmful components in the cigarette smoke, improve the security of sucking of cigarette, significant to the development of tobacco business.
CNT is a newcomer of carbon crystal family, and its radial dimension is little, the external diameter of pipe generally in several nanometers to tens nanometers, the internal diameter of pipe is littler.And the length of CNT generally several microns to the hundreds of micron, length and diameter are bigger than very, can reach 10 3-10 6Therefore, CNT is considered to a kind of typical monodimension nanometer material.The one dimension fibre structure of this uniqueness of CNT, nano level diameter, high effective ratio area and high draw ratio, and chemical property is stable, makes it become a kind of good adsorption material.CNT be adsorbed with two kinds: physical absorption and chemisorbed.Active force in the physical absorption mainly is the Van der Waals force between nanotube and the adsorbate.There are some researches show (J Am Chem Soc, 2001,123:2058-2059), carbon nano tube surface is the polyene structure that is rich in pi-electron, this special structure makes and exists stronger π-pi-conjugated effect between CNT and the phenyl ring.This π-pi-conjugated effect makes CNT to the harmful substance that contains phenyl ring in the flue gas such as polycyclic aromatic hydrocarbons such as BaP, benzanthracene, aldehydes matter more intense chemisorption be arranged, in the tar content, CNT can also reach the purpose of optionally removing harmful components such as polycyclic aromatic hydrocarbon and aldehydes matter in the flue gas in reducing cigarette smoke.
Summary of the invention
The purpose of this invention is to provide a kind of cigarette additive that reduces Polycyclic Aromatic Hydrocarbons in Cigarette Smoke and aldehydes matter content, this additive energy highly selective reduces the content of Polycyclic Aromatic Hydrocarbons in Cigarette Smoke and aldehydes matter.
Second purpose of the present invention provides the cigarette of above-mentioned additive preparation.
A kind of cigarette additive that reduces harmful components in the cigarette mainstream flue gas: be that CNT is scattered in resulting suspension in the aqueous surfactant solution.
CNT is one or both in SWCN, the multi-walled carbon nano-tubes; Preferred multi-walled carbon nano-tubes.Length of carbon nanotube diameter ratio is 10 3-10 6
Described surfactant is any or several compound in lauryl sodium sulfate, neopelex, softex kw, DTAB, 4-vinylpridine, methyl-sulfoxide, polyethylene glycol, empgen BB, Qu Latong X-30, the PVP.
The concentration of described aqueous surfactant solution is 0.04-0.4mol/l, and the concentration of CNT in suspension is 5-40mg/ml.
The cigarette of described cigarette additive preparation: be that cigarette additive is added in the flavoring essence that is formed by other cigarette additive, propane diols, the allotment of second alcohol and water, be sprayed on the tobacco leaf, perhaps be sprayed on additive on the tobacco leaf separately; Then through leaves moisting, chopping, baking silk, perfuming, roll, technology of the package, the finished cigarettes that makes, described cigarette additive are that CNT is scattered in resulting suspension in the aqueous surfactant solution.
The addition of described CNT additive is the 1-25% of pipe tobacco weight, preferred 15-20%.
The preparation method of CNT cigarette additive of the present invention is as follows: a kind of cigarette additive that reduces Polycyclic Aromatic Hydrocarbons in Cigarette Smoke and aldehydes matter content, at first by conventional method synthesizing carbon nanotubes (comprising SWCN and multi-walled carbon nano-tubes) and carry out purification process, prepare surfactant solution then, surfactant concentration is 0.04-0.4mol/l in the solution, and surfactant is a lauryl sodium sulfate, neopelex, softex kw, DTAB, 4-vinylpridine, empgen BB, Qu Latong X-30, a kind of in the PVP or the compound of several surfactants wherein.CNT is added in the surfactant solution, and addition is 5-40mg/ml, makes by ultrasonic that its formation is uniformly dispersed, stable suspension, promptly obtains CNT cigarette additive of the present invention.
The cigarette preparation method of low benzo [a] pyrene, low phenol content in the main flume of the present invention, be in the cigarette charging technical process, CNT cigarette additive of the present invention is added in the flavoring essence that is formed by allotments such as cigarette additive, propane diols, ethanol, water, be sprayed on the tobacco leaf, also this additive can be sprayed on the tobacco leaf separately.The addition of cigarette additive of the present invention in tobacco leaf is: the addition of CNT additive is the 1-25% of tobacco leaf weight, preferred 15-20%.Then through leaves moisting, chopping, baking silk, perfuming, roll, technology such as packing, make finished cigarettes.
Beneficial effect of the present invention is as follows:
1) finely dispersed even carbon nanotube is introduced in the cigarette shreds, after making cigarette product, be attached on the pipe tobacco to even carbon nanotube, the main flume that fire end produces during cigarette smoking is sucked out by filter tip through rear portion unburned pipe tobacco, make CNT a long absorption distance be arranged, can give full play to the absorption property of CNT excellence harmful substance in the flue gas.
2) because carbon nano tube surface is the polyene structure that is rich in pi-electron, this special structure makes and exists stronger π-pi-conjugated effect between CNT and the phenyl ring.This π-pi-conjugated effect makes CNT in the tar content, can optionally remove the harmful substance that contains phenyl ring such as condensed-nuclei aromatics such as BaP, benzanthracene, aldehydes matter etc. in the flue gas in reducing cigarette smoke.
3) because length of carbon nanotube tens to the hundreds of micron, has very big draw ratio, can be attached to well on the pipe tobacco, add the effect of acetate fiber filter tip, CNT can not be inhaled into human body, can guarantee the security of sucking of cigarette.
4) CNT at high temperature character can not change, under the temperature of the inner several Baidu of burning awl, still can play a role, and CNT can not influence the original jealous of cigarette.
5) additive preparation technology of the present invention is simple, adds convenient and suitable industrial production requirement.
The specific embodiment
Following examples are intended to more specifically describe the present invention rather than limitation of the invention further, and the present invention can implement by the described arbitrary mode of summary of the invention.
Embodiment 1:
Be 0.04-0.4mol/l preparation aqueous surfactant solution by surfactant total concentration in the solution earlier, (length of carbon nanotube diameter ratio is 10 with CNT by the 5-40mg/ml addition then 3-10 6) add in the aqueous surfactant solution, ultrasonicly make that its formation is uniformly dispersed, stable suspension, obtain the additive finished product.
Embodiment 2:
Prepare the sodium dodecyl sulfate solution of 0.1mol/l earlier, the amount of pressing 10.0mg/ml adds multi-walled carbon nano-tubes, ultrasonic it is uniformly dispersed, addition by the CNT additive is 15% of a tobacco leaf weight, according to tobacco leaf weight a certain amount of multi-walled carbon nano-tubes/sodium dodecyl sulfate solution is mixed with the flavoring essence for preparing in advance, be sprayed on the tobacco leaf.Be rolled into and light after cigarette props up, analyze the target chemical composition in the main flume, prop up with the contrast cigarette and compare, tar reduces by 3.9%, and benzo [a] pyrene reduces by 8.2%, and phenol reduces by 3.8%, and catechol reduces by 4.7%.
Embodiment 3:
Prepare the neopelex solution of 0.1mol/l earlier, the amount of pressing 10.0mg/ml adds multi-walled carbon nano-tubes, ultrasonic it is uniformly dispersed, addition by the CNT additive is 15% of a tobacco leaf weight, according to tobacco leaf weight a certain amount of multi-walled carbon nano-tubes/neopelex solution is mixed with the flavoring essence for preparing in advance, be sprayed on the tobacco leaf.Be rolled into and light after cigarette props up, analyze the target chemical composition in the main flume, prop up with the contrast cigarette and compare, tar reduces by 3.4%, and benzo [a] pyrene reduces by 6.2%, and phenol reduces by 3.0%, and catechol reduces by 3.5%.
Embodiment 4:
Prepare the neopelex solution of 0.2mol/l earlier, the amount of pressing 15.0mg/ml adds multi-walled carbon nano-tubes, ultrasonic it is uniformly dispersed, addition by the CNT additive is 18% of a tobacco leaf weight, according to tobacco leaf weight a certain amount of multi-walled carbon nano-tubes/neopelex solution is mixed with the flavoring essence for preparing in advance, be sprayed on the tobacco leaf.Be rolled into and light after cigarette props up, analyze the target chemical composition in the main flume, prop up with the contrast cigarette and compare, tar reduces by 7.6%, and benzo [a] pyrene reduces by 12.1%, and phenol reduces by 5.3%, and catechol reduces by 6.5%.
Embodiment 5:
Prepare the neopelex solution of 0.2mol/l earlier, the amount of pressing 25.0mg/ml adds multi-walled carbon nano-tubes, ultrasonic it is uniformly dispersed, addition by the CNT additive is 18% of a tobacco leaf weight, according to tobacco leaf weight a certain amount of multi-walled carbon nano-tubes/neopelex solution is mixed with the flavoring essence for preparing in advance, be sprayed on the tobacco leaf.Be rolled into and light after cigarette props up, analyze the target chemical composition in the main flume, prop up with the contrast cigarette and compare, tar reduces by 12.8%, and benzo [a] pyrene reduces by 21.1%, and phenol reduces by 9.7%, and catechol reduces by 12.3%.
Embodiment 6:
Prepare the neopelex solution of 0.3mol/l earlier, the amount of pressing 35.0mg/ml adds multi-walled carbon nano-tubes, ultrasonic it is uniformly dispersed, addition by the CNT additive is 15% of a tobacco leaf weight, according to tobacco leaf weight with a certain amount of multi-walled carbon nano-tubes/neopelex spray solution on tobacco leaf.Be rolled into and light after cigarette props up, analyze the target chemical composition in the main flume, prop up with the contrast cigarette and compare, tar reduces by 18.8%, and benzo [a] pyrene reduces by 35.7%, and phenol reduces by 18.2%, and catechol reduces by 22.9%.
Embodiment 7:
Prepare neopelex/PVP solution of 0.4mol/l earlier, the amount of pressing 40.0mg/ml adds multi-walled carbon nano-tubes, ultrasonic it is uniformly dispersed, addition by the CNT additive is 15% of a tobacco leaf weight, according to tobacco leaf weight with a certain amount of multi-walled carbon nano-tubes/neopelex/PVP spray solution on tobacco leaf.Be rolled into and light after cigarette props up, analyze the target chemical composition in the main flume, prop up with the contrast cigarette and compare, tar reduces by 20.4%, and benzo [a] pyrene reduces by 38.8%, and phenol reduces by 25.1%, and catechol reduces by 28.3%.
Embodiment 8:
Prepare lauryl sodium sulfate/polyglycol solution of 0.4mol/l earlier, the amount of pressing 40.0mg/ml adds multi-walled carbon nano-tubes, ultrasonic it is uniformly dispersed, addition by the CNT additive is 15% of a tobacco leaf weight, according to tobacco leaf weight a certain amount of multi-walled carbon nano-tubes/lauryl sodium sulfate/polyglycol solution is sprayed on the tobacco leaf.Be rolled into and light after cigarette props up, analyze the target chemical composition in the main flume, prop up with the contrast cigarette and compare, tar reduces by 19.1%, and benzo [a] pyrene reduces by 33.5%, and phenol reduces by 21.4%, and catechol reduces by 24.9%.
Embodiment 9:
Prepare lauryl sodium sulfate/4-vinylpridine solution of 0.4mol/l earlier, the amount of pressing 40.0mg/ml adds multi-walled carbon nano-tubes, ultrasonic it is uniformly dispersed, addition by the CNT additive is 15% of a tobacco leaf weight, according to tobacco leaf weight with a certain amount of multi-walled carbon nano-tubes/neopelex/4-vinylpridine spray solution on tobacco leaf.Be rolled into and light after cigarette props up, analyze the target chemical composition in the main flume, prop up with the contrast cigarette and compare, tar reduces by 19.7%, and benzo [a] pyrene reduces by 32.3%, and phenol reduces by 23.5%, and catechol reduces by 24.2%.
Embodiment 10:
Prepare neopelex/Qu Latong X-30 solution of 0.4mol/l earlier, the amount of pressing 40.0mg/ml adds multi-walled carbon nano-tubes, ultrasonic it is uniformly dispersed, addition by the CNT additive is 15% of a tobacco leaf weight, according to tobacco leaf weight with a certain amount of multi-walled carbon nano-tubes/neopelex/Qu Latong X-30 spray solution on tobacco leaf.Be rolled into and light after cigarette props up, analyze the target chemical composition in the main flume, prop up with the contrast cigarette and compare, tar reduces by 21.1%, and benzo [a] pyrene reduces by 30.9%, and phenol reduces by 21.7%, and catechol reduces by 26.0%.
Embodiment 11:
Prepare lauryl sodium sulfate/polyglycol solution of 0.4mol/l earlier, amount in 40.0mg/ml adds multi-walled carbon nano-tubes and SWCN mixture (the two mixes in 1: 1 ratio), ultrasonic it is uniformly dispersed, addition by the CNT additive is 20% of a tobacco leaf weight, according to tobacco leaf weight with a certain amount of multi-walled carbon nano-tubes/neopelex/PVP spray solution on tobacco leaf.Be rolled into and light after cigarette props up, analyze the target chemical composition in the main flume, prop up with the contrast cigarette and compare, tar reduces by 19.8%, and benzo [a] pyrene reduces by 36.5%, and phenol reduces by 25.1%, and catechol reduces by 27.9%.

Claims (12)

1. a cigarette additive that reduces harmful components in the cigarette mainstream flue gas is characterized in that, described cigarette additive is that CNT is scattered in resulting suspension in the aqueous surfactant solution.
2. the cigarette additive of harmful components is characterized in that in the reduction cigarette mainstream flue gas according to claim 1, and described CNT is one or both in SWCN, the multi-walled carbon nano-tubes, and the length of carbon nanotube diameter is than being 103-106.
3. the cigarette additive of harmful components is characterized in that in the reduction cigarette mainstream flue gas according to claim 1 and 2, and described CNT is a multi-walled carbon nano-tubes.
4. the cigarette additive of harmful components in the reduction cigarette mainstream flue gas according to claim 1, it is characterized in that described surfactant is any or several compound in lauryl sodium sulfate, neopelex, softex kw, DTAB, 4-vinylpridine, methyl-sulfoxide, polyethylene glycol, empgen BB, Qu Latong X-30, the PVP.
5. according to the cigarette additive of harmful components in claim 1 or the 4 described reduction cigarette mainstream flue gas, it is characterized in that the concentration of described aqueous surfactant solution is 0.04-0.4mol/l, the concentration of CNT in described suspension is 5-40mg/ml.
6. the cigarette of the cigarette additive of harmful components preparation in the described reduction cigarette mainstream flue gas of claim 1, it is characterized in that, be that cigarette additive is added in the flavoring essence that is formed by other cigarette additive, propane diols, the allotment of second alcohol and water, be sprayed on the tobacco leaf, perhaps be sprayed on additive on the tobacco leaf separately; Then through leaves moisting, chopping, baking silk, perfuming, roll, technology of the package, the finished cigarettes that makes, described cigarette additive are that CNT is scattered in resulting suspension in the aqueous surfactant solution.
7. the cigarette of the cigarette additive of harmful components preparation is characterized in that the addition of described CNT additive is the 1-25% of pipe tobacco weight in the reduction cigarette mainstream flue gas according to claim 6.
8. the cigarette of the cigarette additive of harmful components preparation is characterized in that the addition of described CNT additive is the 15-20% of pipe tobacco weight in the reduction cigarette mainstream flue gas according to claim 7.
9. according to the cigarette of the cigarette additive of harmful components in claim 6 or 7 or 8 described reduction cigarette mainstream flue gas preparation, it is characterized in that described CNT is one or both in SWCN, the multi-walled carbon nano-tubes.
10. the cigarette of the cigarette additive of harmful components preparation is characterized in that described CNT is a multi-walled carbon nano-tubes in the reduction cigarette mainstream flue gas according to claim 9.
11. the cigarette of the cigarette additive of harmful components preparation in the reduction cigarette mainstream flue gas according to claim 6, it is characterized in that described surfactant is any or several compound in lauryl sodium sulfate, neopelex, softex kw, DTAB, 4-vinylpridine, methyl-sulfoxide, polyethylene glycol, empgen BB, Qu Latong X-30, the PVP.
12. cigarette according to the preparation of the cigarette additive of harmful components in claim 6 or the 11 described reduction cigarette mainstream flue gas, it is characterized in that, the concentration of described aqueous surfactant solution is 0.04-0.4mol/l, and the concentration of CNT in described suspension is 5-40mg/ml.
CN200910308650A 2009-10-22 2009-10-22 Additive for lowering harmful constituents in cigarette flue gas and cigarette thereof Pending CN101692934A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101858042A (en) * 2010-06-13 2010-10-13 湖南中烟工业有限责任公司 Cigarette forming paper functional paint for selectively reducing harmful substances such as phenol and the like in smoke gas
CN101921364A (en) * 2010-09-10 2010-12-22 浙江中烟工业有限责任公司 Polycationic additive capable of reducing benzo[a]pyrene in cigarette smoke and preparation method thereof
CN101948553A (en) * 2010-09-10 2011-01-19 浙江中烟工业有限责任公司 Polyanion composite material for reducing benzo (a) pyrene contained in cigarette smoke and preparation method
CN102068025A (en) * 2011-02-25 2011-05-25 河南农业大学 Burley tobacco air-curing promoting and coloring agent
CN102138703A (en) * 2011-01-07 2011-08-03 山东中烟工业有限责任公司 Top modified transitional metal carbon hollow pipe material, and preparation method and application thereof
CN102771894A (en) * 2012-08-07 2012-11-14 湖南中烟工业有限责任公司 Thread added cigarette holder capable of reducing harmfulness of cigarettes
CN103334337A (en) * 2013-05-09 2013-10-02 湖南中烟工业有限责任公司 Selective phenol reduction paper coating material, preparation method and application thereof
CN103462219A (en) * 2013-05-30 2013-12-25 贵州中烟工业有限责任公司 Cigarette filter containing ultralong TiO2 aquo-complex nanotube
CN103908017A (en) * 2014-03-31 2014-07-09 河南中烟工业有限责任公司 Tobacco harm reduction processing solvent and method for reducing ammonia in mainstream cigarette smoke
CN106048324A (en) * 2016-07-13 2016-10-26 安徽祈艾特电子科技股份有限公司 Carbon nano tube reinforced aluminum-magnesium composite alloy material for automobile electronic packaging and preparation method of alloy material
CN108576922A (en) * 2018-03-21 2018-09-28 云南中烟工业有限责任公司 The complex additive and its preparation method and application of phenol release amount in a kind of reduction flue gas
CN108851197A (en) * 2018-03-21 2018-11-23 云南中烟工业有限责任公司 The surface modifying material and its preparation method and application of phenol release amount in a kind of reduction flue gas
CN115644486A (en) * 2022-10-31 2023-01-31 江西中烟工业有限责任公司 Method for reducing content of polycyclic aromatic hydrocarbon in cigarette smoke tar

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101858042A (en) * 2010-06-13 2010-10-13 湖南中烟工业有限责任公司 Cigarette forming paper functional paint for selectively reducing harmful substances such as phenol and the like in smoke gas
CN101921364A (en) * 2010-09-10 2010-12-22 浙江中烟工业有限责任公司 Polycationic additive capable of reducing benzo[a]pyrene in cigarette smoke and preparation method thereof
CN101948553A (en) * 2010-09-10 2011-01-19 浙江中烟工业有限责任公司 Polyanion composite material for reducing benzo (a) pyrene contained in cigarette smoke and preparation method
CN101921364B (en) * 2010-09-10 2012-03-21 浙江中烟工业有限责任公司 Polycationic additive capable of reducing benzo [a] pyrene in cigarette smoke and preparation method thereof
CN101948553B (en) * 2010-09-10 2012-07-11 浙江中烟工业有限责任公司 Polyanion composite material for reducing benzo (a) pyrene contained in cigarette smoke and preparation method
CN102138703B (en) * 2011-01-07 2013-03-27 山东中烟工业有限责任公司 Top modified transitional metal carbon hollow pipe material, and preparation method and application thereof
CN102138703A (en) * 2011-01-07 2011-08-03 山东中烟工业有限责任公司 Top modified transitional metal carbon hollow pipe material, and preparation method and application thereof
CN102068025A (en) * 2011-02-25 2011-05-25 河南农业大学 Burley tobacco air-curing promoting and coloring agent
CN102068025B (en) * 2011-02-25 2012-11-14 河南农业大学 Burley tobacco air-curing promoting and coloring agent
CN102771894A (en) * 2012-08-07 2012-11-14 湖南中烟工业有限责任公司 Thread added cigarette holder capable of reducing harmfulness of cigarettes
CN103334337A (en) * 2013-05-09 2013-10-02 湖南中烟工业有限责任公司 Selective phenol reduction paper coating material, preparation method and application thereof
CN103334337B (en) * 2013-05-09 2015-08-05 湖南中烟工业有限责任公司 One is selective falls phenol coating for paper and its preparation method and application
CN103462219A (en) * 2013-05-30 2013-12-25 贵州中烟工业有限责任公司 Cigarette filter containing ultralong TiO2 aquo-complex nanotube
CN103908017A (en) * 2014-03-31 2014-07-09 河南中烟工业有限责任公司 Tobacco harm reduction processing solvent and method for reducing ammonia in mainstream cigarette smoke
CN103908017B (en) * 2014-03-31 2016-01-20 河南中烟工业有限责任公司 The method of tobacco harm reduction process solvent and reduction ammonia of main stream smoke of cigarette
CN106048324A (en) * 2016-07-13 2016-10-26 安徽祈艾特电子科技股份有限公司 Carbon nano tube reinforced aluminum-magnesium composite alloy material for automobile electronic packaging and preparation method of alloy material
CN108576922A (en) * 2018-03-21 2018-09-28 云南中烟工业有限责任公司 The complex additive and its preparation method and application of phenol release amount in a kind of reduction flue gas
CN108851197A (en) * 2018-03-21 2018-11-23 云南中烟工业有限责任公司 The surface modifying material and its preparation method and application of phenol release amount in a kind of reduction flue gas
CN115644486A (en) * 2022-10-31 2023-01-31 江西中烟工业有限责任公司 Method for reducing content of polycyclic aromatic hydrocarbon in cigarette smoke tar

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Open date: 20100414