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Adsorbent for selectively reducing gas phase ammonia in main stream smoke of cigarette

A cigarette mainstream smoke and adsorbent technology, which is applied in the field of tobacco cigarettes, can solve the problems of reducing the amount of ammonia released in the gaseous phase, cannot be selectively removed, and has high ammonia content, and achieves the effects of reducing the amount of release, novel structure, and reduced release

Active Publication Date: 2014-07-02
SHANGHAI TOBACCO GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide an adsorbent that selectively reduces the gaseous ammonia in the mainstream smoke of cigarettes. Adding this adsorbent to the filter rod of cigarettes can achieve selective reduction. The effect of the release of gas-phase ammonia in mainstream smoke overcomes the defects of high ammonia content in cigarette smoke and the inability to selectively remove it in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Prepare the adsorbent as follows;

[0032] 1) Cross-linking reaction: Disperse 2 g of mesoporous silica particles with a particle size of 30-60 mesh in 80 ml of toluene solution under the action of ultrasound, and then add 1.5 ml of γ-(2,3 glycidoxy) propyltrimethoxy Silane cross-linking agent, shake and mix evenly; carry out cross-linking reaction at 80°C, the reaction adopts the condensation reflux method, the reaction time is 12 hours, stop the reflux after the reaction, and obtain the cross-linked γ-(2,3 glycidyl oxide ) Mesoporous silica particles of propyltrimethoxysilane, washed 4 times with ethanol, and then sealed in ethanol for subsequent use;

[0033] 2) Activation: Add 1 g of mesoporous silica particles cross-linked with γ-(2,3 glycidoxy)propyltrimethoxysilane obtained in step 1) to 50 ml of CB buffer to wash once, and shake fully Finally, the supernatant was removed by centrifugation, and then added to 50ml of CB buffer containing 5% glutaraldehyde. After ...

Embodiment 2

[0039] Prepare the adsorbent as follows;

[0040] 1) Cross-linking reaction: Disperse 2 g of mesoporous silica particles with a particle size of 30-60 mesh in 80 ml of toluene solution under the action of ultrasound, and then add 1.5 ml of γ-(2,3 glycidoxy) propyltrimethoxy Silane cross-linking agent, shake and mix evenly; carry out cross-linking reaction at 100 ° C, the reaction adopts the condensation reflux method, the reaction time is 15 hours, stop the reflux after the reaction, and obtain the cross-linked γ-(2,3 glycidyl oxide ) Mesoporous silica particles of propyltrimethoxysilane, washed 4 times with ethanol, and then sealed in ethanol for subsequent use;

[0041] 2) Activation: Add 1 g of mesoporous silica particles cross-linked with γ-(2,3 glycidoxy)propyltrimethoxysilane obtained in step 1) to 50 ml of CB buffer to wash once, and shake fully Finally, centrifuge to remove the supernatant, then add 50ml of CB buffer solution containing 10% glutaraldehyde, rotate and ...

Embodiment 3

[0047] Prepare the adsorbent as follows;

[0048] 1) Cross-linking reaction: Disperse 2 g of mesoporous silica particles with a particle size of 30-60 mesh in 80 ml of toluene solution under the action of ultrasound, and then add 1.5 ml of γ-(2,3 glycidoxy) propyltrimethoxy Silane cross-linking agent, shake and mix evenly; carry out cross-linking reaction at 90°C, the reaction adopts the condensation reflux method, the reaction time is 15 hours, stop the reflux after the reaction, and obtain the cross-linked γ-(2,3 glycidoxy ) Mesoporous silica particles of propyltrimethoxysilane, washed 4 times with ethanol, and then sealed in ethanol for subsequent use;

[0049] 2) Activation: Add 1 g of mesoporous silica particles cross-linked with γ-(2,3 glycidoxy)propyltrimethoxysilane obtained in step 1) to 50 ml of CB buffer to wash once, and shake fully Afterwards, centrifuge to remove the supernatant, then add 50ml of CB buffer containing 8% glutaraldehyde, and rotate and activate at...

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Abstract

The invention discloses an adsorbent which is a mesoporous silica particle that is crosslinked by gamma-(2, 3 epoxy propyl) gamma-chloropropyl trimethoxysilane and is modified with glutathione. The release quantity of gas phase ammonia of main stream smoke of cigarettes is reduced selectively by utilizing strong chemical effect between glutathione and ammonia, so that cigarette filter bars prepared from the adsorbent disclosed by the invention can effectively reduce the release quantity of gas phase ammonia in the main stream smoke of the cigarettes; the filter bars in which the adsorbent is added are applied to cigarettes, and the release quantity of the gas phase ammonia in the main stream smoke can be reduced by more than 30%.

Description

technical field [0001] The invention relates to the field of tobacco cigarettes, in particular to an adsorbent for selectively reducing gas-phase ammonia in cigarette mainstream smoke. Background technique [0002] Ammonia is a natural component of tobacco. Since the tobacco used in cigarettes is acidic, the ammonia in tobacco exists in the form of protons, that is, in the form of ammonium salts of natural carboxylic acids in tobacco, otherwise it will be volatilized and lost. After cigarettes are burned and smoked, ammonia exists in both the gas phase and particle phase of the smoke. Although the content of ammonia in the mainstream smoke of cigarettes is much lower than that of tobacco, it directly acts on the human body. Ammonia in cigarette smoke comes from nitrogen-containing compounds in tobacco and other auxiliary materials, including proteins, amino acids, nitrates, ammonium salts, amides, alkaloids, and nitrogen-containing heterocyclic compounds. The appropriate con...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30A24D3/06
Inventor 张乾郑赛晶陈敏王磊君王兵
Owner SHANGHAI TOBACCO GRP CO LTD
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