Catalyst for reducing the content of CO in cigarette smoke and preparation and application thereof

A cigarette smoke and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, applications, etc., can solve the problems of poor storage stability, poor catalytic oxidation of CO, high catalyst cost, etc., to achieve good storage stability, The effect of low production cost and simple production process

Active Publication Date: 2010-08-18
CHINA TOBACCO ZHEJIANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Although a lot of research work has been done on reducing the CO content in cigarette smoke by catalytic oxidation, the existing research results still have the following deficiencies: (1) the cost of the catalyst is high and the storage stability is poor; (2) Catalytic oxidation of CO is poor at room temperature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Immerse 1 gram of 80-100-mesh activated carbon carrier in 5 ml of ethanol solution for 1 hour, and then vacuum-dry it at room temperature for 24 hours before use. Then adopt equal-volume impregnation method, prepare 0.01g palladium chloride and 0.12g cupric chloride into corresponding ethanol solution, and add active carbon support into this solution and impregnate for 1 hour, vacuum dry at room temperature for 24 hours to obtain catalyst. Catalysts using coconut shell activated carbon, wood activated carbon, tobacco activated carbon or super activated carbon as carriers are marked as Coconut AC-1, Wood AC-1, CigaretteAC-1 and Super AC-1, respectively.

[0036] A section of filter column (15 mm in length) added with 30 mg of catalyst is arranged at the filter tip close to the shredded tobacco section to make a composite filter tip and make a cigarette. The sample processing and smoking environment are in accordance with the national standard GB / T16447-2004 "Atmospheric ...

Embodiment 2

[0039] Immerse 1 gram of 80-100-mesh activated carbon carrier for tobacco in 5 milliliters of ethanol solution for 1 hour, and then vacuum-dry it at room temperature for 24 hours before use. Then adopt equal-volume impregnation method, prepare 0.015g palladium chloride and 0.18g cupric chloride into corresponding ethanol solution, and add active carbon carrier into this solution and impregnate for 1 hour, room temperature vacuum drying for 24 hours, obtain catalyst.

[0040] The method for testing the CO removal rate of the catalyst is the same as that of Example 1, and the CO removal rate of the catalyst in mainstream cigarette smoke is 8.0%.

Embodiment 3

[0042] Immerse 1 gram of 80-100-mesh activated carbon carrier in 5 ml of ethanol solution for 1 hour, and then vacuum-dry it at room temperature for 24 hours before use. Then adopt equal volume impregnation method, prepare corresponding ethanol solution with 0.02g palladium chloride and 0.18g cupric chloride, and add active carbon carrier into this solution and impregnate for 1 hour, vacuum dry at room temperature for 24 hours, obtain catalyst. Catalysts using coconut shell activated carbon, wood activated carbon, tobacco activated carbon or super activated carbon as carriers are marked as Coconut AC-2, Wood AC-2, CigaretteAC-2 and Super AC-2 respectively.

[0043] The CO removal rate test method of the catalyst is the same as that in Example 1, and the CO removal rate of the above-mentioned catalyst to cigarette mainstream smoke is shown in the following table:

[0044] catalyst

[0045] catalyst

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PUM

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Abstract

The invention relates to a catalyst for the oxidation of CO under normal temperature, in particular to a catalyst for reducing the content of CO in cigarette smoke and the preparation and the application thereof. The catalyst for reducing the content of CO in cigarette smoke comprises the following components in mass percentage: 0.5 to 3% of PdCl, 5 to 15% of CuCl2, and 65 to 95% of active carbon carrier. The catalyst of the invention has simple production technology, good storage stability and lower production cost. A catalyst suitable for the use in cigarette is provided by using the catalysis method, wherein the carbon monoxide is oxidized to carbon dioxide. The invention provides a catalyst suitable for the use in cigarette, and the produced composite filter tip can reduce the content of carbon monoxide in the main smoke stream of cigarette by 5 to 25%.

Description

technical field [0001] The invention relates to a carbon monoxide oxidation catalyst at normal temperature, in particular to a catalyst for reducing the carbon monoxide content in cigarette smoke, a preparation method and application thereof. Background technique [0002] Carbon monoxide (CO) is a typical substance harmful to human body that is produced during cigarette smoking and mainly exists in the gaseous phase of cigarette smoke. During the combustion of cigarettes, a large amount of CO will be generated due to thermal decomposition and combustion of tobacco components. The chemical affinity between CO and human hemoglobin is about 240 to 250 times that of oxygen. Inhaled CO and hemoglobin can form very stable carboxyhemoglobin, leading to tissue hypoxia, arrhythmia, high blood pressure and even death. With my country's accession to the "International Framework Convention on Tobacco Control" and the improvement of people's living standards, consumers are increasingly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/13B01J27/122B01D53/86B01D53/62A24D3/16
CPCY02A50/20
Inventor 储国海周国俊沈凯詹望成郭杨龙卢冠忠
Owner CHINA TOBACCO ZHEJIANG IND
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