Method for modifying tobacco activated carbon by virtue of ozone and application of modified activated carbon

A technology for activated carbon and cigarettes, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of unstable effect and unclear mechanism, and achieve the effect of simple and easy method, low cost, and feasible practical application prospect.

Inactive Publication Date: 2015-05-06
CHINA TOBACCO GUANGDONG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the mechanism of the existing activated carbon to adsorb flavors and fragrances for cigarettes is unknown, and the effect is not stable.

Method used

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  • Method for modifying tobacco activated carbon by virtue of ozone and application of modified activated carbon
  • Method for modifying tobacco activated carbon by virtue of ozone and application of modified activated carbon
  • Method for modifying tobacco activated carbon by virtue of ozone and application of modified activated carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Example 1 Ozone Modification of Activated Carbon for Tobacco

[0062] S1. Activated carbon pretreatment:

[0063] Take XFP01 activated carbon, wash it with a certain amount of distilled water several times to remove surface ash components and impurities, filter it with suction, and dry it at 100°C for 24 hours.

[0064] S2. Activated carbon modification:

[0065] Take 1 g of the treated activated carbon and put it into a glass reactor. Add 20mL of 2mol / L sulfuric acid, the sample is marked as XF / H 2 SO 4 . Then pass O 3 (10g / h), the reaction time is 10min, 20min, 1h, 2h respectively. Finally, filter with suction, and dry the filter cake at 100°C for 24 hours.

[0066] The test results are as follows:

[0067] Specific Surface and Pore Structure Test of Modified Activated Carbon

[0068] Table 1 shows the results of specific surface area and pore structure of activated carbon after different ozone modification times. It can be seen from Table 1 that when the mod...

Embodiment 2

[0109] Example 2 Applied evaluation test

[0110] S1. Activated carbon pretreatment:

[0111] Take XFP01 activated carbon, wash it with a certain amount of distilled water several times to remove surface ash components and impurities, filter it with suction, and dry it at 100°C for 24 hours.

[0112] S2. Activated carbon modification:

[0113] Take 1 g of the treated activated carbon and put it into a glass reactor. Add 20mL of 2mol / L sulfuric acid, the sample is marked as XF / H 2 SO 4 . Then pass O 3 (10g / h), the reaction time is 10min, 20min, 1h, 2h respectively. Finally, filter with suction, and dry the filter cake at 100°C for 24 hours. Get XF / 10min (modification time 10min), XF / 20min (modification time 20min), XF / 1h (modification time 60min) and XF / 2h (modification time 120min).

[0114] The above-mentioned smoke activated carbon sample and comparative activated carbon XF were respectively adsorbed 2-cyclopentenone according to the aforementioned method.

[0115] ...

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Abstract

The invention discloses a method for modifying tobacco activated carbon by virtue of ozone and application of modified activated carbon. An adsorption material activated carbon for a tobacco flavor is modified with 2mol/L sulfuric acid under the condition that ozone is introduced. The specific surface area and pore volume of the modified activated carbon are both increased, the species of surface total acid groups are increased, the increases of both specific surface area and pore volume, the content of the surface total acid groups and the desorption activation energy are all associated with the sulfuric acid modification process conditions, the method provides the technical basis for improving the adsorption capacity of activated carbon on the tobacco flavor, and the tobacco activated carbon obtained by modification can be applied as an adsorbent material and/or a sustained release material and/or a controlled release material for the tobacco flavor.

Description

technical field [0001] The invention relates to the technical field of application of modified activated carbon, more specifically, relates to an ozone modification method of activated carbon and its application in improving the adsorption capacity of activated carbon to flavors used in cigarettes. Background technique [0002] Flavors and fragrances have a long history of use in our country, and now they have become important raw materials in food, daily chemical, tobacco and other industries. There are many types of spices, among which ketone flavors have been widely used in industry, such as adding them to cigarettes to enhance the flavor. However, most flavors and fragrances are volatile, which is not conducive to storage and transportation. Therefore, how to control the release of flavors and fragrances to facilitate their storage and application has become a research hotspot in the current cigarette industry. 2-Cyclopentenone is a kind of cyclopentenone fragrance mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30
CPCB01J20/20B01J20/3085B01J2220/42B01J2220/4806
Inventor 陈森林孔浩辉陈梅丽李忠黄奕瑕
Owner CHINA TOBACCO GUANGDONG IND
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