Micro-mesoporous core-shell composite molecular sieve for reducing harmful ingredients of cigarettes and preparation method of micro-mesoporous core-shell composite molecular sieve

A technology of composite molecular sieve and harmful components, which is applied in the fields of tobacco, e-liquid filter elements, applications, etc., can solve the problem of expensive, etc., and achieve the effect of simple operation and equipment requirements, significant adsorption effect, and reduced harm

Inactive Publication Date: 2014-03-12
CHONGQING CHINA TOBACCO IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of realizing the present invention, the inventors have found that there are at least the following problems in the prior art: the synthesis of core-shell structure composite molecular sieves requires precise regulation of the pH value, and the use of relatively expensive templates. Finally, the templates have to pass high temperature Calcination to remove

Method used

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  • Micro-mesoporous core-shell composite molecular sieve for reducing harmful ingredients of cigarettes and preparation method of micro-mesoporous core-shell composite molecular sieve
  • Micro-mesoporous core-shell composite molecular sieve for reducing harmful ingredients of cigarettes and preparation method of micro-mesoporous core-shell composite molecular sieve
  • Micro-mesoporous core-shell composite molecular sieve for reducing harmful ingredients of cigarettes and preparation method of micro-mesoporous core-shell composite molecular sieve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Dissolve 2g of the template agent dodecylamine (DDA) in a mixed solution of 214ml of water and 286ml of methanol, stir until the solution is clear, then disperse 2g of ZSM-5 zeolite molecular sieve under the action of 200W ultrasonic waves. After the dispersion is uniform, add positive Ethyl silicate 2g. After reacting at room temperature for 24 hours, the product was centrifuged and washed to neutrality, then directly extracted in ethanol to remove the template agent, and then centrifuged and dried to obtain the product ZSM-5m-SiO 2 . ZSM-5m-SiO 2 The physical properties are shown in Table 1, and the adsorption and desorption curves are as follows figure 1 shown.

[0027] Table 1: ZSM-5 and ZSM-5m-SiO 2 physical performance data

[0028] sample

S BET

S micro

S ex

V micro

V ex

D meso

ZSM-5

346.43

318.14

28.29

0.16

0.03

0.51

[0029] ZSM-5m-SiO 2

528.08

127.13

400.42

0...

Embodiment 2

[0034] Dissolve 2g of template agent tetradecylamine (DDA) in a mixed solution of 250ml of water and 250ml of ethanol, stir until the solution is clear, disperse 2g of Y zeolite molecular sieve under the action of 200W ultrasonic waves, and after the dispersion is uniform, add orthosilicic acid Ethyl fat 2g. After reacting at room temperature for 48 hours, the product was centrifuged and washed to neutrality, then directly extracted in ethanol to remove the template agent, and then centrifuged and dried to obtain the product Ym-SiO 2 . Ym-SiO 2 The physical properties are shown in Table 3, and the XRD spectrum is shown in Table 3. figure 2 and TEM pictures see image 3 .

[0035] Table 3: Y zeolite molecular sieve and Ym-SiO 2 physical performance data

[0036] sample

S BET

S micro

S ex

V micro

V ex

D meso

Y

621.95

497.34

124.61

0.27

0.13

--

Ym-SiO 2

780.03

248.17

521.70

0.11

0....

Embodiment 3

[0041] Dissolve 2g of the template agent dodecylamine (DDA) in a mixed solution of 250ml of water and 250ml of ethanol, stir until the solution becomes clear, disperse 2g of 5A zeolite molecular sieve under the action of 200W ultrasonic waves, and after the dispersion is uniform, add orthosilicic acid Ethyl fat 3g. After reacting at room temperature for 24 hours, the product was centrifuged and washed to neutrality, then directly extracted in ethanol to remove the template agent, and then centrifuged and dried to obtain the product 5Am-SiO 2 . 5Am-SiO 2 The physical properties are shown in Table 5, and the scanned pictures are shown in Figure 4 , see the projected image Figure 5 .

[0042] Table 5: 5A Zeolite Molecular Sieve and 5Am-SiO 2 physical performance data

[0043] sample

S BET

S micro

S ex

V micro

V ex

D meso

5A

504.66

386.89

117.77

0.21

0.08

--

5Am-SiO 2

654.73

164.86

489.87 ...

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PUM

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Abstract

The invention discloses a micro-mesoporous core-shell composite molecular sieve for reducing harmful ingredients of cigarettes and a preparation method of the micro-mesoporous core-shell composite molecular sieve. The preparation method comprises the following steps: adding a template agent into a solution of which the alcohol-water ratio is (1:1)-(4:3); then adding a zeolite molecular sieve; performing ultrasonic dispersion for 0.5-2 hours; dropwise adding tetraethoxysilane of which the mass is 1-1.5 times that of the zeolite molecular sieve into the zeolite molecular sieve; stirring for 24-48 hours at room temperature; extracting the template agent by using ethanol at normal temperature to obtain a mesoporous-microporous core-shell composite molecular sieve material. In the preparation method disclosed by the invention, the template agent is extracted directly by using ethanol, so that high-temperature calcination is saved, and the preparation process is simpler; the micro-mesoporous core-shell composite molecular sieve is simple and convenient in operation and equipment requirement and low in price, and has good application prospect; the micro-mesoporous core-shell composite molecular sieve has a significant adsorption effect on harmful substances especially phenol in smoke of cigarettes when being applied to a binary composite filter rod.

Description

technical field [0001] The invention belongs to the field of cigarette harm reduction, and relates to a harm reduction material and a preparation method of the material, in particular to a micro-mesoporous core-shell composite molecular sieve and a preparation method thereof. Background technique [0002] With the progress of society, smoking and environmental issues have attracted worldwide attention. The "Framework Convention on Tobacco Control" requires governments to formulate more stringent "tobacco control" laws and regulations, urging cigarette manufacturers to strictly control the release of major harmful components in cigarette smoke while reducing the amount of tar released from cigarettes. In 2009, the Zhengzhou Tobacco Research Institute led a study on the cigarette smoke hazard index of Chinese-style cigarettes, and selected seven representative components as cigarette hazard evaluation indicators, such as CO, HCN, NNK, B[a] P, phenol, etc. The inventors found...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/04A24D3/10
CPCA62D3/30A62D3/36
Inventor 戴亚俞海军汪长国马扩彦孙玉峰
Owner CHONGQING CHINA TOBACCO IND CO LTD
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