Method for preparing amino-modified hierarchical pore adsorbent material for cigarette harm reduction

An adsorbent and raw material technology, which is applied in the field of preparation of amino-functionalized hierarchical porous adsorbent materials, can solve the problems of decomposition, inability to directly obtain multi-level materials, and the length of the formation path, and achieves adjustable pore size, which is beneficial to transmission and Diffusion, highly connected effect of pore structure

Active Publication Date: 2013-06-19
SHANGHAI TOBACCO GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these existing synthetic methods all pre-prepare ordered hard template templates (such as colloidal crystals), and the formation route is relatively long, and high-temperature calcination is often required to remove the template agent during the synthesis process, which will lead to organic functional groups. It is impossible to directly obtain mult

Method used

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  • Method for preparing amino-modified hierarchical pore adsorbent material for cigarette harm reduction
  • Method for preparing amino-modified hierarchical pore adsorbent material for cigarette harm reduction
  • Method for preparing amino-modified hierarchical pore adsorbent material for cigarette harm reduction

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Dissolve 0.25g of P123, 0.4g of tetraethyl orthosilicate, 0.18g of γ-aminopropyltrimethoxysilane and 0.5g of hydrochloric acid aqueous solution (2M) in 15g of ethanol, and stir at room temperature for 4h, and mix the resulting solution with 10g The ethanol solution of PMMA microspheres (10%, particle size 220nm) was ultrasonically mixed, poured into a petri dish and placed in a 30°C oven to evaporate the solvent. After the solvent evaporated for 24 hours, it was further aged in a 60°C oven for 8 hours to obtain Uniform composite film. After the film was scraped off, it was slightly crushed and ultrasonically dispersed in tetrahydrofuran (60mL) and refluxed at 50°C for 12h. After the granular product was filtered and washed, it was dried in a vacuum oven at 50°C to obtain a multi-level pore structure. Pore-Mesoporous Silica Adsorbent Materials. The macropore diameter of the material is 200nm, the mesopore diameter is 10.5nm, the specific surface area is 328m2 / g, the por...

Embodiment 2

[0038] Dissolve 0.42g F127, 0.75g tetraethyl orthosilicate, 0.22g N-β-aminoethyl-γ-aminopropylmethyldimethoxysilane and 0.8g aqueous hydrochloric acid (2M) in 10g ethanol, and Stir at room temperature for 4 hours, ultrasonically mix the obtained solution with 15g of PS microsphere ethanol solution (10%, particle size 530nm), pour it into a petri dish and place it in a 50°C oven to evaporate the solvent, and wait for the solvent to evaporate for 18 hours , and further aged in an oven at 80° C. for 16 hours to obtain a uniform composite film. After the film was scraped off, it was slightly crushed and ultrasonically dispersed in toluene (100mL) and refluxed at 80°C for 24 hours. After the granular product was filtered and washed, it was dried in a vacuum oven at 50°C to obtain a multi-level pore structure. Pore-Mesoporous Silica Adsorbent Materials. The macropore diameter of the material is 512nm, the mesopore diameter is 12.3nm, the specific surface area is 302m2 / g, the pore b...

Embodiment 3

[0040] Dissolve 0.5g of F108, 1.2g of ethyl orthosilicate, 0.1g of γ-aminopropylmethyldiethoxysilane and 0.4g of aqueous hydrochloric acid (2M) in 10g of ethanol, and stir at room temperature for 12h to obtain After the solution and 15g of PS microsphere ethanol solution (10%, particle size 1100nm) are ultrasonically mixed, pour it into a petri dish and put it in a 30°C oven to evaporate the solvent. After the solvent evaporates for 24 hours, it is further aged in a 60°C oven 24h, a uniform composite film was obtained. After the film is scraped off, it is slightly crushed and ultrasonically dispersed in dichloromethane (100mL) and refluxed at 60°C for 12h. After the granular product is filtered and washed, it is dried in a vacuum oven at 50°C to obtain a multi-level pore structure. , Macroporous-mesoporous silica adsorbent material. The macropore diameter of the material is 1055nm, the mesopore diameter is 8.0nm, the specific surface area is 408m2 / g, the pore body is 0.51cm3 / ...

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Abstract

The invention relates to the field of tobaccos and in particular relates to a method for preparing an amino-modified hierarchical pore adsorbent material for cigarette harm reduction. The invention provides a method for preparing a macropore-mesoporous silicon dioxide adsorbent material, which comprises the following steps: weighing raw materials according to a ratio, uniformly dispersing organic high polymer microspheres in ethanol in which a silicon source, an acidic aqueous solution and a surfactant are dissolved, and stirring the mixture at room temperature for a period of time for performing prehydrolysis on the silicon source; and volatilizing a solvent in the mixed solution on a substrate, ageing an obtained composite film material, performing reflux treatment on the aged composite film material in a solvent, and extracting to remove a high polymer microsphere template and the surfactant, so as to obtain the macropore-mesoporous silicon dioxide adsorbent material. The material synthesized by using the method for preparing the macropore-mesoporous silicon dioxide adsorbent material has a large specific surface area and a large pore body, and a large quantity of amino groups are modified on the pore walls.

Description

technical field [0001] The invention relates to the field of tobacco, in particular to a method for preparing an amino-functionalized hierarchical porous adsorbent material used for cigarette harm reduction. Background technique [0002] With the development of modern science and technology, people have a deeper understanding of the composition and hazards of cigarette smoke. According to literature reports, more than 4,000 substances have been identified in cigarette smoke, among which, in addition to the addictive substance nicotine, more than 40 polycyclic compounds with carcinogenic and tumorigenic activities have been detected from tar, the main component of mainstream smoke. Aromatic compounds. In order to reduce the content of harmful components in smoke, many domestic researchers have carried out a lot of research on cigarette harm reduction. Adding special adsorbents to filters is considered to be a promising way to reduce the harm of cigarettes. People have trie...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30
Inventor 沙云菲刘百战郑赛晶陈敏王磊君
Owner SHANGHAI TOBACCO GRP CO LTD
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