Preparation method of amino-modified hierarchical porous adsorbent material for cigarette harm reduction

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...

AI Technical Summary

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 multi-level materials with rich functional groups. Therefore, a simple and feasible method is developed to directly synthesize macroporous-mesoporous silica filter tip attachment materials with multi-level pore structures and rich functional groups. Important research value, also has important practical significance for the development of new low-harm cigarettes

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