Method for producing microporous mesoporous compound additives of cigarette filter tips

Abstract

The invention discloses a method for producing microporous mesoporous compound additives of cigarette filter tips. The method comprises: mixing solution of sodium hydroxide, silicon source and solution of cetyl trimethyl ammonium bromide serving as template for synthesizing mesoporous material; adding solution of tetraproylammonium bromide serving as the template for synthesizing microporous material; regulating the pH of the mixture to be between 9 and 11 and then transferring the mixture into a reaction kettle; performing synchronous crystallization for 12 to 72 hours at 150 to 180 DEG C; and obtaining the microporous mesoporous compound additives of cigarette filter tips after separating, washing, drying and roasting precipitate. The method overcomes the deficiency that the prior art is complex in technological process and narrow in pore size distribution of obtained composite additives, and provides the method which keeps temperature constant during synchronous crystallization, issimple in technological process and easy in control over preparation conditions, ensures wide pore size distribution and strong adsorption capacity of the obtained compound additives, and can be widely applied in the field of cigarettes.

Description

technical field [0001] The invention relates to a production method of microporous and mesoporous compounding, in particular to a method for synthesizing a microporous and mesoporous compounding additive for cigarette filters. Background technique [0002] Smoking and health have attracted worldwide attention. Reducing the release of harmful components in cigarette smoke, thereby reducing the harm of tobacco products to consumers, is the focus and difficulty of basic research on tobacco technology. The release of harmful components in the smoke can be reduced to a certain extent through the filtering effect of the cigarette filter. The basic filtering mechanism of the cigarette filter is the direct interception, inertial collision and diffusion deposition of smoke particles. Adding materials with a specific pore structure to cigarette filters to selectively adsorb harmful components in mainstream smoke is a convenient, feasible and effective way to selectively reduce harmful...

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Problems solved by technology

[0009] The various preparation methods disclosed above either require two or more steps to complete the crystallization process, or use expensive templating agents, or obtain composite materials with narrow pore size distribution. To a certain extent, the process is relatively complicated. , the prepared porous material is not suitable for the need to reduce the harmful components of cigarette smoke, etc.

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