Preparation method of mesoporous carbon-based solid acid and mesoporous carbon-based solid acid prepared through method and application

Abstract

A preparation method of mesoporous carbon-based solid acid includes the steps of dissolving water-soluble carbohydrate in water to obtain a precursor solution, dissolving nonionic surface active agent in the solution to obtain a mixed solution of a precursor and a template, adding inorganic acid to transfer the solution into a culture dish, evaporating the culture dish at a temperature of 40-60 DEG C for 6 hours, conducting thermal setting at a temperature of 100-150 DEG C for 6-24 hours to obtain a mixture of the precursor and the template, and directly calcinating the obtained mixture under the inert atmosphere to remove the template to obtain the mesoporous carbon-based solid acid. Carbohydrate low in price is adopted as the precursor, inorganic acid serves as carburizer, the acid is prepared through an evaporation, induction, self-assembly and carbonization method, the method is easy to operate and beneficial to large-scale production, and the mesoporous carbon-based solid acid synthesized through the method has a large specific surface and abundant surface acid groups and can be widely applied to heterogeneous acid catalysis and biomass conversion.

Description

technical field [0001] The invention relates to a mesoporous carbon with surface acidity. Background technique [0002] Porous carbon materials have a wide range of applications in adsorption, catalysis, separation of biomolecules, biological enzymes, hydrogen storage, and electrochemistry. So far, there are two main routes for the synthesis of mesoporous carbon. One is to use ordered precursors such as mesoporous silicon and mesoporous silicon-aluminum materials as templates, and use sucrose, glucose, furfuryl alcohol, etc. Nano-casting method to synthesize, this method can be collectively referred to as "hard template" method, such as, the patent of Liu Xiaoying of Fudan University, application number: 03114799.2, the patent of Dai Hongxing of Beijing University of Technology, application number: 200710118755.1, Shan Yongkui of East China Normal University patent, application number: 200710036630.4; another main synthesis method is the so-called "soft template" method, wh...

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Problems solved by technology

The above two methods are the main synthesis methods of mesoporous carbon-based materials so far. The hard template method can obtain highly ordered mesoporous carbon-based materials, but the synthesis process is cumbersome and costly.

The soft template method based on organic-organic interaction is a promising method. Most of the current synthesis methods use soluble phenolic resin polymer materials as carbon sources, but the assembly process requires precise control of the pH of the system. , thus increasing the difficulty of synthesizing mesoporous carbon

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