Preparation method of porous catalytic carbon membrane adopting laminated structure

Abstract

The invention belongs to the fields of reaction and separation in chemical engineering discipline as well as energy saving and environment protection, in particular relates to a preparation method of porous catalytic carbon membrane adopting a laminated structure. The method is characterized in that a catalyst layer and a carbon membrane layer are compounded integrally in a lamination manner through four steps of raw material pretreatment, lamination compounding of the catalyst layer and a carbon membrane precursor, drying and pyrolysis, and the porous catalyst carbon membrane with both catalyst and separation functions is prepared. When a reaction material flows through porous channels from one side of the catalyst carbon membrane to reach the other side, the dual function of high distribution dispersion and enhanced mass transfer of the material and completion of the chemical reaction process in the catalytic carbon membrane is finished. The preparation method is a novel catalytic carbon membrane material preparation technology which has the simple preparation process, good repeatability and high in mechanical strength, and the reaction conversion rate, yield and selectivity of the catalytic carbon membrane are improved; the product production process is optimized and the equipment and product costs are reduced with the technology.

Description

technical field [0001] The invention belongs to the fields of reaction and separation, energy saving and environmental protection in the discipline of chemical engineering, and in particular relates to a preparation method of a porous catalytic carbon membrane with a laminated structure. Background technique [0002] The membrane-based reaction separation process is to combine two processes with completely different functions (such as reaction and separation process) (Xing Weihong, et al. Chinese Science: Chemistry, 2014, (9): 1469-1481.; Xu Peiyuan, et al. . Filtration and Separation, 2006, (2): 22-25.). Compared with the traditional single reaction process or separation process, the membrane-based reaction separation process is more compact, less investment, and lower operating costs, so it has attracted more and more attention from the scientific and industrial circles (C. Zhou, et al.Angew . Chem. Int. Ed. 2016, 55, 12678-12682.; Xiong Guoxing, et al. Chinese Invention ...

AI Technical Summary

Problems solved by technology

Specifically, the catalyst layer and the carbon film precursor layer are combined into a whole by superposition, and then prepared through a pyrolysis process to obtain a porous membrane with catalytic, separation, fluid distribution, thermal and chemical stability. The catalytic carbon membrane can not only be used to complete the tasks of strengthening the chemical reaction process and the separation process at the same time, but also solve the problems of the existing blending catalytic carbon membranes, such as the difficulty in the preparation process control and the reduction of the mechanical strength of the catalytic carbon membrane. Membrane improves market competitiveness and provides a basis for early industrial application

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