A kind of preparation method of laminated structure porous catalytic carbon membrane

Abstract

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 laminated structure porous catalytic carbon membrane. It is characterized in that through the four steps of raw material pretreatment, catalyst layer and carbon film precursor layer superposition and compounding, drying and pyrolysis, the catalyst layer and carbon film layer are combined into a whole by superposition, and the double catalyst layer with both catalysis and separation is prepared. Functional porous catalytic carbon membrane. When the reaction material flows from one side of the catalytic carbon membrane through its porous channel to the other side, it simultaneously completes the dual functions of material highly distributed and dispersed to enhance mass transfer and complete the chemical reaction process inside the catalytic carbon membrane. The present invention is a novel membrane material preparation technology for a catalytic carbon membrane with simple preparation process, good repeatability and high mechanical strength, which is beneficial to improving the conversion rate, yield and selectivity of the reaction of the catalytic carbon membrane; the technology optimizes the production process of the product , Reduced equipment and product costs.

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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