Preparation method of porous catalytic carbon membrane adopting laminated structure

A technology of laminated structure and carbon film, which is applied in the direction of carbon monoxide reaction preparation, chemical instruments and methods, catalysts, etc., can solve the problems of reduced mechanical strength of catalytic carbon film and difficult control of the preparation process, etc.

Active Publication Date: 2017-11-10
SHENYANG POLYTECHNIC UNIV
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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 re

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  • Preparation method of porous catalytic carbon membrane adopting laminated structure

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preparation example Construction

[0023] A method for preparing a porous catalytic carbon membrane with a laminated structure, characterized in that: the method comprises the following steps;

[0024] (1) Raw material pretreatment steps:

[0025] Raw material pretreatment of the catalyst layer: Grinding the powdered catalyst, or mixing the powdered catalyst with a binder to form a paste, or grinding the powdered catalyst and mixing it with water to form a paste;

[0026] Raw material pretreatment of the carbon film precursor layer: after mixing the powdery carbon-containing precursor, or powdery carbon-containing precursor and additives, one or more of crushing, grinding, stirring, and then mixing with water to form a slurry Paste;

[0027] (2) Catalyst layer and carbon film precursor layer stacking and compounding step: put the pretreated catalyst layer raw material or the pretreated slime-like carbon film precursor layer raw material into the mold of the tablet machine, press and shape, and make A green tire...

specific Embodiment approach 1

[0036] First, the powdered catalyst is ground, or the powdered catalyst is ground and mixed with a binder to form a paste, or the powdered catalyst is ground and mixed with water to form a paste; in addition, the powdered carbon-containing precursor, or powder After the carbon-containing precursor is mixed with additives, one or more of crushing, grinding, and stirring are performed, and then mixed with water to form a paste. Among them, the raw material of the carbon film precursor layer is one or two of phenolic resin, petroleum coke, coal powder, carbon powder, graphite powder, and biomass powder, and the additives are carboxymethyl cellulose, sodium carboxymethyl cellulose, One or both of zinc chloride, sodium hydroxide, and hexamethylenetetramine; the raw material of the catalyst layer is one or more of nickel, platinum, silver, copper oxide, aluminum oxide, zinc oxide, or chromium oxide. The binder is one of epoxy resin, polyurethane, cellulose, acetal resin, melamine an...

specific Embodiment approach 2

[0037] First, the powdered catalyst is ground, or the powdered catalyst is ground and mixed with a binder to form a paste, or the powdered catalyst is ground and mixed with water to form a paste; in addition, the powdered carbon-containing precursor, or powder After the carbon-containing precursor is mixed with additives, one or more of crushing, grinding, and stirring are performed, and then mixed with water to form a paste. Among them, the raw material of the carbon film precursor layer is one or two of phenolic resin, petroleum coke, coal powder, carbon powder, graphite powder, and biomass powder, and the additives are carboxymethyl cellulose, sodium carboxymethyl cellulose, One or both of zinc chloride, sodium hydroxide, and hexamethylenetetramine; the raw material of the catalyst layer is one or more of nickel, platinum, silver, copper oxide, aluminum oxide, zinc oxide, or chromium oxide. The binder is one of epoxy resin, polyurethane, cellulose, acetal resin, melamine an...

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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 ...

Claims

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Application Information

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IPC IPC(8): B01J21/18B01J35/10C01B3/32C07C45/49C07C47/19C07C5/333C07C11/09C07C5/367C07C15/04C07D303/04C07D301/03
CPCB01J21/18B01J35/065B01J35/10C01B3/326C01B2203/0233C07C5/333C07C5/367C07C45/49C07C2521/18C07D301/03C07D303/04C07C47/19C07C11/09C07C15/04Y02P20/52
Inventor 吴永红张兵王东张晓宇刘珊珊
Owner SHENYANG POLYTECHNIC UNIV
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