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Preparation method of oxygen permeable membrane

An oxygen-permeable membrane and a technology of preparation steps are applied in the direction of semi-permeable membrane separation, chemical instruments and methods, membrane technology, etc., which can solve the problems of low oxygen permeability of biphasic oxygen-permeable membranes, and achieve aerobic ion conductivity and chemical The effects of stability, excellent resistance to molten salt erosion, and high oxygen ion conductivity

Pending Publication Date: 2019-08-23
陈松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Technical problem to be solved by the present invention: Aiming at the main problem of the dual-phase oxygen-permeable membrane is that the oxygen permeability is generally low, a preparation method of the oxygen-permeable membrane is provided

Method used

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  • Preparation method of oxygen permeable membrane

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example 1

[0028] Mix yttrium oxide, zirconium oxide, iron nitrate and cobalt nitrate uniformly in a mass ratio of 1:1:3:3 to obtain mixture A, add absolute ethanol to mixture A, and perform ball milling to obtain mixture B. B is subjected to static pressure treatment to obtain a static product, which is subjected to solid-phase synthesis treatment and cooled to room temperature to obtain a green body, which is crushed and passed through a 30-mesh sieve, ground, and passed through a 180-mesh sieve to obtain Precursor powder; mix perovskite powder, precursor powder and absolute ethanol, perform ball milling and drying treatment, and cool to room temperature to obtain dry powder; take dry powder, polyethersulfone, N-methylpyrrolidone, polyethylene Pyrrolidone, dry powder, polyethersulfone, N-methylpyrrolidone and polyvinylpyrrolidone are mixed, and subjected to static pressure degassing treatment to obtain spinning solution, and the spinning solution is subjected to spinning treatment to ob...

example 2

[0030] Mix yttrium oxide, zirconium oxide, iron nitrate and cobalt nitrate uniformly in a mass ratio of 1:1:3:3 to obtain mixture A, add absolute ethanol to mixture A, and perform ball milling to obtain mixture B. B is subjected to static pressure treatment to obtain a static product, which is subjected to solid-phase synthesis treatment and cooled to room temperature to obtain a green body, which is crushed and passed through a 35-mesh sieve, ground, and passed through a 190-mesh sieve to obtain Precursor powder; mix perovskite powder, precursor powder and absolute ethanol, perform ball milling and drying treatment, and cool to room temperature to obtain dry powder; take dry powder, polyethersulfone, N-methylpyrrolidone, polyethylene Pyrrolidone, dry powder, polyethersulfone, N-methylpyrrolidone and polyvinylpyrrolidone are mixed, and subjected to static pressure degassing treatment to obtain spinning solution, and the spinning solution is subjected to spinning treatment to ob...

example 3

[0032] Mix yttrium oxide, zirconium oxide, iron nitrate and cobalt nitrate uniformly in a mass ratio of 1:1:3:3 to obtain mixture A, add absolute ethanol to mixture A, and perform ball milling to obtain mixture B. B is subjected to static pressure treatment to obtain a static pressed product, which is subjected to solid-phase synthesis treatment and cooled to room temperature to obtain a green body, which is crushed and passed through a 40-mesh sieve, ground, and passed through a 200-mesh sieve to obtain Precursor powder; mix perovskite powder, precursor powder and absolute ethanol, perform ball milling and drying treatment, and cool to room temperature to obtain dry powder; take dry powder, polyethersulfone, N-methylpyrrolidone, polyethylene Pyrrolidone, dry powder, polyethersulfone, N-methylpyrrolidone and polyvinylpyrrolidone are mixed, and subjected to static pressure degassing treatment to obtain spinning solution, and the spinning solution is subjected to spinning treatme...

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Abstract

The invention relates to a preparation method of an oxygen permeable membrane, belonging to the technical field of new materials. The invention utilizes better oxygen ion conductivity and chemical stability at high temperature of zirconia solid electrolyte with stable yttrium oxide. As that cubic perovskite structure has relatively open space inside, a larger channel is provided for oxygen ion conduction in the cubic perovskite structure, and therefore, the prepared oxygen permeable membrane has high oxygen ion conductivity; the present invention adopts phase inversion-sintering technology, aspinning solution is extruded into a wet film by a spinneret, as that wet membrane is immersed in a non-solvent, the thermodynamic state of the wet film is changed, so as to generate phase splitting to form a solid film, so as to prepare the oxygen permeable membrane with high oxygen permeability, and during the phase inversion process, because of rapid diffusion between solvent and non-solvent, afinger pore structure is formed on the inner and outer surfaces of the hollow fiber membranes and a sponge pore structure is formed on the middle layer, the sandwich structure reduces the actual working thickness of the membranes and greatly improves the oxygen permeation performance.

Description

technical field [0001] The invention relates to a preparation method of an oxygen-permeable membrane, which belongs to the technical field of new materials. Background technique [0002] As an important chemical raw material, hydrogen has been in increasing demand in electronics, chemical industry and energy in recent years. In particular, hydrogen, as an efficient and clean new energy source, has a growing demand. How to efficiently separate and purify hydrogen has become a key technology. Ceramic hydrogen permeable membrane has completely selective hydrogen permeable performance and low price. It has broad prospects in the application of hydrogen separation and membrane reaction, and has been paid more and more attention by people. However, how to prepare ceramic hydrogen permeable membranes with high permeability and high stability has become one of the important factors restricting its development. [0003] The early ceramic hydrogen permeable membranes were all non-su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B35/26C04B35/622B01D67/00B01D69/08D01F8/16D01F8/10D01F1/10
CPCB01D67/0039B01D69/08C04B35/2608C04B35/622C04B38/00C04B2235/3225C04B2235/3244C04B2235/443D01F1/10D01F8/10D01F8/16
Inventor 陈松
Owner 陈松
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