Paper sintering metal fiber load molecular sieve membrane and preparation method thereof

Abstract

The invention discloses a paper sintering metal fiber load molecular sieve membrane and a preparation method thereof. The paper sintering metal fiber load molecular sieve membrane has the thickness of 0.1-1.5mu m. The preparation method comprises the following steps of: pulping size prepared from an adhesive and a metal fiber at a mass ratio of (1-1):(1-3), drying, then sintering in a nitrogen or hydrogen atmosphere, preprocessing through an anode oxidization process, and synthesizing the molecular sieve membrane with an adjustable thickness on the surface of the metal fiber by adopting a secondary growth process. The preparation method is simple; the sintering metal fiber is of a three-dimensional net structure, and has the characteristics of high porosity, high mechanical strength, good flexibility and convenience for formation; the porosity can be regulated within a large range; and the synthesized molecular sieve membrane is thin and is good in continuity.

Description

Technical field [0001] The invention involves the field of porosity sieve film composite materials and the technical fields of the in areas of adsorption and catalytic. It is specifically a paper -shaped sintering metal fiber load molecular sieve film and preparation method. Background technique [0002] The molecular sieve has a regular microphole channel, which allows small molecules to pass through and large molecules does not pass. Therefore, molecular screens are widely used in separation and adsorption.In the past few decades, a large number of researchers have been committed to studying molecular sieves that can be applied to adsorption separation and catalytic. [0003] Molecular screening film mainly includes NAA type, NAX type, Nay type, MFI type (ZSM-5, Silicalite-1), MOR type, CHA (SAPO34) type, P type, and ETS-4 titanium molecular sieve film.Because the molecular sieve itself has adsorption and catalytic performance, it can be used in the molecular screen reactor.In ...

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Problems solved by technology

Domestic East China Normal University Lu Yong and South China University of Technology Zhang Huiping (Chinese application number 200510028873.4, publication number CN1762909A; application number 200610025844.7, publication number CN 1836779A; application number 200710026410.3, publication number CN 101007270A) use glass fiber, ceramic fiber and metal Fiber-coated SiO2, Al2O3 and activated carbon particles have prepared composite materials, but there is no report on paper-like sintered metal fiber loading Preparation of Composite Materials of Molecular Sieve Membranes

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