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

A technology of sintering metal and supporting molecules, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve problems such as the preparation of composite materials that have not been reported, achieve enhanced adsorption and catalytic efficiency, reduce volume and weight, The effect of reducing the pressure drop in the bed

Inactive Publication Date: 2012-06-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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

Examples

Experimental program
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Effect test

Embodiment 1

[0030] (1) Preparation method of paper-like sintered stainless steel fiber carrier

[0031] Add 3g coniferous wood fiber and 6g stainless steel fiber into appropriate amount of water, and stir at high speed for 10min in a fiber standard dissociator to form a uniform slurry, in which the diameter of the stainless steel fiber is 6.5μm. The uniformly mixed slurry is sliced ​​with a slicer, and a wet filter cake is formed after water filtration. The filter cake was pressed under a pressure of 3 bar and dried at 105° C. for 120 min. Put the dried precursor in N 2 Sintering at 1050° C. for 40 minutes under gas protection to obtain a paper-like sintered stainless steel microfiber carrier, and the gas flow rate was controlled at 200 ml / min.

[0032] (2) The preparation method of MFI molecular sieve membrane, including the following steps:

[0033] A) Vector pretreatment ：

[0034] Cut the carrier into a suitable size, and use 10wt% NaOH aqueous solution and 10wt% H 2 SO 4 The a...

Embodiment 2

[0043] Except the following difference, all the other are the same as embodiment 1.

[0044] The metal fiber used in step (1) is copper fiber with a diameter of 6.5 μm, the amount of coniferous wood fiber and copper fiber added are 3 g and 4 g respectively, the sintering temperature is 900° C., and the sintering time is 35 min.

Embodiment 3

[0046] Except the following difference, all the other are the same as embodiment 1.

[0047] The metal fiber used in the step (1) is an alloy fiber of iron, cobalt and vanadium, which contains 52% cobalt and 9% to 23% vanadium, and its diameter is 2.5 μm. The amount of coniferous wood fiber and alloy fiber 1g and 4g respectively, the sintering temperature is 900°C, and the sintering time is 30min.

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/10B01D71/02B01D67/00
Inventor 张会平陈焕浩鄢瑛
Owner SOUTH CHINA UNIV OF TECH
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