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Novel mixed matrix membrane for gas separation, and preparation method thereof

A mixed matrix membrane and gas separation technology, which is applied in semipermeable membrane separation, chemical instruments and methods, membrane technology, etc., can solve the problems of high preparation cost and difficulty in processing, and achieve the purpose of increasing adsorption active centers, improving strength and durability properties, increasing the specific surface area

Active Publication Date: 2019-01-11
杭州博大净化设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, inorganic membrane materials also face some challenges, for example, it is difficult to process large-area continuous membranes, and the preparation cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Zeolite-AlN / SiO 2 Preparation of nanoparticles 1:

[0028] This implementation prepares zeolite-AlN / SiO 2 The steps for nanoparticles are as follows:

[0029] Zeolite modification: roast 100g of zeolite at 300°C for 60 minutes, take it out and cool it, then put it into 35wt% hydrochloric acid solution and heat it to reflux for 8 hours, take it out, wash it, dry it, and set it aside;

[0030] Aluminum powder activation: 120g of aluminum powder and zirconia are milled in argon atmosphere at low temperature and high energy for 30h at 5°C, the ball milling speed is 500rpm, the mass ratio of zirconia to aluminum powder is 10:1, and activated aluminum is obtained after ball milling pink;

[0031] Zeolite-AlN / SiO 2 Preparation of nanoparticles: After the activated aluminum powder, zeolite, 40g of silicon dioxide, 10g of lithium hydroxide monohydrate, and 30g of polyetheretherketone particles are mixed uniformly by mechanical stirring, they are put into a high-te...

Embodiment 2

[0032] Example 2: Zeolite-AlN / SiO 2 Preparation of nanoparticles two:

[0033] This implementation prepares zeolite-AlN / SiO 2The steps for nanoparticles are as follows:

[0034] Zeolite modification: roast 100g of zeolite at a temperature of 330°C for 45 minutes, take it out and cool it, then put it into 38wt% hydrochloric acid solution and heat it to reflux for 7 hours, take it out, wash it, dry it, and set it aside;

[0035] Activation of aluminum powder: 120g of aluminum powder and zirconia are milled in an argon atmosphere at a low temperature and high-energy ball for 25 hours at 6°C, the ball milling speed is 500rpm, the mass ratio of zirconia to aluminum powder is 10:1, and activated aluminum is obtained after ball milling pink;

[0036] Zeolite-AlN / SiO 2 Preparation of nanoparticles: After the activated aluminum powder, zeolite, 40g of silicon dioxide, 10g of lithium hydroxide monohydrate, and 30g of polyetheretherketone particles are mixed uniformly by mechanical s...

Embodiment 3

[0037] Example 3: Zeolite-AlN / SiO 2 Preparation of nanoparticles three:

[0038] This implementation prepares zeolite-AlN / SiO 2 The steps for nanoparticles are as follows:

[0039] Zeolite modification: roast 100g of zeolite at 350°C for 30 minutes, take it out and cool it, then put it into 40wt% hydrochloric acid solution and heat it to reflux for 6 hours, take it out, wash it, dry it, and set it aside;

[0040] Activation of aluminum powder: 120g of aluminum powder and zirconia are milled in an argon atmosphere at a low temperature and high-energy ball for 30 hours at 10°C, the ball milling speed is 500rpm, and the mass ratio of zirconia to aluminum powder is 10:1, and activated aluminum is obtained after ball milling pink;

[0041] Zeolite-AlN / SiO 2 Preparation of nanoparticles: After the activated aluminum powder, zeolite, 40g of silicon dioxide, 10g of lithium hydroxide monohydrate, and 30g of polyetheretherketone particles are mixed uniformly by mechanical stirring, ...

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PUM

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Abstract

The invention discloses a novel mixed matrix membrane for gas separation and a preparation method thereof, belonging to the technical field of gas separation membranes. The matrix membrane comprises adouble-layer structure, wherein a lower layer is a support membrane, and an upper layer is a filtration membrane; the support membrane is a polysulfone porous membrane; the filtration membrane is a polymer membrane prepared through fusing-stretching of a high polymer material and a zeolite-AlN / SiO2 nanoparticle having a porous structure and used as an additive. The objective of the invention is to provide the novel mixed matrix membrane for gas separation and the preparation method thereof. The porous nanoparticle with a high specific surface area is added into the mixed matrix membrane so asto allow the mixed matrix membrane to have good mechanical properties, excellent permeation performance and excellent separation and selection performance; and the mixed matrix membrane has excellentseparation effect on gases.

Description

technical field [0001] The invention relates to the technical field of gas separation membranes, in particular to a novel mixed matrix membrane for gas separation and a preparation method thereof. Background technique [0002] The principle of gas separation by membrane materials is to use the difference in the speed of different gases passing through the separation membrane to enrich different gas components on different sides of the membrane. Compared with the traditional gas separation strategy, this method has the advantages of high efficiency, low energy consumption, small footprint and easy operation, which is in line with the requirements of high-efficiency industry and green industry in the new era. The key parameters used to measure the performance of gas separation membranes are permeability and selectivity. A membrane with high permeability can use less membrane material, which is more economical; a membrane with high selectivity can pass fewer separation times. ...

Claims

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Application Information

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IPC IPC(8): B01D71/68B01D69/10B01D67/00
CPCB01D67/0079B01D69/10B01D71/68
Inventor 李可心李士华
Owner 杭州博大净化设备有限公司
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