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Mixed matrix membrane combining metal organic framework and intrinsic microporosity polymer as well as preparation method and application thereof

A metal-organic framework and mixed matrix membrane technology, applied in separation methods, chemical instruments and methods, membrane technology, etc., to achieve high permeability, increase flux, and enhance capture effects

Active Publication Date: 2019-09-17
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The pure PIMs membrane prepared by the casting method has very dense micropores, which has 2-3 orders of magnitude higher permeability to gas than traditional polymers, and has certain selectivity, but its performance still needs to be further improved

Method used

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  • Mixed matrix membrane combining metal organic framework and intrinsic microporosity polymer as well as preparation method and application thereof

Examples

Experimental program
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Effect test

example 1

[0035] First, 0.5g of PIM-1 powder was dissolved in 10mL of chloroform solution and stirred for 1.5h to prepare a uniformly mixed PIM-1 solution; 0.3g of ZIF-8 was dissolved in 10mL of DMF solution and stirred for 2h to obtain a ZIF-8 solution; 0.25g of UIO -66-NH 2 Dissolve in 10mL DMF solution and stir for 2h to obtain uniform UIO-66-NH 2 solution; take 2mL ZIF-8 solution in the above 10mL PIM-1 solution, stir for 1h to obtain a uniformly dispersed mixed solution; then add 2mL UIO-66-NH 2 The solution was added to the mixture of the above two solutions, and stirred for 1 h to obtain a uniform PIM-1 / MOFs solution; the solution was injected into a petri dish with a syringe, and the mixed matrix film was obtained after the solvent evaporated naturally at room temperature to form a film.

[0036] Gas separation test was carried out on this membrane; the single-component CO 2 and CH 4 Permeability of the membrane results in CO 2 The permeability is 13231barrer, for CH 4 The ...

example 2

[0038]First, 0.5g of PIM-1 powder was dissolved in 10mLTHF solution, and stirred for 1.5h to prepare a uniformly mixed PIM-1 solution; 0.3g of ZIF-8 was dissolved in 10mL of DMF solution, and stirred for 2h to obtain a ZIF-8 solution; 0.25gUIO- 66-NH 2 Dissolve in 10mL DMF solution and stir for 2h to obtain uniform UIO-66-NH 2 solution; take 2mL ZIF-8 solution in the above 10mL PIM-1 solution, stir for 1h to obtain a uniformly dispersed mixed solution; then add 2mL UIO-66-NH 2 The solution was added to the mixture of the above two solutions, and stirred for 1 h to obtain a uniform PIM-1 / MOFs solution; the solution was injected into a petri dish with a syringe, and the mixed matrix film was obtained after the solvent evaporated naturally at room temperature to form a film.

[0039] Gas separation test was carried out on this membrane; the single-component CO 2 and CH 4 Permeability of the membrane results in CO 2 The permeability is 10275barrer, and the permeability to CH4 ...

example 3

[0041] First, 0.5g of PIM-1 powder was dissolved in 10mL of chloroform solution and stirred for 1.5h to prepare a uniformly mixed PIM-1 solution; 0.35g of ZIF-8 was dissolved in 10mL of DMF solution and stirred for 2h to obtain a ZIF-8 solution; 0.25g of UIO -66-NH 2 Dissolve in 10mL DMF solution and stir for 2h to obtain uniform UIO-66-NH 2 solution; take 2mL ZIF-8 solution in the above 10mL PIM-1 solution, stir for 1h to obtain a uniformly dispersed mixed solution; then add 2mL UIO-66-NH 2 The solution was added to the mixture of the above two solutions, and stirred for 1 h to obtain a uniform PIM-1 / MOFs solution; the solution was injected into a petri dish with a syringe, and the mixed matrix film was obtained after the solvent evaporated naturally at room temperature to form a film.

[0042] Gas separation test was carried out on this membrane; the single-component CO 2 and CH 4 Permeability of the membrane results in CO 2 The permeability is 10749barrer, and the perme...

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Abstract

The invention discloses a mixed matrix membrane combining metal organic framework and intrinsic microporosity polymer as well as preparation method and application thereof in the technical field of inorganic-organic composite separation. The preparation method of the mixed matrix membrane comprises the following steps: dissolving PIM-1 in an organic solvent A, and stirring uniformly to obtain a solution B; dissolving ZIF-8 in an organic solvent C, and stirring uniformly to obtain a solution D; dissolving UIO-66-NH2 in an organic solvent E, and stirring uniformly to obtain a solution F; mixing the solution D with the solution B to obtain a uniformly mixed solution G; adding the solution F into the solution G, and stirring uniformly to obtain a uniformly mixed solution H; applying the solution H to a base or a mould, and placing for 48h at room temperature to obtain the mixed matrix membrane. The mixed matrix membrane disclosed by the invention is used to separate CO2 / CH4 gas, and realizes relatively high ideal selectivity and permeability on CO2 / CH4 gas.

Description

technical field [0001] The invention belongs to the technical field of inorganic-organic composite separation, and in particular relates to a mixed matrix membrane composed of a metal-organic framework and a self-porous polymer, and a preparation method and application thereof. Background technique [0002] Self-porous polymers (PIMs) are a new type of material. Due to the macromolecular chains in the rigid monomer and the twisted structure, the micropores generated by the molecular chains cannot be effectively stacked in space, and have an interconnection of less than 2 nanometers. Connected pores are widely used in gas adsorption separation and pervaporation. The pure PIMs membrane prepared by the casting method has very dense micropores, has 2-3 orders of magnitude higher gas permeability than traditional polymers, and has certain selectivity, but its performance still needs to be further improved. PIM-1 is a common type of PIMs, which is synthesized from two monomers wi...

Claims

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Application Information

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IPC IPC(8): B01D71/82B01D69/02B01D67/00B01D53/22
CPCB01D71/82B01D69/02B01D67/0079B01D53/228B01D2256/22B01D2256/245Y02C20/40
Inventor 侯蕊苏鹏程李洋徐泽海张国亮
Owner ZHEJIANG UNIV OF TECH
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