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Preparation and application of polymer-aminated transition metal carbide blended membrane

A transition metal and carbide technology, which is used in the preparation and application of polymer-aminated transition metal carbide blend membranes, can solve problems such as high gas permeability and selectivity, and limited applications

Pending Publication Date: 2021-10-08
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Generally, polymer membranes are limited by the trade-off effect, and it is difficult to obtain high gas permeability and selectivity simultaneously, which greatly limits their further applications in the chemical industry.

Method used

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  • Preparation and application of polymer-aminated transition metal carbide blended membrane
  • Preparation and application of polymer-aminated transition metal carbide blended membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Weigh 1.4g of polyethylene glycol methyl ether acrylate, 0.6g of polyethylene glycol diacrylate, 0.0202g of f-MXene powder, and 0.002g of 1-hydroxycyclohexyl benzophenone in a glass bottle, stir well at room temperature, Mix f-MXene with the polymer evenly, and ultrasonically defoam in an ice-water bath to obtain a prepolymer solution. Pour the prepolymer solution onto a clean quartz plate, control the film thickness with a copper wire, cover another quartz plate, transfer it to an ultraviolet lamp, irradiate for 5 minutes and solidify to form a film, and peel off the film from the quartz plate to obtain Polymer-aminated transition metal carbide blend membranes.

[0040] The test conditions and methods were the same as in Comparative Example 1, CO 2 Gas permeability is 438.9 barrer, N 2 Gas permeability is 8.3barrer, CO 2 / N 2 The selectivity was 52.9.

Embodiment 2

[0042] The preparation method is consistent with that of Example 1, except that the mass of f-MXene powder is 0.0408g.

[0043] The test conditions and methods were the same as in Comparative Example 1, CO 2 Gas permeability is 380.3barrer, N 2 Gas permeability is 7.3barrer, CO 2 / N 2 The selectivity is 52.1.

Embodiment 3

[0045] The preparation method is the same as in Example 1, except that the mass of f-MXene powder is 0.0619g.

[0046] SEM characterization of the polymer-aminated transition metal carbide blend film prepared in Example 3, the structure is as follows figure 2 shown by figure 2 It can be seen that the f-MXene in the polymer-aminated transition metal carbide blend film prepared in this example has a two-dimensional sheet structure, which is evenly distributed in the film without obvious aggregation.

[0047] The test conditions and methods were the same as in Comparative Example 1, CO 2 Gas permeability is 915.3barrer, N 2 Gas permeability is 22.0barrer, CO 2 / N 2 The selectivity was 41.6.

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Abstract

The invention provides a polymer-aminated transition metal carbide blended membrane, and belongs to the field of gas membrane separation. The polymer-aminated transition metal carbide blended membrane is composed of a polyethylene glycol base membrane and aminated transition metal carbide (f-MXene) filled in the base membrane, wherein the introduced f-MXene has a uniform interlayer sub-nano channel and can be used for rapid permeation of CO2, and the f-MXene has good compatibility with a polymer matrix interface. Amino with affinity to CO2 is grafted on the surface of f-MXene, CO2 acting sites are increased, and the amino can generate reversible reaction with CO2, so that CO2 transfer is promoted, and the gas separation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of gas separation membranes, in particular to the preparation and application of a polymer-aminated transition metal carbide blend membrane. [0002] technical background [0003] With the rapid development of energy-driven fossil fuel consumption and industrialization, the global carbon cycle is disturbed, leading to global warming and extreme weather such as floods, droughts, and typhoons. As a greenhouse gas, carbon dioxide can absorb and limit heat radiation, and it can work together with other gases such as nitric oxide and methane to produce a greenhouse effect. Nearly 25% of the world's carbon dioxide is emitted as waste gas in the combustion process, and the use of various technologies to remove carbon dioxide in the flue gas has become an important topic in the scientific community. [0004] Compared with traditional methods for carbon dioxide capture and separation such as absorption, adsorption, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/52B01D67/00B01D53/22
CPCB01D71/52B01D67/0006B01D53/228Y02C20/40
Inventor 辛清萍张玉忠曹雪婷
Owner TIANJIN POLYTECHNIC UNIV
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