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Co with both primary amine and carbonate groups 2 Separation membrane and its preparation method

A carbonate and primary amine-based technology, applied in separation methods, chemical instruments and methods, semi-permeable membrane separation, etc., can solve problems such as limited effect of functional carriers, and achieve simple, easy, low-cost, and synergistic coupling methods for membrane production The effect of effect enhancement

Active Publication Date: 2017-04-26
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the efficiency of the functional carrier can be improved to a certain extent through appropriate structural optimization modification, the above-mentioned CO 2 Separation-promoted transfer membranes contain only a single type of functional carrier, and the shortcomings of these functional carriers when used alone are still difficult to effectively avoid, resulting in limited effects of improving the efficiency of functional carriers

Method used

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  • Co with both primary amine and carbonate groups <sub>2</sub> Separation membrane and its preparation method
  • Co with both primary amine and carbonate groups <sub>2</sub> Separation membrane and its preparation method
  • Co with both primary amine and carbonate groups <sub>2</sub> Separation membrane and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take 8.0g of N-vinylformamide and 2.0g of diallyldimethylammonium chloride and add them to 40g of deionized water, stir evenly to form a monomer solution with a mass fraction of 20%, and then add azo Diisobutylamidine hydrochloride. After thorough stirring, the solution was transferred to a flask equipped with a condenser, and the polymerization reaction was carried out under the protection of nitrogen. After the polymerization reaction is finished, hydrochloric acid solution is added to the reaction system, and the hydrolysis reaction is carried out under the protection of nitrogen. The solution obtained by the hydrolysis reaction was added into ethanol, and the precipitated product was dissolved in deionized water and stirred thoroughly. Add strong basic anion exchange resin into the solution, carry out suction filtration treatment after fully stirring, and add ammonium carbonate to the solution obtained by suction filtration. Dialysis treatment is carried out after...

Embodiment 2

[0028] Take 2.0g of N-vinylformamide and 8.0g of diallyldimethylammonium chloride and add them to 40g of deionized water, stir evenly to form a monomer solution with a mass fraction of 20%, and then add azobis Isobutamidine hydrochloride. After thorough stirring, the solution was transferred to a flask equipped with a condenser, and the polymerization reaction was carried out under the protection of nitrogen. After the polymerization reaction is finished, hydrochloric acid solution is added to the reaction system, and the hydrolysis reaction is carried out under the protection of nitrogen. The solution obtained by the hydrolysis reaction was added into ethanol, and the precipitated product was dissolved in deionized water and stirred thoroughly. Add strong basic anion exchange resin into the solution, carry out suction filtration treatment after fully stirring, and add ammonium carbonate to the solution obtained by suction filtration. After sufficient stirring, dialysis trea...

Embodiment 3

[0032] Take 6.0g of N-vinylformamide and 3.0g of diallyldimethylammonium chloride and add them to 36g of deionized water, stir evenly to form a monomer solution with a mass fraction of 20%, and then add azobis Isobutamidine hydrochloride. After thorough stirring, the solution was transferred to a flask equipped with a condenser, and the polymerization reaction was carried out under the protection of nitrogen. After the polymerization reaction is finished, hydrochloric acid solution is added to the reaction system, and the hydrolysis reaction is carried out under the protection of nitrogen. The solution obtained by the hydrolysis reaction was added into ethanol, and the precipitated product was dissolved in deionized water and stirred thoroughly. Add strong basic anion exchange resin into the solution, carry out suction filtration treatment after fully stirring, and add ammonium carbonate to the solution obtained by suction filtration. Dialysis treatment is carried out after ...

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Abstract

The invention relates to a carbon dioxide separation membrane with primary amino groups and carbonate groups and a preparation method thereof; preparation of poly(vinylamine-diallyl dimethyl ammonium carbonate) copolymer and polyvinylamine or polydiallyl A blend of dimethyl ammonium carbonate; with polysulfone ultrafiltration membrane as a support, the blend is dissolved in deionized water, stirred and defoamed to obtain a coating solution; dried for a period of time under certain temperature and relative humidity conditions to obtain A CO2 separation membrane with both primary amine groups and carbonate groups. The invention realizes the synergistic coupling effect between different functional carriers: not only the efficiency of the functional carriers is enhanced, but also the disadvantages of various functional carriers when used alone are avoided. Excellent CO2 permeation selectivity performance: For CO2 / N2 mixed gas, under the feed gas pressure of 0.11-2.00MPa, the CO2 permeation rate is (137-1842)×10-6, and the CO2 / N2 separation factor is 23-160 .

Description

technical field [0001] The present invention relates to two kinds of primary amines with poly(vinylamine-diallyl dimethyl ammonium carbonate) copolymer and polyvinylamine / polydiallyl dimethyl ammonium carbonate blend as materials radical and carbonate CO 2 A separation membrane and a preparation method thereof belong to the technical field of gas separation membranes. Background technique [0002] Facilitated transport membranes are a class of CO with great application potential 2 separation membrane. Since the membrane contains CO 2 Functional carrier with reversible action to strengthen CO 2 of transfer, thus facilitated transfer membranes can simultaneously have high CO 2 Permeability and selectivity overcome the trade-off effect between permeability and selectivity commonly found in ordinary polymer membranes. Currently, for CO 2 The functional carriers contained in the separation-facilitated transfer membrane mainly include amine groups, carboxylate groups, carbo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/68B01D67/00B01D53/22
CPCY02C20/40
Inventor 王志李潘源廖家友王纪孝王世昌
Owner TIANJIN UNIV
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