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Facilitated transport membrane based on amino acid ionic liquid and preparation method and application of facilitated transport membrane

A technology that promotes the transfer of membranes and ionic liquids, applied in the field of membrane separation, can solve problems such as limiting the application field of FTMs, and achieve the effect of improving gas separation performance and simple preparation process.

Active Publication Date: 2018-04-06
SHIHEZI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of FTMs is that they need to be in a wet state to promote CO 2 transfer
This shortcoming limits the application field of FTMs in practical industry

Method used

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  • Facilitated transport membrane based on amino acid ionic liquid and preparation method and application of facilitated transport membrane
  • Facilitated transport membrane based on amino acid ionic liquid and preparation method and application of facilitated transport membrane
  • Facilitated transport membrane based on amino acid ionic liquid and preparation method and application of facilitated transport membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Prepare a facilitated transport membrane based on amino acid ionic liquid, the thickness of the facilitated transport membrane is 110 μm, the facilitated transport membrane uses polyether-polyamide block copolymer as the membrane matrix, and 1-hexyl 3-methanol is added to the membrane matrix Glycine salt of imidazole, wherein, the mass ratio of polyether-polyamide block copolymer to 1-hexyl 3-methylimidazole glycinate is 1:0.2, and the specific preparation method is as follows:

[0021] Step 1, take by weighing 0.5g polyether-polyamide block copolymer (trade name is 1657) was dissolved in 12 g of a 70% ethanol aqueous solution, stirred at 80° C. for 24 h, so that the polyether-polyamide block copolymer was completely dissolved, and the prepared polyether-polyamide block copolymer was 4% in mass fraction solution, set aside.

[0022] Step 2. Weigh 0.1 g of 1-hexyl 3-methylimidazolium glycinate and add it to the 4% polyether-polyamide block copolymer solution obtained i...

Embodiment 2

[0025] Prepare a kind of facilitated transport membrane based on amino acid ionic liquid, the difference with embodiment 1 facilitated transport membrane is: the thickness of membrane is 120 μ m, wherein, polyether-polyamide block copolymer and 1-hexyl 3-methylimidazole The mass ratio of glycine salt is 1:0.4, the difference between the preparation of this facilitated transport membrane and the preparation method of Example 1 is that in step 1, 0.1 g of 1-hexyl 3-methylimidazolium glycinate is replaced by 0.2 g of 1-hexyl 3-methylimidazolium glycinate; a facilitated transport membrane with a thickness of 120 μm was finally obtained. figure 2 It is the scanning electron microscope sectional view of the polyether-polyamide block copolymer-1-hexyl 3-methylimidazolium glycinate facilitated transport membrane prepared in Example 2.

[0026] At room temperature and 2bar conditions, the facilitated transport membrane prepared in Example 2 was used to separate CO 2 10% CO by volume ...

Embodiment 3

[0028] Prepare a kind of facilitated transport membrane based on amino acid ionic liquid, the difference with embodiment 1 facilitated transport membrane is: the thickness of membrane is 138 μ m, wherein, polyether-polyamide block copolymer and 1-hexyl 3-methylimidazole The mass ratio of glycinate is 1:0.6. The difference between the preparation of this facilitated transport membrane and the preparation method of Example 1 is that in step 1, 0.1 g of 1-hexyl 3-methylimidazolium glycinate is replaced by 0.3 g of 1-hexyl 3-methylimidazolium glycinate; finally a facilitated transport membrane with a thickness of 138 μm was obtained. image 3 It is the scanning electron microscope sectional view of the polyether-polyamide block copolymer-1-hexyl 3-methylimidazolium glycinate facilitated transport membrane prepared in Example 3.

[0029] At room temperature and 2bar conditions, the facilitated transport membrane prepared in Example 2 was used to separate CO 2 10% CO by volume 2 / ...

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Abstract

The invention discloses a facilitated transport membrane based on amino acid ionic liquid and a preparation method and application of the facilitated transport membrane. The facilitated transport membrane based on the amino acid ionic liquid is characterized by adopting a polyether-polyamide block copolymer as a membrane substrate, and 1-hexyl-3-methylimidazole glycinate is added into the membranesubstrate. The facilitated transport membrane has a simple preparation process, and due to 1-hexyl-3-methylimidazole glycinate which is contained in the facilitated transport membrane and provided with an amino group and a carboxyl functional group, the gas separation performance of the facilitated transport membrane can be improved.

Description

technical field [0001] The invention relates to the field of membrane separation, in particular to an amino acid ionic liquid-based facilitated transport membrane and its preparation method and application. Background technique [0002] With the increasing global warming, the release of greenhouse gases has attracted more and more attention from the scientific community, the public and governments. In recent years, compared with traditional separation technology, membrane separation technology has the advantages of high efficiency, simple operation, simple equipment and less investment. In several classes of CO 2 Among separation membranes, polymer membranes have been extensively studied, however, the CO 2 Permeability and CO 2 / Gas selectivity is low. In order to overcome the defect of low separation performance of polymer membranes, room temperature ionic liquids (RTILs) have attracted extensive attention. RTILs are organic salts with good chemical and thermal stabil...

Claims

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Application Information

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IPC IPC(8): B01D71/80B01D71/82B01D67/00B01D53/22
CPCB01D53/228B01D67/0011B01D71/80B01D71/82B01D2256/22Y02C20/40
Inventor 李雪琴张金利郭瑞丽张海洋张旺龙
Owner SHIHEZI UNIVERSITY
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