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Preparation method and application of mixed matrix membrane containing MOF filler

A technology of mixed matrix membrane and matrix, applied in the field of preparation of mixed matrix, can solve the problems of weak bond interaction and interface affecting the performance of mixed matrix membrane, and achieve the effects of enhanced interaction, easy industrial application, and simple and easy preparation method.

Inactive Publication Date: 2019-11-15
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic porous fillers, such as molecular sieves and activated carbon, have weak bond interactions with polymers, and are prone to form undesirable interfaces that affect the performance of mixed matrix membranes.

Method used

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  • Preparation method and application of mixed matrix membrane containing MOF filler
  • Preparation method and application of mixed matrix membrane containing MOF filler
  • Preparation method and application of mixed matrix membrane containing MOF filler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 6.04g of P84 powder into 21.15g of N-methylpyrrolidone solvent, stir and dissolve at 50°C; 0.43g of nickel formate [Ni 3 (HCOO) 6 ] powder was added to 23.04g of N-methylpyrrolidone solvent, stirred at 50°C for 2h, ultrasonicated for 2h, and then [Ni 3 (HCOO) 6 ] / NMP suspension was added to P84 / NMP and stirred at 50°C for 24h, and the resulting solution was ultrasonically defoamed for 2h to obtain a casting solution. Finally, the casting solution was cast on a glass plate at 60° C., scraped with a 400 μm scraper to form a film, and then allowed to stand for 24 hours. The film was removed from the glass plate and dried under vacuum at 150 °C for 48 h to obtain [Ni 3 (HCOO) 6 ] / P84 mixed matrix membrane, its cross-sectional structure is shown in the attached figure 2 , as can be seen from the figure, [Ni 3 (HCOO) 6 ] The particles are uniformly dispersed in the polymer matrix, and the bonded interface is free of defects. The gas separation performance test (0...

Embodiment 2

[0037] Add 6.00g of P84 powder into 16.15g of N-methylpyrrolidone solvent, stir and dissolve at 50°C; 0.90g of nickel formate [Ni 3 (HCOO) 6 ] powder was added to 28.44g of N-methylpyrrolidone solvent, stirred at 50°C for 2h, ultrasonicated for 2h, and then [Ni 3 (HCOO) 6 ] / NMP suspension was added to P84 / NMP and stirred at 50°C for 24h, and the resulting solution was ultrasonically defoamed for 2h to obtain a casting solution. Finally, the casting solution was cast on a glass plate at 60° C., scraped with a 400 μm scraper to form a film, and then allowed to stand for 24 hours. The film was removed from the glass plate and dried under vacuum at 150 °C for 48 h to obtain [Ni 3 (HCOO) 6 ] / P84 mixed matrix membrane, its cross-sectional structure is shown in the attached image 3 , as can be seen from the figure, [Ni 3 (HCOO) 6] The particles are uniformly dispersed in the polymer matrix, and the bonded interface is free of defects. The gas separation performance test (0.5...

Embodiment 3

[0041] 6.02g P84 was added to 19.81g N-methylpyrrolidone solvent, stirred and dissolved at 50°C; 1.51g nickel formate [Ni 3 (HCOO) 6 ] powder was added to 27.02g of N-methylpyrrolidone solvent, stirred at 50°C for 2h, ultrasonicated for 2h, and then [Ni 3 (HCOO) 6 ] / NMP suspension was added to P84 / NMP and stirred at 50°C for 24 hours, and the resulting solution was ultrasonically defoamed for 2 hours to obtain a casting solution. Finally, the casting solution was cast on a glass plate at 60° C., scraped with a 400 μm scraper to form a film, and then allowed to stand for 24 hours. The film was removed from the glass plate and dried under vacuum at 150 °C for 48 h to obtain [Ni 3 (HCOO) 6 ] / P84 mixed matrix membrane. The gas separation performance (0.5MPa, 30°C) was tested by the constant volume change pressure method, and the test results are shown in Table 4.

[0042] Table 4

[0043]

[0044] From Comparative Example 1 and Example 1-Example 3, it can be seen that co...

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Abstract

The invention relates to a preparation method and application of a mixed matrix membrane containing MOF filler. The method provided by the invention adopts a metal organic frame material MOFs as the filler, takes a glassy polymer as the organic membrane material, and uses a solution mixing process to prepare the mixed matrix membrane (MMMs). The MOF material containing organic ligand has good combination with the polymer, thus avoiding defects. The prepared mixed matrix membrane has good application prospects.

Description

technical field [0001] The invention belongs to the technical field of gas separation membranes, in particular to a preparation method and application of a mixed matrix containing MOF fillers. Background technique [0002] As a clean energy, natural gas is used in industries such as industrial fuel, process production, natural gas chemical industry and natural gas vehicles. The acid gas CO contained in the extracted natural gas 2 etc. will reduce the calorific value of natural gas, and will corrode the pipeline, so the CO 2 Separation from natural gas is particularly important. CO 2 The separation methods include chemical absorption, adsorption, cryogenic separation and membrane separation methods, etc. Compared with other methods, membrane separation has the characteristics of low cost, simple operation, and environmental protection. [0003] Polymer membranes are limited by the trade-off relationship, that is (increase in permeability coefficient and decrease in selec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D67/00B01D69/14B01D53/22C10L3/10
CPCB01D53/228B01D67/0011B01D67/0013B01D69/141B01D2256/245B01D2257/504C10L3/104Y02C20/40
Inventor 任吉中盛鲁杰王树东郭亚赵丹邓麦村
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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