Manufacturing method of rigid network microporous hydrogen separation membrane with high permeability and selectivity

Abstract

The invention relates to the field of improving a hydrogen separation membrane to efficiently extract high-purity hydrogen from mixed gas, and especially relates to a manufacturing method of a rigid network microporous hydrogen separation membrane with high permeability and selectivity. 3, 6, 12, 15-TBTPN is adopted as a precursor. According to the manufacturing method of the rigid network microporous hydrogen separation membrane with high permeability and selectivity, in order to prepare the hydrogen separation membrane which is high in structural rigidity and convenient for solution processing, the novel hydrogen separation membrane is prepared on the basis of a conjugated microporous polymer; and the material has a perfect porous structure shown in the specification. With the improved CMPs manufacturing method, the hydrogen separation membrane can maintain the high permeability, the rigid network structure of the hydrogen separation membrane can ensure the high permeability, the perfect porous structure can ensure the good selectivity, and the solution method preparation can be performed so as to conveniently produce and reduce the cost;.

Description

technical field [0001] The invention relates to the field of efficiently extracting high-purity hydrogen from mixed gases by improving hydrogen separation membranes, in particular to a method for manufacturing a rigid network microporous hydrogen separation membrane with high permeability and selectivity. Background technique [0002] Gas membrane separation technology is a new type of chemical separation technology. Because of its low energy consumption, low investment, small footprint and convenient use, it has been widely used in petrochemical and chemical industries. Hydrogen membrane separation technology is mainly used to separate and concentrate hydrogen from a mixture containing hydrogen and other gases. The reason why it occupies such an important position in gas membrane separation technology is not only because of the importance of hydrogen in clean energy, chemical and petrochemical industries, but also because of the technical applicability and economic rationa...

AI Technical Summary

Problems solved by technology

[0007] In recent years, great progress has been made in microporous solid materials with rigid network structures and perfect pore structures, such as zeolites and metal-organic frameworks (Metal-Organic Frameworks, MOFs), a class of MOFs assembled from organic ligands and metal nodes The porous crystalline material, the film made of this kind of material has high permeability and good selectivity, but because the processing method is relatively complicated and the cost is high, it cannot be produced quickly and effectively by the solution method

[0008] Porous Organic Cages (POC) and Polymers of Intrinsic Microporosity (PIM) are a new class of porous materials that have emerged in recent years. Although they can be processed in solution, their structural stability is insufficient.

Conjugated Microporous polymers (CMPs) are π-conjugated cross-linked networks interconnected by aryl-aryl covalent bonds, which have strong structural stability, but poor processability and poor pore size distribution. width Difficult to use for gas separation

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