▎ 摘　　要

NOVELTY - Preparation of mixed matrix gas separation membrane of tetrazole-based self-polymerization microporous polymer/graphene oxide mixed matrix membrane involves (s1) carrying out polymerization reaction of 5,5',6,6'-tetrahydroxyl-3,3,3', 3'-tetramethyl-1,1'-spirobiindole and tetrafluoroterephthalonitrile to obtain a self-prepared self-polymerized microporous polymer (PIM-1), (s2) carrying out 2 +3 cycloaddition reaction by adding the PIM-1 to sodium azide and anhydrous zinc chloride to obtain a tetrazolyl self-polymerized microporous polymer (TZ-PIM-1), (s3) dissolving the TZ-PIM-1 using N, N-dimethylacetamide (DMAc), (s4) adding graphene oxide (GO) into DMAc, stirring to obtain a uniform graphene oxide dispersion liquid, (s5) stirring the polymer solution obtained in the step (s2) and polymer solution obtained in the step (s4), paving into a film, and soaking into methanol. USE - Preparation of mixed matrix gas separation membrane of tetrazole-based self-polymerization microporous polymer/graphene oxide mixed matrix membrane. ADVANTAGE - The mixed matrix gas separation membrane has excellent gas permeability and separation performance, and has excellent thermal stability and physical aging resistance. DETAILED DESCRIPTION - Preparation of mixed matrix gas separation membrane of tetrazole-based self-polymerization microporous polymer/graphene oxide mixed matrix membrane involves (s1) carrying out polymerization reaction of 5,5',6,6'-tetrahydroxyl-3,3,3', 3'-tetramethyl-1,1'-spirobiindole and tetrafluoroterephthalonitrile to obtain a self-prepared self-polymerized microporous polymer (PIM-1), (s2) carrying out 2 +3 cycloaddition reaction by adding the PIM-1 to sodium azide and anhydrous zinc chloride for substitution reaction to obtain a tetrazolyl self-polymerized microporous polymer (TZ-PIM-1), (s3) dissolving the TZ-PIM-1 using N, N-dimethylacetamide (DMAc) to obtain a polymer solution, (s4) adding graphene oxide (GO) into DMAc, stirring for 12 hours, ultrasonically treating for 72 hours at low temperature of 35℃ to obtain a uniform graphene oxide dispersion liquid, (s5) mixing and stirring the polymer solution obtained in the step (s2) and polymer solution obtained in the step (s4), paving the polymer solution into a film, and soaking the paved film into methanol.