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Date of Publication:2022-10-09

Journal:无机材料学报

Volume:29

Issue:04

Page Number:377-381

ISSN No.:1000-324X

Abstract:A "two-in-one" approach, namely, through deposition of APTES-ffinctionalized Al2O3 particles onto a coarse macroporous support, was applied to synthesize zeolitic imidazolate tramework-7 (ZIF-7) membranes. The effect of molar ratio of APTES and Al2O3 particles on the formation of ZIF-7 membranes were investigated in detail. When n(APTES:)n(Al2O3) =1:3, the obtained continuous and thin ZIF-7 membrane with thickness ranging from 2 to 3 mu m exhibited H-2 permeance at 4.70x10(-7) mol/(m(2).s.Pa). Its ideal molecular sieving selectivity of H-2/CO2 and H-2/N-2 was at 5.87 and 4.59, respectively.

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