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Date of Publication:2022-10-06

Journal:过程工程学报

Issue:1

Page Number:71-74

ISSN No.:1009-606X

Abstract:The silicalite-1 zeolite membrane was prepared by secondary synthesis on the porous α-Al2O3 support. The samples were characterized by XRD and SEM, and the permeant selectivity of the membrane was characterized by single-gas at room temperature. The results showed that the membrane re-grew, its thickness was about 8~10 μm and the ideal separation factors were 3.9 for H2/N2 and 19.1 for H2/C3H8 at room temperature, respectively, which are larger than the Knudsen diffusion ratios 3.74 for H2/N2 and 4.69 for H2/C3H8, the permeation rate of H2 was 1.43×l0-6mol/(m2·s·Pa). The data of gas permeation indicated that the membrane was defect-free.

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