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Date of Publication:2022-10-10

Journal:化工学报

Volume:57

Issue:4

Page Number:987-991

ISSN No.:0438-1157

Abstract:Respectively in the systems of pyrrodine and 1-Butylamine as templates,
   ZSM-35 type zeolite membranes were hydrothermally synthesized originally
   in situ on the outer surface of porous a-Al2O3 tubes with pore size of
   3-5mum. Characterization of the as-prepared membranes with XRD and SEM
   showed that the prepared membranes were typical zeolite ZSM-35
   membranes, on which the zeolite crystals grew interlockedly and
   compactly and covered completely the outer surface of the ceramic tubes
   with thickness of about 12-18 mum, and that templates with different
   structures influenced apparently the morphology of the as-prepared
   membranes; calcinations of as-synthesized membranes at different
   temperatures indicated the orientation of crystals on the as-prepared
   membranes tended to be along （h 0 0） direction with increasing
   calcination temperatures; and at ambient temperature, H2, N2 and C3H8
   single component permeance tests of the membranes reached the order of
   magitude 10^-6 with H2/N2 and H2/C3H8 selectivity factors respectively
   above their corresponding ideal Knudsen diffusion factors.

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