Preparation of Perfective TAPO-5 Membrane through Tertiary Growth with Amorphous Seed

doi:10.15541/jim20140566

Abstract

Abstract:

TAPO-5 membranes were synthesized through a tertiary growth method. Its perfection significantly depends on the adopted seed and itself poly-crystalline structure. Amorphous seed synthesized at a low crystallization temperature (393 K), obviously favors producing the perfective TAPO-5 membrane. TAPO-5 crystal seed, however, induces the growth of its membrane with a larger extent of cracks (i.e., grain boundary defect), destructing itself perfection. Those diverse results are associated with the disparate seeds layers deposited by a spreading-wetting method, and consistently demonstrated by SEM, XRD, and single gas (He) permeation test. A typical feature of the amorphous TAPO-5 seed layer is its dispersive distribution pattern in the macro holes of support. A continuous layer, however, is observed for the TAPO-5 crystal seed layer. The amorphous seed is explained as a prior seed for the perfective TAPO-5 membrane.

Key words: tertiary growth, amorphous seed, TAPO-5 membrane, spreading-wetting method

CLC Number:

TQ174

LIU Xu-Guang, MA Xin, LIU Yong, ZHANG Bao-Quan. Preparation of Perfective TAPO-5 Membrane through Tertiary Growth with Amorphous Seed[J]. Journal of Inorganic Materials, 2015, 30(5): 555-560.

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