Preparation and Characterization of SAPO-34 and SAPO-44 Molecular Sieves Membranes

Abstract

Abstract: Molecular sieve membranes consisting of SAPO-24 and SAPO-44 molecular sieve crystals have been hydrothermally prepared on the ceramic substrate in the Al₂O₃-SiO₂-H₃PO₄-H₂O-amine system. X-ray diffraction verified the presence of the pure molecular sieve phases on the substrate, and the SEMshowed that the SAPO-34 and SAPO-44 molecular sieve crystals had grown together to form a continuous molecular sieve layer. The influences of silica content, HFcontent, pHvalue in the memberanes formations have been studied.

Key words: SAPO-34 molecular sieve membranes, SAPO-44 molecular sieve membranes, Hydrothermal method, Characterization

CLC Number:

O614

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LIU Yun-Ling, WANG Xing-Dong, PANG Wen-Qin . Preparation and Characterization of SAPO-34 and SAPO-44 Molecular Sieves Membranes[J]. Chem. J. Chinese Universities, 2000, 21(10): 1451.

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Preparation and Characterization of SAPO-34 and SAPO-44 Molecular Sieves Membranes

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