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Uniformly a ‐Oriented MFI Zeolite Films by Secondary Growth
Author(s) -
Choi Jungkyu,
Ghosh Shubhajit,
Lai Zhiping,
Tsapatsis Michael
Publication year - 2006
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200503011
Subject(s) - molecular sieve , zeolite , membrane , materials science , chemical engineering , crystallization , petrochemical , thin film , nanotechnology , adsorption , catalysis , organic chemistry , chemistry , engineering , biochemistry
Oriented assembly of zeolite crystals on a porous support followed by secondary growth leads to continuous, thin, uniformly oriented zeolite films (see picture for a cross‐sectional SEM image) of MFI with the 5.1×5.5‐Å zigzag channels perpendicular to the support. These a ‐oriented films along with their previously reported b ‐oriented counterparts are the first set of thin molecular‐sieve membranes with uniform but drastically different orientations.