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Effect of Mesoporous Silica Buffer Layer on the Orientation of MFI Zeolite Membranes
Author(s) -
Zhang FaZhi,
Fuji Masayoshi,
Takahashi Minoru
Publication year - 2005
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.00386.x
Subject(s) - membrane , layer (electronics) , chemical engineering , materials science , substrate (aquarium) , mesoporous material , zeolite , crystallization , porosity , mesoporous silica , buffer (optical fiber) , chemistry , nanotechnology , composite material , catalysis , organic chemistry , telecommunications , biochemistry , oceanography , geology , computer science , engineering
Growth of MFI zeolite membranes on porous α‐alumina substrates with and without precoated mesoporous silica buffer layer has been performed by in situ crystallization. A preferentially b ‐oriented MFI membrane can be prepared on a mesoporous silica‐coated substrate. A membrane with a randomly oriented and eventually [ h 0 h ]‐oriented top layer is obtained on an uncoated α‐alumina substrate. The chemical properties of the substrate are suggested to have significant effects on the membrane orientation.