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Effect of Soda Concentration on the Morphology of MFI-Type Zeolite Membranes
Date
2009-01-01
Author
Soydas, Belma
Culfaz, Ali
Kalıpçılar, Halil
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MFI-type zeolite membranes were hydrothermally synthesized as a thin layer on macroporous -alumina discs coated with 1m MFI-type seed crystals as seed. The effect of soda (Na2O) concentration on the morphology of the membranes was investigated. Soda concentration, and thus the hydroxyl ion concentration, was changed between 0.25 and 6.5 mol/mol gel. At low soda concentrations the crystals forming the layer exhibited mostly (h0h)/c-axis orientation, but at high soda concentrations a membrane layer formed from randomly oriented crystals. The membranes showed high H-2/n-butane ideal selectivity of 476 and 36 at 25 degrees C and 150 degrees C, respectively.
Subject Keywords
General Chemistry
,
General Chemical Engineering
URI
https://hdl.handle.net/11511/35570
Journal
CHEMICAL ENGINEERING COMMUNICATIONS
DOI
https://doi.org/10.1080/00986440802290144
Collections
Department of Chemical Engineering, Article
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
B. Soydas, A. Culfaz, and H. Kalıpçılar, “Effect of Soda Concentration on the Morphology of MFI-Type Zeolite Membranes,”
CHEMICAL ENGINEERING COMMUNICATIONS
, vol. 196, pp. 182–193, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35570.