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Separation of gas and organic/water mixtures by MFI type zeolite membranes synthesized in a flow system
Date
2010-01-01
Author
Soydas, Belma
Dede, Oezlem
Culfaz, Ali
Kalıpçılar, Halil
Metadata
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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MFI type zeolite membranes were synthesized in a recirculating flow system at 95 degrees C where the synthesis solution was flown over the tubular alpha-alumina supports. The performance of the membranes for the separation of binary gas mixtures and alcohol/water liquid mixtures was investigated. A membrane synthesized by two consecutive synthesis steps had a separation selectivity of 15 and 11 for equimolar mixtures of n-C4H10/CH4 and n-C4H10/N-2 at 200 degrees C, respectively. The membrane selectively permeated large nC(4)H(10) over small CH4 and N-2, suggesting that the separation is essentially adsorption-based and the membrane has few nonselective intercrystalline pores. The selectivities in the pervaporation separation of 5% ethanol/95% water mixture were 43 and 23 with permeate fluxes of 0.2 and 1.9 kg/m(2) h at 25 and 85 degrees C, respectively. The separation performance of membranes showed that MFI type membranes prepared in a recirculating flow system can be used both in the separation of gas and liquid mixtures.
Subject Keywords
General Materials Science
,
Mechanics of Materials
,
General Chemistry
,
Condensed Matter Physics
URI
https://hdl.handle.net/11511/43148
Journal
MICROPOROUS AND MESOPOROUS MATERIALS
DOI
https://doi.org/10.1016/j.micromeso.2009.07.004
Collections
Department of Chemical Engineering, Article