Microstructure, strength and CO2separation characteristics ofα-alumina supportedγ-alumina thin film membrane

Autor: Fariborz Sharifian Jazi, Sanam Abedini, Nader Parvin, Parviz Ashtari
Rok vydání: 2013
Předmět:
Zdroj: Advances in Applied Ceramics. 112:17-22
ISSN: 1743-6761
1743-6753
DOI: 10.1179/1743676112y.0000000043
Popis: AbstractIn this work, a mesoporous γ-Al2O3 membrane was synthesised on an α-Al2O3 substrate by a sol–gel dip coating process. The membranes were characterised using SEM, field emission SEM, X-ray diffractometry and N2 adsorption/desorption measurements (Brunauer–Emmett–Teller analyses). The characterisation results revealed that a flawless γ-alumina membrane layer with 3·5 μm thickness and 2·1 nm average pore size was achieved. Subsequent separation tests indicated that CO2 could be separated from N2 by the mesoporous γ-Al2O3 membrane. In spite of the difficulties of the separation, the optimised microstructure achieved for the prepared membrane led to desirable and regular permeation behaviour. It was also observed that separation could be more efficient in high pressure permeation conditions. The prepared substrate fulfilled the required strength and permeability for the thin γ-Al2O3 membrane film under these conditions. Accordingly, an optimised completely ceramic membrane structure, applicable...
Databáze: OpenAIRE
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