Das, Jugal Kishore and Das, Nandini and Bandyopadhyay, Sibdas (2012) Highly selective SAPO 34 membrane on surface modified clay-alumina tubular support for H-2/CO2 separation. International Journal of Hydrogen Energy, 37 (13). pp. 10354-10364. ISSN 0360-3199

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Abstract

The formation and growth of Silicoaluminophosphate (SAPO 34) zeolite membrane was developed on the low cost indigenous clay alumina tubular substrate modified by cationic polymer as an intermediate layer. The amino (-NH2) and hydroxyl (-OH) groups on the backbone of polymer are responsible for hydrogen bonding between zeolite surface and support surface. Seeding of the support surface accelerates the zeolite crystallization and enhances the formation of homogenous SAPO 34 membrane layer. The seeds were synthesized by hydrothermal process and used to provide nucleation for the membrane growth. The synthesized membranes along with seed crystals were characterized by XRD, FTIR, FESEM, TEM and EDAX analysis. The performance of the membrane formed was evaluated by single gas as well as mixture gas permeation measurement for H-2 and CO2. The H-2/CO2 separation selectivity of the membrane increased upto 5.88 at room temperature which is more than reported values and the reproducibility towards gas permeation and selectivity of SAPO 34 membrane shows excellent result. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

Item Type:	Article
Uncontrolled Keywords:	SAPO 34 zeolite membrane; Clay-alumina; Nucleation; Crystallization; Intermediate layer; Hydrogen bonding
Subjects:	Engineering Materials
Divisions:	Ceramic Membrane
Depositing User:	Bidhan Chaudhuri
Date Deposited:	26 Jul 2012 10:01
Last Modified:	13 Mar 2016 16:42
URI:	http://cgcri.csircentral.net/id/eprint/1660

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