A study of silicalite-1 and Al-ZSM-5 membrane synthesis on stainless steel supports

Mabande G, Pradhan G, Schwieger W, Hanebuth M, Dittmeyer R, Selvam T, Zampieri A, Baser HH, Herrmann R (2004)


Publication Status: Published

Publication Type: Journal article

Publication year: 2004

Journal

Publisher: Elsevier

Book Volume: 75

Pages Range: 209-220

DOI: 10.1016/j.micromeso.2004.07.009

Abstract

Silicalite-1 and Al-ZSM-5 membranes were prepared by combining one-step in situ seeding with one secondary membrane growth step. For membranes prepared under similar conditions, Al-ZSM-5 membrane growth was found to be considerably slower than Silicalite-1 growth leading to a significantly higher preferred axial orientation of the Silicalite-1 membranes. H(2)/SF(6) single gas permeation measurements revealed that for both membrane types a correlation existed between the H(2)/SF(6) ideal perm-selectivities and the zeolite layer thickness. Above a certain thickness the defect density is independent of layer thickness. However, Al-ZSM-5 membrane perm-selectivities were higher, despite lower membrane thicknesses and comparable hydrogen permeation rates. For example, room temperature ideal H(2)/SF(6) perm-selectivities of about 136 and 65 were measured for a 7.5 mum thick Al-ZSM-5 and a 45 mum thick Silicalite-1 membrane, respectively. Comparison to literature data revealed that the membranes were of good quality. Moreover, reproducibility of the membrane synthesis procedure proved to be good. (C) 2004 Elsevier Inc. All rights reserved.

Authors with CRIS profile

How to cite

APA:

Mabande, G., Pradhan, G., Schwieger, W., Hanebuth, M., Dittmeyer, R., Selvam, T.,... Herrmann, R. (2004). A study of silicalite-1 and Al-ZSM-5 membrane synthesis on stainless steel supports. Microporous and Mesoporous Materials, 75, 209-220. https://dx.doi.org/10.1016/j.micromeso.2004.07.009

MLA:

Mabande, Godwin, et al. "A study of silicalite-1 and Al-ZSM-5 membrane synthesis on stainless steel supports." Microporous and Mesoporous Materials 75 (2004): 209-220.

BibTeX: Download