Hydrogen separation using silica-based composite membranes.

Kajama, Mohammed Nasir; Nwogu, Ngozi Claribelle; Gobina, Edward

Abstract

Silica sol-gel membranes have been developed for moderate temperature (300°C) separation of hydrogen (H2) from nitrogen (N2), methane (CH4) and argon (Ar) gas molecules. Tubular ceramic support with 15 nm nominal pore diameter and 45% porosity was modified by dip-coating method. Gas permeation characteristics were evaluated. Defect free silica layer over the substrate for hydrogen gas separation was obtained. Hydrogen gas permeate flux of 4.82x10-1 mol/sec m2 at 1.0 barg feed pressure was obtained. Selectivities of H2 over N2, CH4 and Ar of 3.07, 2.23 and 3.75 at 300°C, 200°C and 300°C and 0.9 barg were obtained with the silica membranes. The gas permeation and the selectivity performance of the membrane were evaluated.

Citation

KAJAMA, M.N., NWOGU, N.C. and GOBINA, E. 2014. Hydrogen separation using silica-based composite membranes. Advanced materials research [online], 1051: selected papers from the 2014 international conference on green materials and environmental engineering (GMEE 2014), 21-22 September 2014, Hong Kong, China, pages 107-111. Available from: https://doi.org/10.4028/www.scientific.net/AMR.1051.107

• Presentation Conference Type: Conference Paper (published)
• Conference Name: 2014 International conference on green materials and environmental engineering (GMEE 2014)
• Start Date: Sep 21, 2014
• End Date: Sep 22, 2014
• Acceptance Date: Sep 12, 2014
• Online Publication Date: Oct 31, 2014
• Publication Date: Oct 31, 2014
• Deposit Date: Sep 15, 2016
• Publicly Available Date: Sep 15, 2016
• Journal: Advanced materials research
• Print ISSN: 1022-6680
• Electronic ISSN: 1662-8985
• Publisher: Trans Tech Publications
• Peer Reviewed: Peer Reviewed
• Volume: 1051
• Pages: 107-111
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1051.107
• Keywords: Dip coating; Gas permeation; Hydrogen separation; Silica membrane
• Public URL: http://hdl.handle.net/10059/1713
• Contract Date: Sep 15, 2016