Hydrogen Separation Using Silica-Based Composite Membranes

Mohammed Nasir Kajama; Ngozi Claribelle Nwogu; Edward Gobina

doi:10.4028/www.scientific.net/AMR.1051.107

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1051Hydrogen Separation Using Silica-Based Composite...

Hydrogen Separation Using Silica-Based Composite Membranes

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.

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Periodical:

Advanced Materials Research (Volume 1051)

Pages:

107-111

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1051.107

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Online since:

October 2014

Authors:

Mohammed Nasir Kajama, Ngozi Claribelle Nwogu, Edward Gobina*

Keywords:

Dip-Coating, Gas Permeation, Hydrogen Separation, Silica Membrane

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* - Corresponding Author

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