Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 36, Issue 1, Pages 528-538Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2010.10.002
Keywords
Hydrogen production; Oxygen-permeation membrane; Surface-coating; Coke oven gas; Partial oxidation
Categories
Funding
- National High Technology Research and Development Program of People's Republic of China [2006AA11A189]
- Science and Technology Commission of Shanghai Municipality [0952NM01400]
- National Natural Science Foundation of People's Republic of China [51004069]
- Shanghai Postdoctoral Science Foundation [10R21412700]
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The perovskite-type oxygen separation membranes BaCo0.7Fe0.2Nb0.1O3-delta (BCFN) combined with Ce 0.8Re0.2O2-delta (Re = Sm, Gd) surface modification layers was investigated for hydrogen production by partial oxidation reforming of coke oven gas (COG). The Ce0.8Re0.2 O2-delta materials improve the oxygen permeation flux of the BCFN membrane by 8-31% under the COG atmosphere at 875 C. The high oxygen permeation flux achieved using the Ce0.8Gd0.2O2-delta surface-coating layer in this work is quite encouraging with a maximum value reaching 21.9 ml min(-1) cm(-2) at 900 degrees C. Characterization of the membrane surfaces by SEM and XRD after 100 h long life test show that the Ce0.8Gd0.2O2-delta surface-coating layer on the permeation side can dramatically withstand corrosion of the hash strong reductive working conditions, which will be promising surface modification material in the catalytic partial oxidation reforming of COG using oxygen-permeable ceramics. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
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