Enhancing co-production of H2 and syngas via water splitting and POM on surface-modified oxygen permeable membranes
In this article, we report a detailed study on co‐production of H2 and syngas on La0.9Ca0.1FeO3−δ (LCF‐91) membranes via water splitting and partial oxidation of methane, respectively. A permeation model shows that the surface reaction on the sweep side is the rate limiting step for this process on...
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Published in | AIChE journal Vol. 62; no. 12; pp. 4427 - 4435 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
New York
Blackwell Publishing Ltd
01.12.2016
American Institute of Chemical Engineers |
Subjects | |
Online Access | Get full text |
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Summary: | In this article, we report a detailed study on co‐production of H2 and syngas on La0.9Ca0.1FeO3−δ (LCF‐91) membranes via water splitting and partial oxidation of methane, respectively. A permeation model shows that the surface reaction on the sweep side is the rate limiting step for this process on a 0.9 mm‐thick dense membrane at 990°C. Hence, sweep side surface modifications such as adding a porous layer and nickel catalysts were applied; the hydrogen production rate from water thermolysis is enhanced by two orders of magnitude to 0.37 μmol/cm2•s compared with the results on the unmodified membrane. At the sweep side exit, syngas (H2/CO = 2) is produced and negligible solid carbon is found. Yet near the membrane surface on the sweep side, methane can decompose into solid carbon and hydrogen at the surface, or it may be oxidized into CO and CO2, depending on the oxygen permeation flux. © 2016 American Institute of Chemical Engineers AIChE J, 62: 4427–4435, 2016 |
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Bibliography: | ark:/67375/WNG-8FRDZQ7W-7 istex:3C30004F6BD35A9C15B6C7F9D91298B2D64E23A9 ArticleID:AIC15518 This work is invited to submit as a “Best Paper Initiative” paper in AIChE Journal by Dr. Dushyant Shekhawat (National Energy Technology Laboratory). It was identified by Dr. Shekhawat as the Best Presentation in the session “Fuel Processing for Hydrogen Production” of the 2015 AIChE Annual Meeting in Salt Lake City. |
ISSN: | 0001-1541 1547-5905 |
DOI: | 10.1002/aic.15518 |