Enhancing co-production of H[subscript 2] and Syngas via Water Splitting and POM on Surface-Modified Oxygen Permeable Membranes
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enhancing co-production _final.pdf
Description
Main article
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978.47 KB
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Adobe PDF
Checksum (MD5)
028d58547c156120abcdee54871a1e31
Author(s)
Wu, Xiaoyu
Ghoniem, Ahmed F
Uddi, Mruthunjaya
Date Issued
October 2016
Journal
AIChE Journal
Publisher
Wiley Blackwell
Citation
Wu, Xiao-Yu, Ahmed F. Ghoniem, and Mruthunjaya Uddi. “Enhancing Co-Production of H[subscript 2] and Syngas via Water Splitting and POM on Surface-Modified Oxygen Permeable Membranes.” AIChE Journal 62, no. 12 (October 10, 2016): 4427–4435.
Version
Author's final manuscript
Abstract
In this article, we report a detailed study on co-production of H2 and syngas on La[subscript 0.9]Ca[subsvript 0.1]FeO[subscript 3−[delta] (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 (H[subscript 2]/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 CO[subscript 2], depending on the oxygen permeation flux. © 2016 American Institute of Chemical Engineers AIChE J, 62: 4427–4435, 2016
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1002/aic.15518
