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Yu AS, Oh TS, Zhu R, et al. Surface modification of La(0.8)Sr(0.2)CrO(3-δ)-YSZ dual-phase membranes for syngas production. Faraday Discuss. 2015;182:213-25doi: 10.1039/c5fd00007f.
Yu, A. S., Oh, T. S., Zhu, R., Gallegos, A., Gorte, R. J., & Vohs, J. M. (2015). Surface modification of La(0.8)Sr(0.2)CrO(3-δ)-YSZ dual-phase membranes for syngas production. Faraday discussions, 182213-25. https://doi.org/10.1039/c5fd00007f
Yu, Anthony S, et al. "Surface modification of La(0.8)Sr(0.2)CrO(3-δ)-YSZ dual-phase membranes for syngas production." Faraday discussions vol. 182 (2015): 213-25. doi: https://doi.org/10.1039/c5fd00007f
Yu AS, Oh TS, Zhu R, Gallegos A, Gorte RJ, Vohs JM. Surface modification of La(0.8)Sr(0.2)CrO(3-δ)-YSZ dual-phase membranes for syngas production. Faraday Discuss. 2015;182:213-25. doi: 10.1039/c5fd00007f. PMID: 26211722.
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Faraday Discuss. 2015;182:213-25. doi: 10.1039/c5fd00007f.

Surface modification of La(0.8)Sr(0.2)CrO(3-δ)-YSZ dual-phase membranes for syngas production.

Faraday discussions

Anthony S Yu, Tae-Sik Oh, Ran Zhu, Alexa Gallegos, Raymond J Gorte, John M Vohs

Affiliations

  1. Chemical & Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA. [email protected].

PMID: 26211722 DOI: 10.1039/c5fd00007f

Abstract

Oxygen permeation fluxes were studied in Mixed Ionic and Electronic Conducting (MIEC) membranes based on composites of 40 vol% La(0.8)Sr(0.2)CrO3 (LSCr) and 60 vol% yttria-stabilized zirconia (YSZ), using ambient air and flowing CO to establish a P(O2) gradient. The ambipolar conductivity of the dense LSCr-YSZ composite was determined for membranes with dense layers that were 115 μm and 650 μm thick. Other parts of the investigation focused on how modifications to the surface on the CO side affected the fluxes. Using a porous LSCr-YSZ composite on the surface as the base case, oxygen fluxes were shown to increase dramatically upon addition of 5 wt% CeO2 as a catalyst and an additional increase was observed with 1 wt% Pt. Changes in the structure of the porous composite LSCr-YSZ surface to improve connectivity of the YSZ phase also led to large increases in the oxygen fluxes.

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