Effects of Catalysts and Membranes on the Performance of Membrane Reactors in Steam Reforming of Ethanol at Moderate Temperature

Miyamoto, Manabu; Yoshikawa, Yuki; Oumi, Yasunori; Yamaura, Shin-ichi; Uemiya, Shigeyuki

doi:10.3390/pr4020018

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Effects of Catalysts and Membranes on the Performance of Membrane Reactors in Steam Reforming of Ethanol at Moderate Temperature

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Department of Chemistry and Biomolecular Science, Gifu University, 1-1 Yanagido Gifu 501-1193, Japan

Department of Materials Science and Technology, Gifu University, 1-1 Yanagido Gifu 501-1193, Japan

Division of Instrument Analysis, Life Science Research Center, Gifu University, 1-1 Yanagido Gifu 501-1193, Japan

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Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba, Sendai 980-8577, Japan

Authors to whom correspondence should be addressed.

Academic Editors: Angelo Basile and Catherine Charcosset

Processes 2016, 4(2), 18; https://doi.org/10.3390/pr4020018

Received: 20 April 2016 / Revised: 17 May 2016 / Accepted: 26 May 2016 / Published: 3 June 2016

(This article belongs to the Special Issue Membrane Separation Processes)

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Abstract

Steam reforming of ethanol in the membrane reactor using the Pd₇₇Ag₂₃ membrane was evaluated in Ni/CeO₂ and Co/CeO₂ at atmospheric pressure. At 673 K, the H₂ yield in the Pd₇₇Ag₂₃ membrane reactor over Co/CeO₂ was found to be higher than that over Ni/CeO₂, although the H₂ yield over Ni/CeO₂ exceeded that over Co/CeO₂ at 773 K. This difference was owing to their reaction mechanism. At 773 K, the effect of H₂ removal could be understood as the equilibrium shift. In contrast, the H₂ removal kinetically inhibited the reverse methane steam reforming at low temperature. Thus, the low methane-forming reaction rate of Co/CeO₂ was favorable at 673 K. The addition of a trace amount of Ru increased the H₂ yield effectively in the membrane reactor, indicating that a reverse H₂ spill over mechanism of Ru would enhance the kinetical effect of H₂ separation. Finally, the effect of membrane performance on the reactor performance by using amorphous alloy membranes with different compositions was evaluated. The H₂ yield was set in the order of H₂ permeation flux regardless of the membrane composition. View Full-Text

Keywords: amorphous alloy membranes; membrane reactor; steam reforming; ethanol

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MDPI and ACS Style

Miyamoto, M.; Yoshikawa, Y.; Oumi, Y.; Yamaura, S.-i.; Uemiya, S. Effects of Catalysts and Membranes on the Performance of Membrane Reactors in Steam Reforming of Ethanol at Moderate Temperature. Processes 2016, 4, 18. https://doi.org/10.3390/pr4020018

AMA Style

Miyamoto M, Yoshikawa Y, Oumi Y, Yamaura S-i, Uemiya S. Effects of Catalysts and Membranes on the Performance of Membrane Reactors in Steam Reforming of Ethanol at Moderate Temperature. Processes. 2016; 4(2):18. https://doi.org/10.3390/pr4020018

Chicago/Turabian Style

Miyamoto, Manabu, Yuki Yoshikawa, Yasunori Oumi, Shin-ichi Yamaura, and Shigeyuki Uemiya. 2016. "Effects of Catalysts and Membranes on the Performance of Membrane Reactors in Steam Reforming of Ethanol at Moderate Temperature" Processes 4, no. 2: 18. https://doi.org/10.3390/pr4020018

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Effects of Catalysts and Membranes on the Performance of Membrane Reactors in Steam Reforming of Ethanol at Moderate Temperature

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