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Highly stable external short-circuit-assisted oxygen ionic transport membrane reactor for carbon dioxide reduction coupled with methane partial oxidation

Zhang, Kun, Liu, Lihong, Sunarso, Jaka, Yu, Hai, Pareek, Vishnu and Liu, Shaomin 2014, Highly stable external short-circuit-assisted oxygen ionic transport membrane reactor for carbon dioxide reduction coupled with methane partial oxidation, Energy and fuels, vol. 28, no. 1, pp. 349-355, doi: 10.1021/ef401253x.

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Title Highly stable external short-circuit-assisted oxygen ionic transport membrane reactor for carbon dioxide reduction coupled with methane partial oxidation
Author(s) Zhang, Kun
Liu, Lihong
Sunarso, Jaka
Yu, Hai
Pareek, Vishnu
Liu, Shaomin
Journal name Energy and fuels
Volume number 28
Issue number 1
Start page 349
End page 355
Total pages 7
Publisher American Chemical Society
Place of publication Washington, D. C.
Publication date 2014
ISSN 0887-0624
1520-5029
Keyword(s) technology
energy & fuels
engineering, chemical
engineering
qxide fuel-cell
thermal-decomposition
CO2 mitigation
electrochemical reduction
permeable membrane
ceramic membranes
high-performance
separation
capture
cathode
Science & Technology
Summary A membrane reactor allows for simultaneous separation and reaction, and thus, can play a good role to produce value-added chemicals. In this work, we demonstrated such a membrane reactor based on fluorite oxide samarium-doped ceria (SDC) using an external short-circuit concept for oxygen permeation. The fluorite phase was employed to impart its high structural stability, while its limited electronic conductivity was overcome by the application of an external short circuit to function the SDC membrane for oxygen transport. On one side of the membrane, i.e., feed side, carbon dioxide decomposition into carbon monoxide and oxygen was carried out with the aid of a Pt or Ag catalyst. The resultant oxygen was concurrently depleted on the membrane surface and transported to the other side of the membrane, favorably shifting this equilibrium-limited reaction to the product side. The transported oxygen on the permeate side with the aid of a GdNi/Al2O3 catalyst was then consumed by the reaction with methane to form syngas, i.e., carbon monoxide and hydrogen. As such, the required driving force for gas transport through the membrane can be sustained by coupling two different reactions in one membrane reactor, whose stability to withstand these different gases at high temperatures is attained in this paper. We also examined the effect of the membrane thickness, oxygen ionic transport rate, and CO2 and CH4 flow rates to the membrane reactor performance. More importantly, here, we proved the feasibility of a highly stable membrane reactor based on an external short circuit as evidenced by achieving the constant performance in CO selectivity, CH4 conversion, CO2 conversion, and O2 flux during 100 h of operation and unaltered membrane structure after this operation together with the coking resistance.
Notes This article is part of the 4th (2013) Sino-Australian Symposium on Advanced Coal and Biomass Utilisation Technologies special issue.
Language eng
DOI 10.1021/ef401253x
Field of Research 090404 Membrane and Separation Technologies
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2013, American Chemical Society
Persistent URL http://hdl.handle.net/10536/DRO/DU:30067627

Document type: Journal Article
Collection: Institute for Frontier Materials
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