CO2 methanation on Ru-doped ceria

Sharma, Sudhanshu, Hu, Zhenpeng, Zhang, Peng, McFarland, Eric W. and Metiu, Horia (2011) CO2 methanation on Ru-doped ceria. Journal of Catalysis, 278 2: 297-309. doi:10.1016/j.jcat.2010.12.015

Author Sharma, Sudhanshu
Hu, Zhenpeng
Zhang, Peng
McFarland, Eric W.
Metiu, Horia
Title CO2 methanation on Ru-doped ceria
Journal name Journal of Catalysis   Check publisher's open access policy
ISSN 0021-9517
Publication date 2011-03-07
Sub-type Article (original research)
DOI 10.1016/j.jcat.2010.12.015
Open Access Status Not yet assessed
Volume 278
Issue 2
Start page 297
End page 309
Total pages 13
Place of publication Maryland Heights, MO, United States
Publisher Academic Press
Language eng
Abstract We study the methanation of CO2 catalyzed by ceria doped with Ni, Co, Pd, or Ru. Ce0.96Ru0.04O2 and Ce 0.95Ru0.05O2 perform best, converting 55% of CO2 with a 99% selectivity for methane, at a temperature of 450 °C. This is comparable to the best catalysts found previously for this reaction. Ce0.95Ru0.05O2 was characterized by XRD, electron microscopy, BET, XPS, IR spectroscopy, and temperature-programmed reaction with Ar, H2, CO, and CO2 + H2. Steady-state methanation was studied at several temperatures between 100 and 500 °C. We find that the methanation reaction takes place on the reduced Ce0.95Ru0.05O2, and the role of the dopant is to make the reduction possible at lower temperature than on pure ceria. We discuss the potential for local and global effects of the dopant on catalytic chemistry.
Keyword Carbon dioxide
Doped ceria
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemical Engineering Publications
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