Ga and In modified ceria as supports for cobalt-catalyzed Fischer-Tropsch synthesis

Muthu Kumaran Gnanamani, Gary Jacobs, Wilson D. Shafer, Michela Martinelli, Donald C. Cronauer, A. Jeremy Kropf, Christopher L. Marshall, Burtron H. Davis

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Ga- and In-modified ceria (Ce0.8Ga0.2O2, Ce0.8In0.2O2) materials were used as supports for cobalt-catalyzed Fischer-Tropsch synthesis (FTS). The addition of Ga to ceria was found to improve CO conversion for cobalt-catalyzed FTS, while the addition of In tended to decrease it. A similar trend was observed with the Ag-promoted cobalt/ceria catalysts. Doping of ceria with Ga or In decreased methane and increased the selectivity to olefins and alcohols for Ag-promoted cobalt/ceria. The sum of the products of olefins and alcohols for various catalysts exhibited a decreasing trend as follows: Ag-Co/Ce-Ga > Ag-Co/Ce-In > Ag-Co/Ce. Results of H2-TPR-XANES showed that adding of Ga or In to ceria increases the fraction of Ce3+ in the surface shell for both unpromoted and Ag-promoted catalysts in the range of temperature typical of catalyst activation. This partially reduced ceria plays an important role in controlling the product selectivity of cobalt-catalyzed FT synthesis.

Original languageEnglish
Pages (from-to)115-123
Number of pages9
JournalApplied Catalysis A: General
StatePublished - 2017

Bibliographical note

Funding Information:
The work carried out at the CAER was supported in part by funding from the Commonwealth of Kentucky . Argonne’s research was supported in part by the U.S. Department of Energy (DOE) , Office of Fossil Energy, National Energy Technology Laboratory (NETL) . The use of the Advanced Photon Source was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. MRCAT operations are supported by the Department of Energy and the MRCAT member institutions.

Publisher Copyright:
© 2017 Elsevier B.V.


  • Ag promoter
  • CeO
  • CeO-GaO
  • CeO-InO
  • Fischer-Tropsch synthesis
  • Oxygenates

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology


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