Hydrogenation of CO2, acetone, and CO on a Rh foil promoted by titania overlayers

K. J. Williams*, A. B. Boffa, J. Lahtinen, M. Salmeron, A. T. Bell, G. A. Somorjai

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

50 Citations (Scopus)

Abstract

The effects of submonolayer deposits of titania on the hydrogenation of CO2, acetone, and CO on a Rh foil have been investigated. Titania has been found to promote all three of the hydrogenation reactions, with each reaction exhibiting a maximum rate at a titania coverage of 0.5 ML. The maximum rate for CO2 hydrogenation is 15 times that of the bare Rh surface. Acetone hydrogenation shows a 6-fold rate enhancement, while CO displays a 3-fold increase. Changes in the selectivities for each reaction are also observed upon titania promotion. The effects of titania on these reactions are attributed to an interaction between C-O bonds and Ti3+ ions located at the perimeter of titania islands.

Original languageEnglish
Pages (from-to)385-394
Number of pages10
JournalCatalysis Letters
Volume5
Issue number4-6
DOIs
Publication statusPublished - Jul 1990
MoE publication typeA1 Journal article-refereed

Keywords

  • acetone hydrogenation
  • CO hydrogenation
  • Titania promoted rhodium

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