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

Research output: Contribution to journalArticleScientificpeer-review


  • K. J. Williams
  • A. B. Boffa
  • Jouko Lahtinen

  • M. Salmeron
  • A. T. Bell
  • G. A. Somorjai

Research units

  • University of California at Berkeley
  • Aalto University


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
Issue number4-6
Publication statusPublished - Jul 1990
MoE publication typeA1 Journal article-refereed

    Research areas

  • acetone hydrogenation, CO hydrogenation, Titania promoted rhodium

ID: 17236619