Kinetics of the propene epoxidation and water formation over gold-titania catalysts

Tjeerd Alexander Nijhuis*, Bert M. Weckhuysen

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    Abstract

    Gold-titania catalysts can very selectively epoxidize propene at mild conditions using molecular oxygen in the presence of hydrogen as sacrificial reductant. The low hydrogen efficiency of these catalysts is the most important problem that needs to be solved before this catalyst system can be applied commercially. The hydrogen efficiency is dominated by the water produced by the direct hydrogen oxidation.. This paper presents a kinetic study into the hydrogen oxidation and links this to the epoxidation kinetics. Both the behavior of gold on titania, the 'standard' catalysts of choice for the propene hydro-epoxidation, and the behavior of gold on silica are investigated. Gold on silica does not have any significant propene epoxidation activity and is studied to investigate the possible role of the support and as a way to de-couple the epoxidation from the water formation. For the hydro-oxidation of propene, it is commonly known that the support plays a crucial role in the reaction.

    Original languageEnglish
    Title of host publication234th ACS National Meeting, Abstracts of Scientific Papers
    Publication statusPublished - 2007
    Event234th ACS National Meeting - Boston, MA, United States
    Duration: 19 Aug 200723 Aug 2007

    Publication series

    NameACS National Meeting Book of Abstracts
    ISSN (Print)0065-7727

    Conference

    Conference234th ACS National Meeting
    Country/TerritoryUnited States
    CityBoston, MA
    Period19/08/0723/08/07

    Fingerprint

    Dive into the research topics of 'Kinetics of the propene epoxidation and water formation over gold-titania catalysts'. Together they form a unique fingerprint.

    Cite this