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The influence of real structure of gold catalysts in the partial hydrogenation of acrolein

Mohr, Christian ; Hofmeister, Herbert ; Claus, Peter :
The influence of real structure of gold catalysts in the partial hydrogenation of acrolein.
[Online-Edition: http://www.sciencedirect.com/science/article/B6WHJ-47BX61P-6...]
In: Journal of Catalysis, 213 (1) pp. 86-94.
[Artikel], (2003)

Offizielle URL: http://www.sciencedirect.com/science/article/B6WHJ-47BX61P-6...

Kurzbeschreibung (Abstract)

The hydrogenation of acrolein on supported gold catalysts has been used as test reaction to study several aspects of structure sensitivity, i.e., the dependence of activity and selectivity on the size of gold particles. We focused our work on the influence of the geometrical configuration of the supported gold nanoparticles, namely the occurrence of multiply twinned particles (MTPs) and the degree of rounding. A higher number of MTPs resulted in a lowering of selectivity to the desired product, allyl alcohol, as well as a lowering of the turnover frequency. The higher amount frequency of a gold catalyst supported on TiO2 compared to ZrO2 is attributed to a higher degree of rounding of the former.

Typ des Eintrags: Artikel
Erschienen: 2003
Autor(en): Mohr, Christian ; Hofmeister, Herbert ; Claus, Peter
Titel: The influence of real structure of gold catalysts in the partial hydrogenation of acrolein
Sprache: Englisch
Kurzbeschreibung (Abstract):

The hydrogenation of acrolein on supported gold catalysts has been used as test reaction to study several aspects of structure sensitivity, i.e., the dependence of activity and selectivity on the size of gold particles. We focused our work on the influence of the geometrical configuration of the supported gold nanoparticles, namely the occurrence of multiply twinned particles (MTPs) and the degree of rounding. A higher number of MTPs resulted in a lowering of selectivity to the desired product, allyl alcohol, as well as a lowering of the turnover frequency. The higher amount frequency of a gold catalyst supported on TiO2 compared to ZrO2 is attributed to a higher degree of rounding of the former.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of Catalysis
Band: 213
(Heft-)Nummer: 1
Freie Schlagworte: Acrolein hydrogenation; Degree of rounding; Gold catalysts; MTPs; Structure sensitivity
Fachbereich(e)/-gebiet(e): Fachbereich Chemie > Technische Chemie > Technische Chemie II
Fachbereich Chemie > Technische Chemie
Fachbereich Chemie
Hinterlegungsdatum: 20 Mär 2009 09:02
Offizielle URL: http://www.sciencedirect.com/science/article/B6WHJ-47BX61P-6...
ID-Nummer: 10.1016/S0021-9517(02)00043-X
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