Mohr, Christian ; Hofmeister, Herbert ; Claus, Peter (2003)
The influence of real structure of gold catalysts in the partial hydrogenation of acrolein.
In: Journal of Catalysis, 213 (1)
doi: 10.1016/S0021-9517(02)00043-X
Artikel, Bibliographie
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 |
| Art des Eintrags: | Bibliographie |
| Titel: | The influence of real structure of gold catalysts in the partial hydrogenation of acrolein |
| Sprache: | Englisch |
| Publikationsjahr: | Januar 2003 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Catalysis |
| Jahrgang/Volume einer Zeitschrift: | 213 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1016/S0021-9517(02)00043-X |
| URL / URN: | 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. |
| Freie Schlagworte: | Acrolein hydrogenation; Degree of rounding; Gold catalysts; MTPs; Structure sensitivity |
| Fachbereich(e)/-gebiet(e): | 07 Fachbereich Chemie > Ernst-Berl-Institut > Fachgebiet Technische Chemie > Technische Chemie II 07 Fachbereich Chemie > Ernst-Berl-Institut > Fachgebiet Technische Chemie 07 Fachbereich Chemie |
| Hinterlegungsdatum: | 20 Mär 2009 09:02 |
| Letzte Änderung: | 05 Mär 2013 09:18 |
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