Mennemann, Christina ; Claus, Peter (2010)
Influence of cobalt in gold catalysed gas phase propene epoxidation: Enhancement of Au uptake and catalyst activity.
In: Catalysis Letters, 134 (1-2)
doi: 10.1007/s10562-009-0222-6
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Modification of Au/TS-1 catalysts with cobalt resulted in a strong increase in the formation rate of propene oxide in the direct gas-phase propene epoxidation using a H₂/O₂ mixture as oxidant. A detailed investigation of these Au–Co/TS-1 catalysts by means of ICP, XPS, TEM and microcalorimetry revealed that this effect is mainly due to the higher gold uptake during deposition–precipitation. In contrast to TiO₂ supported gold catalysts with a similar metal content, Au–Co/TS-1 showed an extraordinary stability in terms of deactivation at a low reaction temperature of 125 °C not reported before. Graphical Abstract Modification of Au/TS-1 catalysts with cobalt resulted in a strong increase in the formation rate of propene oxide in the direct gas-phase propene epoxidation using a H₂/O₂ mixture as oxidant. A detailed characterization (ICP, XPS, TEM, microcalorimetry) revealed that this effect is mainly due to the higher gold uptake during deposition–precipitation. Au–Co/TS-1 showed an extraordinary stability in terms of deactivation at low reaction temperature.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2010 |
| Autor(en): | Mennemann, Christina ; Claus, Peter |
| Art des Eintrags: | Bibliographie |
| Titel: | Influence of cobalt in gold catalysed gas phase propene epoxidation: Enhancement of Au uptake and catalyst activity |
| Sprache: | Englisch |
| Publikationsjahr: | 9 Februar 2010 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Catalysis Letters |
| Jahrgang/Volume einer Zeitschrift: | 134 |
| (Heft-)Nummer: | 1-2 |
| DOI: | 10.1007/s10562-009-0222-6 |
| Kurzbeschreibung (Abstract): | Modification of Au/TS-1 catalysts with cobalt resulted in a strong increase in the formation rate of propene oxide in the direct gas-phase propene epoxidation using a H₂/O₂ mixture as oxidant. A detailed investigation of these Au–Co/TS-1 catalysts by means of ICP, XPS, TEM and microcalorimetry revealed that this effect is mainly due to the higher gold uptake during deposition–precipitation. In contrast to TiO₂ supported gold catalysts with a similar metal content, Au–Co/TS-1 showed an extraordinary stability in terms of deactivation at a low reaction temperature of 125 °C not reported before. Graphical Abstract Modification of Au/TS-1 catalysts with cobalt resulted in a strong increase in the formation rate of propene oxide in the direct gas-phase propene epoxidation using a H₂/O₂ mixture as oxidant. A detailed characterization (ICP, XPS, TEM, microcalorimetry) revealed that this effect is mainly due to the higher gold uptake during deposition–precipitation. Au–Co/TS-1 showed an extraordinary stability in terms of deactivation at low reaction temperature. |
| Freie Schlagworte: | Propene epoxidation - Gold - TS-1 - Au–Co catalyst |
| Zusätzliche Informationen: | Published online: 24. November 2009 |
| Fachbereich(e)/-gebiet(e): | 07 Fachbereich Chemie 07 Fachbereich Chemie > Ernst-Berl-Institut > Fachgebiet Technische Chemie > Technische Chemie II 07 Fachbereich Chemie > Ernst-Berl-Institut > Fachgebiet Technische Chemie |
| Hinterlegungsdatum: | 10 Nov 2009 08:43 |
| Letzte Änderung: | 05 Mär 2013 09:26 |
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