TU Darmstadt / ULB / TUbiblio

Influence of cobalt in gold catalysed gas phase propene epoxidation: Enhancement of Au uptake and catalyst activity

Mennemann, Christina and Claus, Peter (2010):
Influence of cobalt in gold catalysed gas phase propene epoxidation: Enhancement of Au uptake and catalyst activity.
In: Catalysis Letters, pp. 31-36, 134, (1-2), [Online-Edition: http://dx.doi.org/10.1007/s10562-009-0222-6],
[Article]

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.

Item Type: Article
Erschienen: 2010
Creators: Mennemann, Christina and Claus, Peter
Title: Influence of cobalt in gold catalysed gas phase propene epoxidation: Enhancement of Au uptake and catalyst activity
Language: English
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.

Journal or Publication Title: Catalysis Letters
Volume: 134
Number: 1-2
Uncontrolled Keywords: Propene epoxidation - Gold - TS-1 - Au–Co catalyst
Divisions: 07 Department of Chemistry
07 Department of Chemistry > Fachgebiet Technische Chemie > Technische Chemie II
07 Department of Chemistry > Fachgebiet Technische Chemie
Date Deposited: 10 Nov 2009 08:43
Official URL: http://dx.doi.org/10.1007/s10562-009-0222-6
Additional Information:

Published online: 24. November 2009

Identification Number: doi:10.1007/s10562-009-0222-6
Export:
Suche nach Titel in: TUfind oder in Google

Optionen (nur für Redakteure)

View Item View Item