Bron, Michael ; Teschner, Detre ; Knop-Gericke, Axel ; Scheybal, Andreas ; Steinhauer, Bernd ; Haevecker, Michael ; Födisch, Ringo ; Hönicke, Dieter ; Schlögl, Robert ; Claus, Peter (2005)
In situ-XAS and catalytic study of acrolein hydrogenation over silver catalyst: Control of intramolecular selectivity by the pressure.
In: Catalysis Communications, 6
doi: 10.1016/j.catcom.2005.02.013
Article, Bibliographie
Abstract
The gas phase hydrogenation of acrolein over 7.5% Ag/SiO2 has been studied in a broad pressure range from 7.5 mbar to 20 bar. Higher pressures favour the formation of allyl alcohol (selectivities up to 42%), whereas at low pressures propionaldehyde is by far the main product. In situ-XAS has been performed at 7.5 mbar in order to gain insight into the interaction of acrolein with Ag(1 1 1). Hydrogenated propionaldehyde-like surface species could be detected which orientated parallel to the surface. The observed intermediate correlates perfectly with the online catalytic data.
| Item Type: | Article |
|---|---|
| Erschienen: | 2005 |
| Creators: | Bron, Michael ; Teschner, Detre ; Knop-Gericke, Axel ; Scheybal, Andreas ; Steinhauer, Bernd ; Haevecker, Michael ; Födisch, Ringo ; Hönicke, Dieter ; Schlögl, Robert ; Claus, Peter |
| Type of entry: | Bibliographie |
| Title: | In situ-XAS and catalytic study of acrolein hydrogenation over silver catalyst: Control of intramolecular selectivity by the pressure |
| Language: | English |
| Date: | 2005 |
| Publisher: | Elsevier B.V. |
| Journal or Publication Title: | Catalysis Communications |
| Volume of the journal: | 6 |
| DOI: | 10.1016/j.catcom.2005.02.013 |
| Abstract: | The gas phase hydrogenation of acrolein over 7.5% Ag/SiO2 has been studied in a broad pressure range from 7.5 mbar to 20 bar. Higher pressures favour the formation of allyl alcohol (selectivities up to 42%), whereas at low pressures propionaldehyde is by far the main product. In situ-XAS has been performed at 7.5 mbar in order to gain insight into the interaction of acrolein with Ag(1 1 1). Hydrogenated propionaldehyde-like surface species could be detected which orientated parallel to the surface. The observed intermediate correlates perfectly with the online catalytic data. |
| Divisions: | 07 Department of Chemistry > Ernst-Berl-Institut > Fachgebiet Technische Chemie > Technische Chemie II 07 Department of Chemistry > Ernst-Berl-Institut > Fachgebiet Technische Chemie 07 Department of Chemistry |
| Date Deposited: | 20 Mar 2009 08:57 |
| Last Modified: | 05 Mar 2013 09:18 |
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