Bron, Michael ; Teschner, Detre ; Wild, Ute ; Knop-Gericke, Axel ; Volckmar, Claudia ; Wootsch, Attila ; Schlögl, Robert ; Claus, Peter (2008)
Oxygen-induced activation of silica supported silver in acrolein hydrogenation.
In: Applied Catalysis A: General, 341 (1-2)
doi: 10.1016/j.apcata.2008.02.033
Article, Bibliographie
Abstract
The effect of oxygen pre-treatment of Ag/SiO₂ catalysts used in the acrolein hydrogenation has been investigated from sub-atmospheric (266 mbar) to 10 bar reaction pressure. The pre-treatment has a profound influence on the overall hydrogenation activity, inasmuch the activity increased two- to three-fold. Oxygen pre-treatment also enhanced the selectivity towards the desired allyl alcohol. The beneficial effect of oxygen pre-treatment is ascribed to the formation of electronically modified Ag and/or morphology changes of the nanoparticles as no modification in particle size or dispersion was found.
| Item Type: | Article |
|---|---|
| Erschienen: | 2008 |
| Creators: | Bron, Michael ; Teschner, Detre ; Wild, Ute ; Knop-Gericke, Axel ; Volckmar, Claudia ; Wootsch, Attila ; Schlögl, Robert ; Claus, Peter |
| Type of entry: | Bibliographie |
| Title: | Oxygen-induced activation of silica supported silver in acrolein hydrogenation |
| Language: | English |
| Date: | 15 June 2008 |
| Journal or Publication Title: | Applied Catalysis A: General |
| Volume of the journal: | 341 |
| Issue Number: | 1-2 |
| DOI: | 10.1016/j.apcata.2008.02.033 |
| Abstract: | The effect of oxygen pre-treatment of Ag/SiO₂ catalysts used in the acrolein hydrogenation has been investigated from sub-atmospheric (266 mbar) to 10 bar reaction pressure. The pre-treatment has a profound influence on the overall hydrogenation activity, inasmuch the activity increased two- to three-fold. Oxygen pre-treatment also enhanced the selectivity towards the desired allyl alcohol. The beneficial effect of oxygen pre-treatment is ascribed to the formation of electronically modified Ag and/or morphology changes of the nanoparticles as no modification in particle size or dispersion was found. |
| Uncontrolled Keywords: | Acrolein; Silver; Selective hydrogenation; Electropositive adsorption sites |
| Additional Information: | Available online 23. Februar 2008 |
| Divisions: | 07 Department of Chemistry 07 Department of Chemistry > Ernst-Berl-Institut > Fachgebiet Technische Chemie > Technische Chemie II 07 Department of Chemistry > Ernst-Berl-Institut > Fachgebiet Technische Chemie |
| Date Deposited: | 20 Mar 2009 08:59 |
| Last Modified: | 05 Mar 2013 09:18 |
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