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Oxygen-induced activation of silica supported silver in acrolein hydrogenation

Bron, Michael and Teschner, Detre and Wild, Ute and Knop-Gericke, Axel and Volckmar, Claudia and Wootsch, Attila and Schlögl, Robert and Claus, Peter (2008):
Oxygen-induced activation of silica supported silver in acrolein hydrogenation.
In: Applied Catalysis A: General, pp. 127-132, 341, (1-2), [Online-Edition: http://dx.doi.org/10.1016/j.apcata.2008.02.033],
[Article]

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 and Teschner, Detre and Wild, Ute and Knop-Gericke, Axel and Volckmar, Claudia and Wootsch, Attila and Schlögl, Robert and Claus, Peter
Title: Oxygen-induced activation of silica supported silver in acrolein hydrogenation
Language: English
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.

Journal or Publication Title: Applied Catalysis A: General
Volume: 341
Number: 1-2
Uncontrolled Keywords: Acrolein; Silver; Selective hydrogenation; Electropositive adsorption sites
Divisions: 07 Department of Chemistry
07 Department of Chemistry > Fachgebiet Technische Chemie > Technische Chemie II
07 Department of Chemistry > Fachgebiet Technische Chemie
Date Deposited: 20 Mar 2009 08:59
Official URL: http://dx.doi.org/10.1016/j.apcata.2008.02.033
Additional Information:

Available online 23. Februar 2008

Identification Number: doi:10.1016/j.apcata.2008.02.033
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