Oxygen-induced activation of silica supported silver in acrolein hydrogenation

Bron, Michael; Teschner, Detre; Wild, Ute; Steinhauer, Bernd; Knop-Gericke, Axel; Volckmar, Claudia; Wootsch, Attila; Schlögl, Robert; Claus, Peter

doi:10.1016/j.apcata.2008.02.033

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Oxygen-induced activation of silica supported silver in acrolein hydrogenation

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Teschner, Detre
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Wild, Ute
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Steinhauer, Bernd
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Knop-Gericke, Axel
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Schlögl, Robert
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Bron, M., Teschner, D., Wild, U., Steinhauer, B., Knop-Gericke, A., Volckmar, C., et al. (2008). Oxygen-induced activation of silica supported silver in acrolein hydrogenation. Applied Catalysis A, 341, 127-132. doi:10.1016/j.apcata.2008.02.033.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0010-FEB5-D

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 threefold.
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.