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Oxygen-induced activation of silica supported silver in acrolein hydrogenation

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

Offizielle URL: http://dx.doi.org/10.1016/j.apcata.2008.02.033

Kurzbeschreibung (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.

Typ des Eintrags: Artikel
Erschienen: 2008
Autor(en): Bron, Michael ; Teschner, Detre ; Wild, Ute ; Knop-Gericke, Axel ; Volckmar, Claudia ; Wootsch, Attila ; Schlögl, Robert ; Claus, Peter
Titel: Oxygen-induced activation of silica supported silver in acrolein hydrogenation
Sprache: Englisch
Kurzbeschreibung (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.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Applied Catalysis A: General
Band: 341
(Heft-)Nummer: 1-2
Freie Schlagworte: Acrolein; Silver; Selective hydrogenation; Electropositive adsorption sites
Fachbereich(e)/-gebiet(e): Fachbereich Chemie
Fachbereich Chemie > Technische Chemie > Technische Chemie II
Fachbereich Chemie > Technische Chemie
Hinterlegungsdatum: 20 Mär 2009 08:59
Offizielle URL: http://dx.doi.org/10.1016/j.apcata.2008.02.033
Zusätzliche Informationen:

Available online 23. Februar 2008

ID-Nummer: 10.1016/j.apcata.2008.02.033
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