Oxygen-induced activation of silica supported silver in acrolein hydrogenation

M. Bron, D. Teschner, U. Wild, B. Steinhauer, A. Knop-Gericke, C. Volckmar, A. Wootsch, R. Schlögl, P. Claus

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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.

Original languageEnglish
Pages (from-to)127-132
Number of pages6
JournalApplied Catalysis A: General
Volume341
Issue number1-2
DOIs
Publication statusPublished - Jun 15 2008

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Keywords

  • Acrolein
  • Electropositive adsorption sites
  • Selective hydrogenation
  • Silver

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Bron, M., Teschner, D., Wild, U., Steinhauer, B., Knop-Gericke, A., Volckmar, C., Wootsch, A., Schlögl, R., & Claus, P. (2008). Oxygen-induced activation of silica supported silver in acrolein hydrogenation. Applied Catalysis A: General, 341(1-2), 127-132. https://doi.org/10.1016/j.apcata.2008.02.033