The use of gold on promoting PGM (platinum group metal) catalysts for the selective oxidn. of various primary alcs. under mild conditions was investigated. Au/Pd and Au/Pt catalysts showing a single alloyed phase were prepd. It was found that using these bimetallic catalysts instead of monometallic ones caused a significant change in activity in the liq.-phase oxidn. of alcs. Au/Pd catalyst showed a pos. synergistic effect; Au/Pt, a neg. one. By using aq. solvent instead of org. solvent (toluene), activity was enhanced for both Au/Pd and Au/Pt catalysts, with some changes in selectivity as well.
Pd and Pt catalysts modified by alloying with Au in the selective oxidation of alcohols / N. Dimitratos, A. Villa, D. Wang, F. Porta, D. Su, L. Prati. - In: JOURNAL OF CATALYSIS. - ISSN 0021-9517. - 244:1(2006), pp. 113-121.
Pd and Pt catalysts modified by alloying with Au in the selective oxidation of alcohols
A. Villa;F. Porta;L. Prati
2006
Abstract
The use of gold on promoting PGM (platinum group metal) catalysts for the selective oxidn. of various primary alcs. under mild conditions was investigated. Au/Pd and Au/Pt catalysts showing a single alloyed phase were prepd. It was found that using these bimetallic catalysts instead of monometallic ones caused a significant change in activity in the liq.-phase oxidn. of alcs. Au/Pd catalyst showed a pos. synergistic effect; Au/Pt, a neg. one. By using aq. solvent instead of org. solvent (toluene), activity was enhanced for both Au/Pd and Au/Pt catalysts, with some changes in selectivity as well.
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