caa a22 4500 463253612 CHVBK 20180405153347.0 cr unu---uuuuu 170326e20071001xx s 000 0 eng 10.1007/s10562-007-9165-y doi (NATIONALLICENCE)springer-10.1007/s10562-007-9165-y Chemoselective C=O Hydrogenation of α,β-unsaturated Carbonyl Compounds over Quasihomogeneous and Heterogeneous Nano-Au0 Catalysts Promoted by Lewis Acidity [Elektronische Daten] [Pascal Mertens, Joos Wahlen, Xingpu Ye, Hilde Poelman, Dirk De Vos] Lewis-acid promoted Au0 clusters were used as quasihomogeneous or as heterogeneous metal catalysts for the chemoselective hydrogenation of α,β-unsaturated carbonyl compounds. Addition of Lewis-acid cations like Zn2+ to amidic dispersions of size-optimized Au0 nanocolloids led to an enhanced hydrogenation rate and allylic alcohol chemoselectivity in the hydrogenation of e.g., crotonaldehyde (83% selectivity at 92% conversion). Heterogeneous Au0 catalysts were generated by the quantitative immobilization of the Au0 nanocolloids on a nano-sized ZnO support, followed by partial removal of the polyvinylpyrrolidone stabilizer. This deposition preserved the nanodispersed state of Au0, and resulted in a heterogeneous metal catalyst with stable activity and high C=O chemoselectivity in e.g., the hydrogenation of mesityl oxide (66% selectivity at 91% conversion). Springer Science+Business Media, LLC, 2007 Hydrogenation nationallicence Unsaturated aldehyde nationallicence Unsaturated ketone nationallicence Allylic alcohol nationallicence Gold catalyst nationallicence Heterogeneous catalyst nationallicence Lewis-acid promotion nationallicence Mertens Pascal Centre for Surface Chemistry and Catalysis, K.U. Leuven, Kasteelpark Arenberg 23, 3001, Heverlee, Belgium aut Wahlen Joos Centre for Surface Chemistry and Catalysis, K.U. Leuven, Kasteelpark Arenberg 23, 3001, Heverlee, Belgium aut Ye Xingpu Department of Metallurgy and Materials Engineering, K.U. Leuven, Kasteelpark Arenberg 44, 3001, Heverlee, Belgium aut Poelman Hilde Department of Solid State Sciences, Ghent University, Krijgslaan 281, S1, 9000, Gent, Belgium aut De Vos Dirk Centre for Surface Chemistry and Catalysis, K.U. Leuven, Kasteelpark Arenberg 23, 3001, Heverlee, Belgium aut Catalysis Letters Springer US; http://www.springer-ny.com 118/1-2(2007-10-01), 15-21 1011-372X 118:1-2<15 2007 118 10562 https://doi.org/10.1007/s10562-007-9165-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10562-007-9165-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mertens Pascal Centre for Surface Chemistry and Catalysis, K.U. Leuven, Kasteelpark Arenberg 23, 3001, Heverlee, Belgium aut NATIONALLICENCE 700 1- Wahlen Joos Centre for Surface Chemistry and Catalysis, K.U. Leuven, Kasteelpark Arenberg 23, 3001, Heverlee, Belgium aut NATIONALLICENCE 700 1- Ye Xingpu Department of Metallurgy and Materials Engineering, K.U. Leuven, Kasteelpark Arenberg 44, 3001, Heverlee, Belgium aut NATIONALLICENCE 700 1- Poelman Hilde Department of Solid State Sciences, Ghent University, Krijgslaan 281, S1, 9000, Gent, Belgium aut NATIONALLICENCE 700 1- De Vos Dirk Centre for Surface Chemistry and Catalysis, K.U. Leuven, Kasteelpark Arenberg 23, 3001, Heverlee, Belgium aut NATIONALLICENCE 773 0- Catalysis Letters Springer US; http://www.springer-ny.com 118/1-2(2007-10-01), 15-21 1011-372X 118:1-2<15 2007 118 10562 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer