The promotional effect of Sn-beta zeolites on platinum for the selective hydrogenation of α,β-unsaturated aldehydes

被引:37
作者
Concepcion, Patricia [1 ]
Perez, Yolanda [2 ]
Hernandez-Garrido, J. C. [3 ]
Fajardo, Mariano [2 ]
Calvino, J. J. [3 ]
Corma, Avelino [1 ]
机构
[1] Univ Politecn Valencia, Inst Tecnol Quim CSIC UPV, Valencia 46022, Spain
[2] Univ Rey Juan Carlos, ESCET, Dept Quim Inorgan & Analt, Madrid 28933, Spain
[3] Univ Cadiz, Fac Ciencias, Dept Ciencia Mat Ingn Met & Quim Inorgan, Cadiz 11510, Spain
关键词
LIQUID-PHASE HYDROGENATION; CITRAL HYDROGENATION; UNSATURATED ALDEHYDES; ACTIVATED CARBON; CHEMOSELECTIVE HYDROGENATION; CATALYTIC-PROPERTIES; SUPPORTED CATALYSTS; CINNAMYL ALCOHOL; COPPER ADDITION; PTSN ALLOY;
D O I
10.1039/c3cp50519g
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Pt impregnated on a Sn-beta catalyst results in a very promising catalyst for the selective hydrogenation of alpha,beta-unsaturated aldehydes, compared to the PtSn co-impregnated beta catalysts. Framework tin ions in the Sn-beta sample stabilize the nucleation of platinum nanoparticles inside the zeolite channel. These Pt-0-Sn4+ sites, which are only observed in the Pt/Sn-beta catalyst, have been shown to strongly activate the carbonyl group enhancing the hydrogenation rate of the C=O bond.
引用
收藏
页码:12048 / 12055
页数:8
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