Influence of the starting Ni-Al phases on the enantio-differentiating properties of tartaric acid-modified Raney nickel

被引：14

作者：

Masson, J ^{[1
]}

Cividino, P ^{[1
]}

Court, J ^{[1
]}

机构：

[1] UNIV GRENOBLE 1,CNRS URA 332,ETUD DYNAM & STRUCT SELECT LAB,F-38041 GRENOBLE 9,FRANCE

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 1996年 / 111卷 / 03期

关键词：

enantioselectivity; nickel-aluminium; tartaric acid modification; Raney nickel;

D O I：

10.1016/1381-1169(96)00022-2

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：

Using well-defined pure phases: Al3Ni2, Al3Ni and the Al/AI(3)Ni eutectic we prepared tartaric acid-modified Raney nickel (RNi(3-2), RNi(3-1), RNiE). Their catalytic properties were investigated, in the hydrogenation of methyl acetoacetate at constant hydrogen pressure (1.1 MPa) and temperature (333 K) in ethyl acetate. The enantiomeric excess went from 16% on RNi(3-2) to 25% on RNi(3-1) and up to 45% on RNiE which has been prepared using an aluminium in a high state of purity. In the presence of sodium bromide in the modifying solution, RNiE remains the best catalyst: with an ee of 80%.

引用

页码：289 / 295

页数：7

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