LIQUID-PHASE STEREOSELECTIVE THYMOL HYDROGENATION OVER SUPPORTED NICKEL-CATALYSTS

被引：12

作者：

ALLAKHVERDIEV, AI ^{[1
]}

KULKOVA, NV ^{[1
]}

MURZIN, DY ^{[1
]}

机构：

[1] KARPOV PHYS CHEM INST,DEPT CATALYSIS,MOSCOW 103064,RUSSIA

来源：

CATALYSIS LETTERS | 1994年 / 29卷 / 1-2期

关键词：

THYMOL; HYDROGENATION; NICKEL CATALYST; LIQUID PHASE;

D O I：

10.1007/BF00814252

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：

The stereoselective hydrogenation of thymol was studied in liquid phase over several nickel catalysts, modified by coimpregnation of inorganic compounds containing chlorine. The total activity of all catalysts studied was decreased and was on the same order of magnitude, indicating that chlorine even after reduction remains on the surface and is responsible for the poisoning effects. Such blocking of accessible sites results in similar reaction rates for the catalysts studied. Selectivity and stereoselectivity to menthols and menthones changed significantly. The modifiers could influence the rate of keto-enol transformations, which is thought to be the key selectivity and stereoselectivity governing step.

引用

页码：57 / 67

页数：11

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