Hydrogenation and hydrogenolysis of acetophenone

被引：24

作者：

Bejblová, M

Zámostny, P

Cerveny, L

Cejka, J

机构：

[1] Inst Chem Technol, Dept Organ Technol, CR-16628 Prague, Czech Republic

[2] Acad Sci Czech Republ, J Heyrovsky Inst Phys Chem, CR-18223 Prague 8, Czech Republic

来源：

COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS | 2003年 / 68卷 / 10期

关键词：

hydrogenation; hydrogenolysis; carbonyl compounds; acetophenone; ketones; reductions; zeolites; palladium; active carbon; heterogeneous catalysis; solid support;

D O I：

10.1135/cccc20031969

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Catalytic hydrogenation and hydrogenolysis of acetophenone was investigated on supported palladium catalysts in liquid phase at temperatures 30-130degreesC and pressures 1-10 MPa. A number of supports like active carbon, alumina and zeolites Beta and ZSM-5 were employed. The effects of solvent and support on the reaction mechanism of acetophenone transformation were studied. Catalysts with acid zeolite support showed a very high activity in transformation of acetophenone to ethylbenzene. Based on a kinetic model, the reaction rates of acetophenone transformation to ethylbenzene on Pd/C and Pd/Al2O3 catalysts were discussed. The kinetic model confirmed that the transformation of acetophenone to ethylbenzene proceeds primarily via a hydrogenation-dehydration mechanism and the effect of the direct hydrogenolysis of the C=O bond of acetophenone is insignificant.

引用

页码：1969 / 1984

页数：16

共 45 条

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