0181758 - UFCH-W 20030197 RIV CZ eng J - Journal Article
Bejblová, M. - Zámostný, P. - Červený, L. - Čejka, Jiří
Hydrogenation and Hydrogenolysis of Acetophenone.
Collection of Czechoslovak Chemical Communications. Roč. 68, č. 10 (2003), s. 1969-1984. ISSN 0010-0765
R&D Projects: GA ČR GA203/03/0804
Institutional research plan: CEZ:AV0Z4040901
Keywords : hydrogenation * acetophenone * zeolites
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 1.041, year: 2003

Catalytic hydrogenation and hydrogenolysis of acetophenone was investigated on supported palladium catalysts in liquid phase at temperatures 30 ů 130 .DEG.C and pressures 1 ů 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.
Permanent Link: http://hdl.handle.net/11104/0078280