Author(s): O. Zahraa, S.H. Al Khowaiter, and E. Ammar
Article publication date: 1987-04-01
Vol. 5 No. 1 (yearly), pp. 21-35.
200
Keywords
kinetics, gas, static reactor
Abstract
The kinetics of cyclohexene hydrogenation over Pt-AI2O3 catalysts was investigated in a static reactor, between 303 and 373k. and hydrogen partial pressure from 40 to 220 torr, and cyclohexene partial pressure from 20 10 80 torr. Cyclohexane was the only product observed. The rate of hydrogenation (torr min -1 g Pt -1) exhibited a maximum at 160 torr of hydrogen. The reaction order with respect 10 hydrocarbon has been found slightly negative at low temperature, and about (0.5) at high temperature. The order with respect to hydrogen varied from (0.8) to (-1) as the pressure of hydrogen increased. The experimental results of this work implied that the hydrogenation on alumina-supported platinum proceeds via the associative mechanism.