Table of Contents
ISRN Chemical Engineering
Volume 2013 (2013), Article ID 152893, 8 pages
Research Article

Dehydrogenation of Methylcyclohexane: Parametric Sensitivity of the Power Law Kinetics

1School of Chemical Engineering and Analytical Science, The University of Manchester, Manchester M60 1QD, UK
2Institute of Chemical Engineering and Technology, University of the Punjab, New Campus, Lahore-54590, Pakistan

Received 4 June 2013; Accepted 5 July 2013

Academic Editors: D. Cazorla-Amoros, G. D’Errico, F. Lefebvre, and E. A. O’Rear

Copyright © 2013 Muhammad R. Usman et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


For heterogeneous catalytic reactions, the empirical power law model is a valuable tool that explains variation in the kinetic behavior with changes in operating conditions, and therefore aids in the development of an appropriate and robust kinetic model. In the present work, experiments are performed on 1.0 wt% Pt/Al2O3 catalyst over a wide range of experimental conditions and parametric sensitivity of the power law model to the kinetics of the dehydrogenation of methylcyclohexane is studied. Power law parameters such as order of the reaction, activation energy, and kinetic rate constants are found dependent upon the operating conditions. With H2 in the feed, both apparent order of the reaction and apparent activation energy generally increase with an increase in pressure. The results suggest a kinetic model, which involves nonlinear dependence of rate on the partial pressure of hydrogen and adsorption kinetics of toluene or some intermediate.