Table of Contents
ISRN Chemical Engineering
Volume 2012, Article ID 818953, 7 pages
Research Article

Selectivity of the Formation of the Ring-Closed Products and Methylcyclohexenes in the Dehydrogenation of Methylcyclohexane to Toluene

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 May 2012; Accepted 28 May 2012

Academic Editors: M. Assael and S. Wang

Copyright © 2012 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.


In our previous publication (Usman et al., 2011), the by-products formation during the dehydrogenation of methylcyclohexane over 1.0 wt% Pt/γ-Al2O3 was studied under wide range of operating conditions. The formation and yield patterns of benzene, cyclohexane, and isomers of xylene were studied. In the present contribution, the formation and yield patterns of the ring-closed products (sum of ethylcyclopentane and dimethylcyclopentanes) and methylcyclohexenes are studied. The yields of both of the ring-closed products (RCPs) and methylcyclohexenes (MCHes) were observed to increase with an increase in pressure. However, the effect of hydrogen concentration was found affecting differently at the low and at the high pressures. The yield patterns of methylcyclohexenes suggested methylcyclohexenes as the reaction intermediate in the formation of toluene.