Associative adsorption kinetics: A novel kinetic model for the dehydrogenation of methylcyclohexane

Muhammad Sarfraz Akram*, Dureem Munir, Muhammad Rashid Usman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Methylcyclohexane (MCH) dehydrogenation is an important reforming reaction and is considered as a model naphthene dehydrogenation reaction. An increase in the rate of this reaction with the addition of hydrogen at low pressures has been observed by various researchers in the field. This enhancement in rate is described, in the present study, using the concept of associative adsorption of MCH with hydrogen in Langmuir-Hinshelwood-Hougen-Watson single-site and dual-site surface reaction mechanisms. The various rate equations developed on these bases are tested against the experimental data of Usman over Pt/Al2O3 and the best-fit rate model is presented. An activation energy of 52.0 kJ mol-1 is obtained for the best-fit rate model.

Original languageEnglish
Pages (from-to)404-417
Number of pages14
JournalProgress in Reaction Kinetics and Mechanism
Issue number4
Publication statusPublished - 2014
Externally publishedYes


  • Associative adsorption
  • Dehydrogenation
  • Langmuir-Hinshelwood-Hougen-Watson kinetics
  • Methylcyclohexane
  • Reforming

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry


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