Kinetics and modeling of o-xylene hydrogenation over Pt/γ-Al2O3 catalyst

A. Kalantar Neyestanaki, H. Backman, P. Mäki-Arvela, J. Wärna, T. Salmi, D. Yu Murzin*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)

Abstract

Gas-phase hydrogenation of o-xylene to cis- and trans-dimethylcyclohexane (DMCH) was studied in a differential microreactor at atmospheric pressure and 430-520K over a Ptγ-Al2O3 catalyst. Rapid reversible deactivation of the freshly reduced catalyst prompted reactivation before every kinetic measurement and extrapolation of the steady-state activity to initial activity. Reaction orders were close to zero for o-xylene and ranged from 1.5 (430 K) to 3.0 (520 K) for hydrogen. A rate maximum for the production of the saturated compounds was observed at about 460 K. The results were in line with previously reported results on xylene hydrogenation on Ni/γ-Al2O3 catalyst.

Original languageEnglish
Pages (from-to)271-278
Number of pages8
JournalChemical Engineering Journal
Volume91
Issue number2-3
DOIs
Publication statusPublished - 15 Mar 2003
MoE publication typeA1 Journal article-refereed

Keywords

  • Deactivation
  • Kinetic modeling
  • o-Xylene hydrogenation
  • Pt/γ-AlO

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