Reaction Kinetics, Mechanisms and Catalysis
Volume/Issue:
Volume 102: Issue 2
Kinetics of toluene hydrogenation—integrating a dynamic approach regarding catalyst activity
Authors:
Aqeel Ahmad Taimoor Laboratoire de Génie des Procédés Catalytiques LGPC—CNRS/CPE Lyon, 43 bd du 11 novembre 1918, B.P. 82077, 69616, Villeurbanne Cedex, France, ata@lgpc.cpe.fr

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Isabelle Pitault Laboratoire de Génie des Procédés Catalytiques LGPC—CNRS/CPE Lyon, 43 bd du 11 novembre 1918, B.P. 82077, 69616, Villeurbanne Cedex, France, ata@lgpc.cpe.fr

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Pages:
263–282
Online Publication Date:
06 Jan 2011
Publication Date:
01 Apr 2011
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s11144-010-0270-3
Keywords:
Toluene hydrogenation; Activity variation; Reaction kinetics
Restricted access

Abstract

Gas phase toluene hydrogenation is investigated over Pt/Al2O3 catalyst with temperature ranging from 75 to 125 °C and at atmospheric pressure. Strong activity variations are observed during long duration experiments. These variations are thoroughly investigated and a mechanistic model is proposed with dynamic adsorption activity of the reactants, used to explain the decrease in catalyst activity. This model considers competitive adsorption behaviour of the reactants and dissociative adsorption of hydrogen. Such a model can also be used to explain the strong metal-support interaction (SMSI) effect induced by the catalyst support. The decrease in activity after temperature maxima as previously observed can also be addressed by the approach presented. A comparison of activity variation at different residence times i.e. 20–50 kgcat·s·mol−1 and different hydrogen and toluene partial pressures is also simulated.

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Cover Reaction Kinetics, Mechanisms and Catalysis
Reaction Kinetics, Mechanisms and Catalysis
Print ISSN:
1878-5190
Online ISSN:
1878-5204

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Reaction Kinetics, Mechanisms and Catalysis
Language English
Size B5
Year of
Foundation		 1974
Volumes
per Year		 1
Issues
per Year		 6
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1878-5190 (Print)
ISSN 1878-5204 (Online)

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