caa a22 4500 445389036 CHVBK 20180317143040.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s11144-010-0270-3 doi (NATIONALLICENCE)springer-10.1007/s11144-010-0270-3 Kinetics of toluene hydrogenation—integrating a dynamic approach regarding catalyst activity [Elektronische Daten] [Aqeel Taimoor, Isabelle Pitault] 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. 20-50kgcat·s·mol−1 and different hydrogen and toluene partial pressures is also simulated. Akadémiai Kiadó, Budapest, Hungary, 2011 Toluene hydrogenation nationallicence Activity variation nationallicence Reaction kinetics nationallicence Taimoor Aqeel Laboratoire de Génie des Procédés Catalytiques LGPC—CNRS/CPE Lyon, 43 bd du 11 novembre 1918, B.P. 82077, 69616, Villeurbanne Cedex, France aut Pitault Isabelle Laboratoire de Génie des Procédés Catalytiques LGPC—CNRS/CPE Lyon, 43 bd du 11 novembre 1918, B.P. 82077, 69616, Villeurbanne Cedex, France aut Reaction Kinetics, Mechanisms and Catalysis Springer Netherlands 102/2(2011-04-01), 263-282 1878-5190 102:2<263 2011 102 11144 https://doi.org/10.1007/s11144-010-0270-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11144-010-0270-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Taimoor Aqeel Laboratoire de Génie des Procédés Catalytiques LGPC—CNRS/CPE Lyon, 43 bd du 11 novembre 1918, B.P. 82077, 69616, Villeurbanne Cedex, France aut NATIONALLICENCE 700 1- Pitault Isabelle Laboratoire de Génie des Procédés Catalytiques LGPC—CNRS/CPE Lyon, 43 bd du 11 novembre 1918, B.P. 82077, 69616, Villeurbanne Cedex, France aut NATIONALLICENCE 773 0- Reaction Kinetics, Mechanisms and Catalysis Springer Netherlands 102/2(2011-04-01), 263-282 1878-5190 102:2<263 2011 102 11144 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer