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Catalytic hydrogenation of dimethyl itaconate in a water-cyclohexane-triton X-100 microemulsion in comparison to a biphasic system / Juan S. Milano-Brusco in Industrial & engineering chemistry research, Vol. 47 N°20 (Octobre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N°20 (Octobre 2008) . - P. 7586-7592 Titre : Catalytic hydrogenation of dimethyl itaconate in a water-cyclohexane-triton X-100 microemulsion in comparison to a biphasic system Type de document : texte imprimé Auteurs : Juan S. Milano-Brusco, Editeur scientifique ; Michael Schwarze, Editeur scientifique ; M'hamed Djennad, Editeur scientifique Année de publication : 2008 Article en page(s) : P. 7586-7592 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Catalytic  hydrogenation  Dimethyl  itaconate  (DMI) Résumé : The kinetics of the catalytic hydrogenation of dimethyl itaconate (DMI) was studied in a biphasic cyclohexane−water system and in a [Triton X-100/1-pentanol]/cyclohexane/water microemulsion, in both cases using the water-soluble catalyst complex Rh−TPPTS. The reaction was carried out at a pressure of 1.1 bar and in the temperature range 298−308 K. A typical profile of a zero-order reaction was observed in the case of the biphasic system. Against that the reaction order for DMI changed to 1 in a microemulsion. A rate law based on an Osborn−Wilkinson-like kinetics was used to describe the experimental results which were governed by the irreversible attack of free DMI at the rhodium complex. The activation energy of the rate-determining step is 53 kJ mol−1 and is similar in both systems. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800190g [article] Catalytic hydrogenation of dimethyl itaconate in a water-cyclohexane-triton X-100 microemulsion in comparison to a biphasic system [texte imprimé] / Juan S. Milano-Brusco, Editeur scientifique ; Michael Schwarze, Editeur scientifique ; M'hamed Djennad, Editeur scientifique . - 2008 . - P. 7586-7592. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N°20 (Octobre 2008) . - P. 7586-7592 Mots-clés : Catalytic  hydrogenation  Dimethyl  itaconate  (DMI) Résumé : The kinetics of the catalytic hydrogenation of dimethyl itaconate (DMI) was studied in a biphasic cyclohexane−water system and in a [Triton X-100/1-pentanol]/cyclohexane/water microemulsion, in both cases using the water-soluble catalyst complex Rh−TPPTS. The reaction was carried out at a pressure of 1.1 bar and in the temperature range 298−308 K. A typical profile of a zero-order reaction was observed in the case of the biphasic system. Against that the reaction order for DMI changed to 1 in a microemulsion. A rate law based on an Osborn−Wilkinson-like kinetics was used to describe the experimental results which were governed by the irreversible attack of free DMI at the rhodium complex. The activation energy of the rate-determining step is 53 kJ mol−1 and is similar in both systems. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800190g