Documents disponibles écrits par cet auteur

Entrainer based reactive distillation for esterification of ethylene glycol with acetic acid / Suman Thotla in Industrial & engineering chemistry research, Vol. 48 N° 21 (Novembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 21 (Novembre 2009) . - pp. 9461–9470 Titre : Entrainer based reactive distillation for esterification of ethylene glycol with acetic acid Type de document : texte imprimé Auteurs : Suman Thotla, Auteur ; Seethamraju Srinivas, Auteur ; Sanjay M. Mahajani, Auteur Année de publication : 2010 Article en page(s) : pp. 9461–9470 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Entrainer  Reactive  distillation  Acetic  acid Résumé : In this paper, we study the potential of entrainer in reactive distillation involving high boiling reactants to decrease the reactive stage temperature and for separation of one of the products to enhance the conversion. Esterification of ethylene glycol with acetic acid in the presence of Amberlyst 36 with 1,2-dichloro ethane (EDC), as an entrainer, is chosen as the model reaction. The effect of different parameters on selectivity of diacetate of ethylene glycol (DAEG) in entrainer based reactive distillation (EBRD) has been studied both through experiments and simulations. The results show that, by using entrainer, it is possible to obtain close to 100% selectivity toward diester even with a stoichiometric mole ratio, which is otherwise not possible in a conventional reactor. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801886q [article] Entrainer based reactive distillation for esterification of ethylene glycol with acetic acid [texte imprimé] / Suman Thotla, Auteur ; Seethamraju Srinivas, Auteur ; Sanjay M. Mahajani, Auteur . - 2010 . - pp. 9461–9470. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 21 (Novembre 2009) . - pp. 9461–9470 Mots-clés : Entrainer  Reactive  distillation  Acetic  acid Résumé : In this paper, we study the potential of entrainer in reactive distillation involving high boiling reactants to decrease the reactive stage temperature and for separation of one of the products to enhance the conversion. Esterification of ethylene glycol with acetic acid in the presence of Amberlyst 36 with 1,2-dichloro ethane (EDC), as an entrainer, is chosen as the model reaction. The effect of different parameters on selectivity of diacetate of ethylene glycol (DAEG) in entrainer based reactive distillation (EBRD) has been studied both through experiments and simulations. The results show that, by using entrainer, it is possible to obtain close to 100% selectivity toward diester even with a stoichiometric mole ratio, which is otherwise not possible in a conventional reactor. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801886q

Simultaneous hydrogenation and isomerization of diisobutylenes over pd-doped Ion-exchange resin catalyst / Sandip Talwalkar in Industrial & engineering chemistry research, Vol. 48 N° 24 (Décembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 10857–10863 Titre : Simultaneous hydrogenation and isomerization of diisobutylenes over pd-doped Ion-exchange resin catalyst Type de document : texte imprimé Auteurs : Sandip Talwalkar, Auteur ; Suman Thotla, Auteur ; Kai Sundmacher, Auteur Année de publication : 2010 Article en page(s) : pp. 10857–10863 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Simultaneous--Hydrogenation--Isomerization--Diisobutylenes--over  Pd-Doped--Ion-Exchange--Resin  Catalyst Résumé : The present work evaluates the applicability of a bifunctional ion-exchange-resin catalyst for the effective hydrogenation of diisobutylene, which is generally available as an equilibrium mixture of its isomers, mainly 2,4,4-trimethylpent-1-ene and 2,4,4-trimethylpent-2-ene. The terminal double bond in 2,4,4-trimethylpent-1-ene gets hydrogenated substantially more quickly than the relatively stable internal double bond in 2,4,4-trimethylpent-2-ene under relatively mild reaction conditions. Therefore, there is a need for a catalyst that is active for hydrogenation as well as simultaneous isomerization of 2,4,4-trimethylpent-2-ene to 2,4,4-trimethylpent-1-ene under mild reaction conditions. The present catalyst was found to be capable of performing simultaneous hydrogenation and isomerization, thereby increasing the reaction rate. The effects of various operating parameters were studied, and a kinetic model is proposed to explain the observed reaction rates. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9012419 [article] Simultaneous hydrogenation and isomerization of diisobutylenes over pd-doped Ion-exchange resin catalyst [texte imprimé] / Sandip Talwalkar, Auteur ; Suman Thotla, Auteur ; Kai Sundmacher, Auteur . - 2010 . - pp. 10857–10863. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 10857–10863 Mots-clés : Simultaneous--Hydrogenation--Isomerization--Diisobutylenes--over  Pd-Doped--Ion-Exchange--Resin  Catalyst Résumé : The present work evaluates the applicability of a bifunctional ion-exchange-resin catalyst for the effective hydrogenation of diisobutylene, which is generally available as an equilibrium mixture of its isomers, mainly 2,4,4-trimethylpent-1-ene and 2,4,4-trimethylpent-2-ene. The terminal double bond in 2,4,4-trimethylpent-1-ene gets hydrogenated substantially more quickly than the relatively stable internal double bond in 2,4,4-trimethylpent-2-ene under relatively mild reaction conditions. Therefore, there is a need for a catalyst that is active for hydrogenation as well as simultaneous isomerization of 2,4,4-trimethylpent-2-ene to 2,4,4-trimethylpent-1-ene under mild reaction conditions. The present catalyst was found to be capable of performing simultaneous hydrogenation and isomerization, thereby increasing the reaction rate. The effects of various operating parameters were studied, and a kinetic model is proposed to explain the observed reaction rates. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9012419

Simultaneous hydrogenation and isomerization of diisobutylenes over pd-doped ion-exchange resin catalyst / Sandip Talwalkar in Industrial & engineering chemistry research, Vol. 48 N° 24 (Décembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 10857–10863 Titre : Simultaneous hydrogenation and isomerization of diisobutylenes over pd-doped ion-exchange resin catalyst Type de document : texte imprimé Auteurs : Sandip Talwalkar, Auteur ; Suman Thotla, Auteur ; Kai Sundmacher, Auteur Année de publication : 2010 Article en page(s) : pp. 10857–10863 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Bifunctional  ion-exchange-resin  catalyst  Diisobutylene  Hydrogenation  Isomerization Résumé : The present work evaluates the applicability of a bifunctional ion-exchange-resin catalyst for the effective hydrogenation of diisobutylene, which is generally available as an equilibrium mixture of its isomers, mainly 2,4,4-trimethylpent-1-ene and 2,4,4-trimethylpent-2-ene. The terminal double bond in 2,4,4-trimethylpent-1-ene gets hydrogenated substantially more quickly than the relatively stable internal double bond in 2,4,4-trimethylpent-2-ene under relatively mild reaction conditions. Therefore, there is a need for a catalyst that is active for hydrogenation as well as simultaneous isomerization of 2,4,4-trimethylpent-2-ene to 2,4,4-trimethylpent-1-ene under mild reaction conditions. The present catalyst was found to be capable of performing simultaneous hydrogenation and isomerization, thereby increasing the reaction rate. The effects of various operating parameters were studied, and a kinetic model is proposed to explain the observed reaction rates. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9012419 [article] Simultaneous hydrogenation and isomerization of diisobutylenes over pd-doped ion-exchange resin catalyst [texte imprimé] / Sandip Talwalkar, Auteur ; Suman Thotla, Auteur ; Kai Sundmacher, Auteur . - 2010 . - pp. 10857–10863. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 10857–10863 Mots-clés : Bifunctional  ion-exchange-resin  catalyst  Diisobutylene  Hydrogenation  Isomerization Résumé : The present work evaluates the applicability of a bifunctional ion-exchange-resin catalyst for the effective hydrogenation of diisobutylene, which is generally available as an equilibrium mixture of its isomers, mainly 2,4,4-trimethylpent-1-ene and 2,4,4-trimethylpent-2-ene. The terminal double bond in 2,4,4-trimethylpent-1-ene gets hydrogenated substantially more quickly than the relatively stable internal double bond in 2,4,4-trimethylpent-2-ene under relatively mild reaction conditions. Therefore, there is a need for a catalyst that is active for hydrogenation as well as simultaneous isomerization of 2,4,4-trimethylpent-2-ene to 2,4,4-trimethylpent-1-ene under mild reaction conditions. The present catalyst was found to be capable of performing simultaneous hydrogenation and isomerization, thereby increasing the reaction rate. The effects of various operating parameters were studied, and a kinetic model is proposed to explain the observed reaction rates. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9012419