Documents disponibles écrits par cet auteur

Kinetics of the hydration of ethylene oxide in the presence of heterogeneous catalyst / Mehmet Riza Altiokka 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. 10840–10844 Titre : Kinetics of the hydration of ethylene oxide in the presence of heterogeneous catalyst Type de document : texte imprimé Auteurs : Mehmet Riza Altiokka, Auteur ; Sema Akyalçin, Auteur Année de publication : 2010 Article en page(s) : pp. 10840–10844 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Kinetics--Hydration--Ethylene--Oxide--Presence--Heterogeneous--Catalyst Résumé : Kinetic data on the hydration of ethylene oxide was obtained from both uncatalyzed and heterogeneously catalyzed reactions using a pressurized batch reactor. Amberjet 4200/HCO3− was used as the heterogeneous catalyst, which was found to be the most effective among the four types of cross-linked styrene−divinylbenzene anion-exchange resins tested. The reactions were proved to follow a series-parallel irreversible homogeneous mechanism under both catalyzed and uncatalyzed conditions. Thus the corresponding rate expression can be given as −rEtO = k1CWCEtO + k2CMEGCEtO + k3CDEGCEtO. The rate constants were determined by applying the method of averages at different temperatures. The temperature dependency of the rate constants was found to be k1/[L/(mol·min)] = exp(13.62 − 8220/T), k2/[L/(mol·min)] = exp(15.57 − 8700/T), and k3/[L/(mol·min)] = exp(16.06 − 8900/T) for the uncatalyzed reactions and k1/[L/(mol·min)] = exp(19.60 − 9580/T), k2/[L/(mol·min)] = exp(20.19 − 10171/T), and k3/[L/(mol·min)] = exp(19.06 − 9743/T) in the presence of catalyst of 0.15 mol of HCO3−/L in equivalent, where T is the absolute temperature in kelvin. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901037w [article] Kinetics of the hydration of ethylene oxide in the presence of heterogeneous catalyst [texte imprimé] / Mehmet Riza Altiokka, Auteur ; Sema Akyalçin, Auteur . - 2010 . - pp. 10840–10844. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 10840–10844 Mots-clés : Kinetics--Hydration--Ethylene--Oxide--Presence--Heterogeneous--Catalyst Résumé : Kinetic data on the hydration of ethylene oxide was obtained from both uncatalyzed and heterogeneously catalyzed reactions using a pressurized batch reactor. Amberjet 4200/HCO3− was used as the heterogeneous catalyst, which was found to be the most effective among the four types of cross-linked styrene−divinylbenzene anion-exchange resins tested. The reactions were proved to follow a series-parallel irreversible homogeneous mechanism under both catalyzed and uncatalyzed conditions. Thus the corresponding rate expression can be given as −rEtO = k1CWCEtO + k2CMEGCEtO + k3CDEGCEtO. The rate constants were determined by applying the method of averages at different temperatures. The temperature dependency of the rate constants was found to be k1/[L/(mol·min)] = exp(13.62 − 8220/T), k2/[L/(mol·min)] = exp(15.57 − 8700/T), and k3/[L/(mol·min)] = exp(16.06 − 8900/T) for the uncatalyzed reactions and k1/[L/(mol·min)] = exp(19.60 − 9580/T), k2/[L/(mol·min)] = exp(20.19 − 10171/T), and k3/[L/(mol·min)] = exp(19.06 − 9743/T) in the presence of catalyst of 0.15 mol of HCO3−/L in equivalent, where T is the absolute temperature in kelvin. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901037w

Kinetics of the hydration of ethylene oxide in the presence of heterogeneous catalyst / Mehmet Riza Altiokka 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. 10840–10844 Titre : Kinetics of the hydration of ethylene oxide in the presence of heterogeneous catalyst Type de document : texte imprimé Auteurs : Mehmet Riza Altiokka, Auteur ; Sema Akyalçin, Auteur Année de publication : 2010 Article en page(s) : pp. 10840–10844 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Ethylene  oxideKinetic  data  Pressurized  batch  reactor Résumé : Kinetic data on the hydration of ethylene oxide was obtained from both uncatalyzed and heterogeneously catalyzed reactions using a pressurized batch reactor. Amberjet 4200/HCO3− was used as the heterogeneous catalyst, which was found to be the most effective among the four types of cross-linked styrene−divinylbenzene anion-exchange resins tested. The reactions were proved to follow a series-parallel irreversible homogeneous mechanism under both catalyzed and uncatalyzed conditions. Thus the corresponding rate expression can be given as −rEtO = k1CWCEtO + k2CMEGCEtO + k3CDEGCEtO. The rate constants were determined by applying the method of averages at different temperatures. The temperature dependency of the rate constants was found to be k1/[L/(mol·min)] = exp(13.62 − 8220/T), k2/[L/(mol·min)] = exp(15.57 − 8700/T), and k3/[L/(mol·min)] = exp(16.06 − 8900/T) for the uncatalyzed reactions and k1/[L/(mol·min)] = exp(19.60 − 9580/T), k2/[L/(mol·min)] = exp(20.19 − 10171/T), and k3/[L/(mol·min)] = exp(19.06 − 9743/T) in the presence of catalyst of 0.15 mol of HCO3−/L in equivalent, where T is the absolute temperature in kelvin. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901037w [article] Kinetics of the hydration of ethylene oxide in the presence of heterogeneous catalyst [texte imprimé] / Mehmet Riza Altiokka, Auteur ; Sema Akyalçin, Auteur . - 2010 . - pp. 10840–10844. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 10840–10844 Mots-clés : Ethylene  oxideKinetic  data  Pressurized  batch  reactor Résumé : Kinetic data on the hydration of ethylene oxide was obtained from both uncatalyzed and heterogeneously catalyzed reactions using a pressurized batch reactor. Amberjet 4200/HCO3− was used as the heterogeneous catalyst, which was found to be the most effective among the four types of cross-linked styrene−divinylbenzene anion-exchange resins tested. The reactions were proved to follow a series-parallel irreversible homogeneous mechanism under both catalyzed and uncatalyzed conditions. Thus the corresponding rate expression can be given as −rEtO = k1CWCEtO + k2CMEGCEtO + k3CDEGCEtO. The rate constants were determined by applying the method of averages at different temperatures. The temperature dependency of the rate constants was found to be k1/[L/(mol·min)] = exp(13.62 − 8220/T), k2/[L/(mol·min)] = exp(15.57 − 8700/T), and k3/[L/(mol·min)] = exp(16.06 − 8900/T) for the uncatalyzed reactions and k1/[L/(mol·min)] = exp(19.60 − 9580/T), k2/[L/(mol·min)] = exp(20.19 − 10171/T), and k3/[L/(mol·min)] = exp(19.06 − 9743/T) in the presence of catalyst of 0.15 mol of HCO3−/L in equivalent, where T is the absolute temperature in kelvin. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901037w