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Influence of Carbon Chain Length and Unsaturation on the Esterification Activity of Fatty Acids on Nb2O5 Catalyst / Kalaru Srilatha 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. 10816–10819 Titre : Influence of Carbon Chain Length and Unsaturation on the Esterification Activity of Fatty Acids on Nb2O5 Catalyst Type de document : texte imprimé Auteurs : Kalaru Srilatha, Auteur ; N. Lingaiah, Auteur ; Potharaju S. Sai Prasad, Auteur Année de publication : 2010 Article en page(s) : pp. 10816–10819 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Influence--Carbon--Chain--Length--Unsaturation--Esterification--Activity--Fatty--Acids--Nb2O5  Catalyst Résumé : The influence of chain length and the extent of the saturation on the esterification activity of long chain carboxylic acids were studied on Nb2O5 catalyst. A series of individual fatty acids (caprylic, capric, lauric, myristic, palmitic, and steric acids) and their mixtures present in vegetable oils, namely, coconut oil, ground nut oil, olive oil, and soybean oil, were selected for esterification with methanol at different reaction temperatures. The esterification reactivity was found to be inversely proportional to alkyl chain length of the acid. The trend was discussed in terms of steric and inductive effects. The kinetic parameters estimated revealed a mild dependency of the activity on the extent of unsaturation. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900864z [article] Influence of Carbon Chain Length and Unsaturation on the Esterification Activity of Fatty Acids on Nb2O5 Catalyst [texte imprimé] / Kalaru Srilatha, Auteur ; N. Lingaiah, Auteur ; Potharaju S. Sai Prasad, Auteur . - 2010 . - pp. 10816–10819. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 10816–10819 Mots-clés : Influence--Carbon--Chain--Length--Unsaturation--Esterification--Activity--Fatty--Acids--Nb2O5  Catalyst Résumé : The influence of chain length and the extent of the saturation on the esterification activity of long chain carboxylic acids were studied on Nb2O5 catalyst. A series of individual fatty acids (caprylic, capric, lauric, myristic, palmitic, and steric acids) and their mixtures present in vegetable oils, namely, coconut oil, ground nut oil, olive oil, and soybean oil, were selected for esterification with methanol at different reaction temperatures. The esterification reactivity was found to be inversely proportional to alkyl chain length of the acid. The trend was discussed in terms of steric and inductive effects. The kinetic parameters estimated revealed a mild dependency of the activity on the extent of unsaturation. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900864z

Influence of carbon chain length and unsaturation on the esterification activity of fatty acids on Nb2O5 catalyst / Kalaru Srilatha 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. 10816–10819 Titre : Influence of carbon chain length and unsaturation on the esterification activity of fatty acids on Nb2O5 catalyst Type de document : texte imprimé Auteurs : Kalaru Srilatha, Auteur ; N. Lingaiah, Auteur ; Potharaju S. Sai Prasad, Auteur Année de publication : 2010 Article en page(s) : pp. 10816–10819 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Chain  length  Carboxylic  acids  Nb2O5  catalyst Résumé : The influence of chain length and the extent of the saturation on the esterification activity of long chain carboxylic acids were studied on Nb2O5 catalyst. A series of individual fatty acids (caprylic, capric, lauric, myristic, palmitic, and steric acids) and their mixtures present in vegetable oils, namely, coconut oil, ground nut oil, olive oil, and soybean oil, were selected for esterification with methanol at different reaction temperatures. The esterification reactivity was found to be inversely proportional to alkyl chain length of the acid. The trend was discussed in terms of steric and inductive effects. The kinetic parameters estimated revealed a mild dependency of the activity on the extent of unsaturation. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900864z [article] Influence of carbon chain length and unsaturation on the esterification activity of fatty acids on Nb2O5 catalyst [texte imprimé] / Kalaru Srilatha, Auteur ; N. Lingaiah, Auteur ; Potharaju S. Sai Prasad, Auteur . - 2010 . - pp. 10816–10819. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 10816–10819 Mots-clés : Chain  length  Carboxylic  acids  Nb2O5  catalyst Résumé : The influence of chain length and the extent of the saturation on the esterification activity of long chain carboxylic acids were studied on Nb2O5 catalyst. A series of individual fatty acids (caprylic, capric, lauric, myristic, palmitic, and steric acids) and their mixtures present in vegetable oils, namely, coconut oil, ground nut oil, olive oil, and soybean oil, were selected for esterification with methanol at different reaction temperatures. The esterification reactivity was found to be inversely proportional to alkyl chain length of the acid. The trend was discussed in terms of steric and inductive effects. The kinetic parameters estimated revealed a mild dependency of the activity on the extent of unsaturation. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900864z