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New heterogeneous catalytic transesterification of vegetable and used frying oil / Maria del Remedio Hernandez in Industrial & engineering chemistry research, Vol. 49 N° 19 (Octobre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 9068-9076 Titre : New heterogeneous catalytic transesterification of vegetable and used frying oil Type de document : texte imprimé Auteurs : Maria del Remedio Hernandez, Auteur ; Juan A. Reyes-Labarta, Auteur ; Francisco J. Valdés, Auteur Année de publication : 2010 Article en page(s) : pp. 9068-9076 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Edible  species  Transesterification  Catalytic  reaction Résumé : In the present work, a new heterogeneous catalyst for oil transesterification with methanol has been developed. The catalyst is based on the introduction of sodium in calcined hydrotalcite. Two different raw materials have been used to determine the usefulness of this new catalyst: sunflower oil and used frying oil from a university restaurant. In this way, the efficiency of the new heterogeneous catalyst by using an urban residue was tested. Different parameters that can modify the extension of the transesterification reaction have been evaluated. Results obtained at 60 °C show that hydrotalcite modified with sodium presents adequate characteristics for this kind of reactions with both raw materials evaluated. An important factor observed in the present study is that no soap was formed in any of the reactions carried out, even in the case of used oil with high acid index. The iodine index of biodiesel generated with waste cooking oil presents values within the limits established by general biodiesel specifications. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23289638 [article] New heterogeneous catalytic transesterification of vegetable and used frying oil [texte imprimé] / Maria del Remedio Hernandez, Auteur ; Juan A. Reyes-Labarta, Auteur ; Francisco J. Valdés, Auteur . - 2010 . - pp. 9068-9076. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 9068-9076 Mots-clés : Edible  species  Transesterification  Catalytic  reaction Résumé : In the present work, a new heterogeneous catalyst for oil transesterification with methanol has been developed. The catalyst is based on the introduction of sodium in calcined hydrotalcite. Two different raw materials have been used to determine the usefulness of this new catalyst: sunflower oil and used frying oil from a university restaurant. In this way, the efficiency of the new heterogeneous catalyst by using an urban residue was tested. Different parameters that can modify the extension of the transesterification reaction have been evaluated. Results obtained at 60 °C show that hydrotalcite modified with sodium presents adequate characteristics for this kind of reactions with both raw materials evaluated. An important factor observed in the present study is that no soap was formed in any of the reactions carried out, even in the case of used oil with high acid index. The iodine index of biodiesel generated with waste cooking oil presents values within the limits established by general biodiesel specifications. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23289638