Transesterification of triolein to biodiesel using sodium - loaded catalysts prepared from zeolites / Yu-Yuan Wang in Industrial & engineering chemistry research, Vol. 51 N° 30 (Août 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 30 (Août 2012) . - pp. 9959-9965 Titre : Transesterification of triolein to biodiesel using sodium - loaded catalysts prepared from zeolites Type de document : texte imprimé Auteurs : Yu-Yuan Wang, Auteur ; Tan Hiep Dang, Auteur ; Bing-Hung Chen, Auteur Année de publication : 2012 Article en page(s) : pp. 9959-9965 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Zeolite Catalyst Transesterification Résumé : Transesterification of triolein in excess methanol over sodium-loaded catalysts prepared from Na-ion exchange with zeolites at a relatively lower reaction temperature, namely, at 60 °C, is studied in this work, Two zeolites, i.e., as-synthesized Zeolite MCM-22 and commercial Zeolite HY (CBV-780), are employed in this study. Although both zeolites show to some extent the capability of catalyzing transesterification of triolein in methanol to biodiesel, the resulting yields are only ca. 90% for CBV-780 after a 40-h reaction and 16.3% for MCM-22 after a 90-h reaction. In contrast, the conversion yields are much improved with Na-ion exchange to the surface of zeolite catalysts. For example, the yields of triolein to biodiesel have reached 98% and 99% within a 5.5-h reaction, respectively, using the NaOH-treated CBV-780 and MCM-22 catalysts, even if these NaOH-treated catalysts become amorphous and have suffered a loss of the Brunauer―Emmett―Teller surface area. Furthermore, no saponification was observed using these NaOH-treated catalysts. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26201408 [article] Transesterification of triolein to biodiesel using sodium - loaded catalysts prepared from zeolites [texte imprimé] / Yu-Yuan Wang, Auteur ; Tan Hiep Dang, Auteur ; Bing-Hung Chen, Auteur . - 2012 . - pp. 9959-9965. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 30 (Août 2012) . - pp. 9959-9965 Mots-clés : Zeolite Catalyst Transesterification Résumé : Transesterification of triolein in excess methanol over sodium-loaded catalysts prepared from Na-ion exchange with zeolites at a relatively lower reaction temperature, namely, at 60 °C, is studied in this work, Two zeolites, i.e., as-synthesized Zeolite MCM-22 and commercial Zeolite HY (CBV-780), are employed in this study. Although both zeolites show to some extent the capability of catalyzing transesterification of triolein in methanol to biodiesel, the resulting yields are only ca. 90% for CBV-780 after a 40-h reaction and 16.3% for MCM-22 after a 90-h reaction. In contrast, the conversion yields are much improved with Na-ion exchange to the surface of zeolite catalysts. For example, the yields of triolein to biodiesel have reached 98% and 99% within a 5.5-h reaction, respectively, using the NaOH-treated CBV-780 and MCM-22 catalysts, even if these NaOH-treated catalysts become amorphous and have suffered a loss of the Brunauer―Emmett―Teller surface area. Furthermore, no saponification was observed using these NaOH-treated catalysts. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26201408

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