Documents disponibles écrits par cet auteur

SiW12O40 - based Ionic liquid catalysts / Bin Zhen in Industrial & engineering chemistry research, Vol.51 N° 31 (Août 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol.51 N° 31 (Août 2012) . - pp. 10374-10380 Titre : SiW12O40 - based Ionic liquid catalysts : Catalytic esterification of oleic acid for biodiesel production Type de document : texte imprimé Auteurs : Bin Zhen, Auteur ; Hansheng Li, Auteur ; Qingze Jiao, Auteur Année de publication : 2012 Article en page(s) : pp. 10374-10380 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Production  Esterification  Catalytic  reaction  Catalyst  Ionic  liquid Résumé : Heteropoly acid (SiW12O40)-based ionic liquid (SWIL) and silica supported SiW12O40-based ionic liquid (SWIL/ SiO2) catalysts with different contents of SWIL were designed and prepared. The structures of the catalysts were experimentally characterized and theoretically analyzed, and catalytic activities and reusability of the catalysts were evaluated through an esterification reaction between oleic acid and methanol. The results showed that SWIL had excellent activity and good reusability. SWIL dissolved in the reaction mixture during the reaction process and could be precipitated and separated from products at room temperature after methanol and water were removed. The fresh SWIL/SiO2 had high catalytic activity close to that of SWIL and could be easily separated from the reaction system just through simple filtration. However, the leaching of SWIL in the esterification reaction caused the deactivation of SWIL/SiO2. SWIL contents of SWIL/SiO2 played an important role on the catalytic activity and reusability of SWIL/SiO2. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26234068 [article] SiW12O40 - based Ionic liquid catalysts : Catalytic esterification of oleic acid for biodiesel production [texte imprimé] / Bin Zhen, Auteur ; Hansheng Li, Auteur ; Qingze Jiao, Auteur . - 2012 . - pp. 10374-10380. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol.51 N° 31 (Août 2012) . - pp. 10374-10380 Mots-clés : Production  Esterification  Catalytic  reaction  Catalyst  Ionic  liquid Résumé : Heteropoly acid (SiW12O40)-based ionic liquid (SWIL) and silica supported SiW12O40-based ionic liquid (SWIL/ SiO2) catalysts with different contents of SWIL were designed and prepared. The structures of the catalysts were experimentally characterized and theoretically analyzed, and catalytic activities and reusability of the catalysts were evaluated through an esterification reaction between oleic acid and methanol. The results showed that SWIL had excellent activity and good reusability. SWIL dissolved in the reaction mixture during the reaction process and could be precipitated and separated from products at room temperature after methanol and water were removed. The fresh SWIL/SiO2 had high catalytic activity close to that of SWIL and could be easily separated from the reaction system just through simple filtration. However, the leaching of SWIL in the esterification reaction caused the deactivation of SWIL/SiO2. SWIL contents of SWIL/SiO2 played an important role on the catalytic activity and reusability of SWIL/SiO2. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26234068