Documents disponibles écrits par cet auteur

Optimization of biodiesel synthesis from waste frying soybean oil using fish scale - supported Ni catalyst / Rajat Chakraborty in Industrial & engineering chemistry research, Vol. 51 N° 25 (Juin 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 25 (Juin 2012) . - pp. 8404-8414 Titre : Optimization of biodiesel synthesis from waste frying soybean oil using fish scale - supported Ni catalyst Type de document : texte imprimé Auteurs : Rajat Chakraborty, Auteur ; Sujit K. Das, Auteur Année de publication : 2012 Article en page(s) : pp. 8404-8414 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Catalyst  Optimization Résumé : A novel Ni―Ca―hydroxyapatite solid acid catalyst was prepared through wet impregnation of Ni(NO3)2-6H2O on pretreated waste fish scale (PWFS) support, and the catalyst was characterized by TGA, XRD, FESEM, BET, BJH, and FTIR methods. The efficacy of the developed catalyst possessing a specific surface area of 90 m2/g, 0.1823 cm3/g pore volume, 54.83 nm modal pore diameter, and 7.52 mmol NaOH/g catalyst acidity was evaluated through esterification of free fatty acids (FFAs) of pretreated waste frying soybean oil (PWFSO) in a semibatch reactor. Optimal parametric values for esterification computed using response surface methodology (RSM) corresponding to maximum (i.e., 59.90%) conversion of FFAs to yield FAME (biodiesel) were 0.80 mL/min methanol flow rate, 30 wt % Ni(NO3)2-6H2O precursor dosage, and 300 °C calcination temperature. Subsequent batch transesterification of the unreacted triglycerides present in upstream product catalyzed by calcined fish scale (base catalyst) resulted in an ultimate 98.40% yield of biodiesel. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26066768 [article] Optimization of biodiesel synthesis from waste frying soybean oil using fish scale - supported Ni catalyst [texte imprimé] / Rajat Chakraborty, Auteur ; Sujit K. Das, Auteur . - 2012 . - pp. 8404-8414. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 25 (Juin 2012) . - pp. 8404-8414 Mots-clés : Catalyst  Optimization Résumé : A novel Ni―Ca―hydroxyapatite solid acid catalyst was prepared through wet impregnation of Ni(NO3)2-6H2O on pretreated waste fish scale (PWFS) support, and the catalyst was characterized by TGA, XRD, FESEM, BET, BJH, and FTIR methods. The efficacy of the developed catalyst possessing a specific surface area of 90 m2/g, 0.1823 cm3/g pore volume, 54.83 nm modal pore diameter, and 7.52 mmol NaOH/g catalyst acidity was evaluated through esterification of free fatty acids (FFAs) of pretreated waste frying soybean oil (PWFSO) in a semibatch reactor. Optimal parametric values for esterification computed using response surface methodology (RSM) corresponding to maximum (i.e., 59.90%) conversion of FFAs to yield FAME (biodiesel) were 0.80 mL/min methanol flow rate, 30 wt % Ni(NO3)2-6H2O precursor dosage, and 300 °C calcination temperature. Subsequent batch transesterification of the unreacted triglycerides present in upstream product catalyzed by calcined fish scale (base catalyst) resulted in an ultimate 98.40% yield of biodiesel. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26066768