Kinetic Study of the Esterification of Acetic Acid with 1-Butanol Catalysed by Alumina-Supported Tungstophosphoric Acid
Makaleler > Tam Makale · 2010
Yazarlar: Emine SERT, FERHAN SAMİ ATALAY
Progress in Reaction Kinetics and Mechanism, SCI Expanded İndekslerine Giren Dergi, Uluslararası, Wos, 2010, cilt 35, ss 236-248
DOI: 10.3184/146867810x12838705744280
Özet
The kinetics of the esterification of acetic acid with 1-butanol in the presence of alumina-supported tungstophosphoric acid (TPA) was studied. The uncatalysed reaction was shown to proceed by a second-order mechanism. In the presence of the catalyst, the reaction was found to occur between an adsorbed alcohol molecule and a molecule of acid in the bulk fluid (Eley–Rideal mechanism). It was found that alumina-supported TPA is suitable for this reaction because the activation energy was reduced from 58.0 to 37.3 kJ mol−1. The catalyst was characterized by thermogravimetric analysis, X-ray diffraction, scanning electron microscope, nitrogen adsorption study and IR spectroscopy.