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Synthesis, Characterization and Catalytic Performance of Nanoferrites Subjected to the Esterification Reaction
Abstract:
Ni0.5Zn0.5Fe2O4, Mn0.5Zn0.5Fe2O4 and Ni0.2Cu0.3Zn0.5Fe2O4 nanoferrites were synthesized, characterized and evaluated in terms of their performance as catalysts in the methyl esterification reaction of soybean oil. The nanoferrites were synthesized by combustion and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). The XRD patterns show the presence of inverse spinel B(AB)2O4 phase. The EDX results confirmed the stoichiometry of the nanoferrite systems, whose morphology consisted of large block-like agglomerates with a brittle aspect and a wide agglomerate size distribution. The results indicate that the Ni0.5Zn0.5Fe2O4 nanoferrite was the most active catalyst in the esterification reaction, with conversion rates ranging from 40 to 91%.
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421-426
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January 2014
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© 2014 Trans Tech Publications Ltd. All Rights Reserved
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