Two sulfated zirconias were synthesized and characterized by X-ray diffraction and infrared spectroscopy. They were used as catalysts in the alcoholysis of soybean oil and in the esterification of oleic acid. Using sulfated zirconia prepared by the solvent-free method (S-ZrO2) as catalyst, the alcoholysis conversions of soybean oil under optimized conditions (120 °C, 1 h and 5 wt% of catalyst) were 98.6% (methanolysis) and 92% (ethanolysis), respectively. The esterification of oleic acid with methanol was complete after 2 h. Zirconia sulfated by standard methods (SZ) had low activity in the methanolysis of soybean oil (conversion of 8.5%) and conventional zirconia (NS) was inactive for methanolysis under the conditions optimized for S-ZrO2. © 2007 Elsevier Ltd. All rights reserved.
CITATION STYLE
Garcia, C. M., Teixeira, S., Marciniuk, L. L., & Schuchardt, U. (2008). Transesterification of soybean oil catalyzed by sulfated zirconia. Bioresource Technology, 99(14), 6608–6613. https://doi.org/10.1016/j.biortech.2007.09.092
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