Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/197680
Type: Artigo de periódico
Title: Transesterification Of Soybean Oil Catalyzed By Sulfated Zirconia.
Author: Garcia, Camila Martins
Teixeira, Sergio
Marciniuk, Letícia Ledo
Schuchardt, Ulf
Abstract: 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-ZrO(2)) as catalyst, the alcoholysis conversions of soybean oil under optimized conditions (120 degrees C, 1h and 5wt% of catalyst) were 98.6% (methanolysis) and 92% (ethanolysis), respectively. The esterification of oleic acid with methanol was complete after 2h. 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-ZrO(2).
Subject: Catalysis
Esterification
Soybean Oil
Sulfates
Zirconium
Rights: fechado
Identifier DOI: 10.1016/j.biortech.2007.09.092
Address: http://www.ncbi.nlm.nih.gov/pubmed/18280150
Date Issue: 2008
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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