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|Type:||Artigo de periódico|
|Title:||Transesterification Of Soybean Oil Catalyzed By Sulfated Zirconia.|
|Author:||Garcia, Camila Martins|
Marciniuk, Letícia Ledo
|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).|
|Appears in Collections:||Artigos e Materiais de Revistas Científicas - Unicamp|
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