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).
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Garcia CM,Teixeira S,Marciniuk LL,Schuchardt Udoi
10.1016/j.biortech.2007.09.092subject
Has Abstractpub_date
2008-09-01 00:00:00pages
6608-13issue
14eissn
0960-8524issn
1873-2976pii
S0960-8524(07)01056-5journal_volume
99pub_type
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