Transesterification reaction of vegetable oils, using superacid sulfated TiO2-base catalysts

被引：127
作者：
de Almeida, Rusiene M. [1 ]
Noda, Lucia K. [2 ]
Goncalves, Norberto S. [2 ]
Meneghetti, Simoni M. P. [1 ]
Meneghetti, Mario R. [1 ]
机构：
[1] Univ Fed Alagoas, Inst Quim & Biotechnol, BR-57072970 Maceio, AL, Brazil
[2] Univ Fed Sao Paulo, Dept Fis & Ciencia Matemat, BR-09972270 Diadema, SP, Brazil
来源：
APPLIED CATALYSIS A-GENERAL | 2008年 / 347卷 / 01期
关键词：
superacids; biodiesel; transesterification; TiO2/SO4;
D O I：
10.1016/j.apcata.2008.06.006
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Superacid sulfated titania catalyst, TiO2/SO4 (TS-series), have been prepared via the sol-gel technique, with different sulfate concentrations. The relation of structure and catalytic activity of the prepared material have been evaluated. The obtained material was characterized by several techniques, as infrared and Raman absorption spectroscopy. pyridine-adsorption infrared spectroscopy, thermogravimetric analyses and obtention of N-2 adsorption-desorption isotherms. The catalyst that exhibits the highest catalytic activity in the methanolysis of soybean and castor oils at 120 degrees C, for 60 min (40% and 25%, respectively) was that which displayed the highest specific surface area, average pores diameter and pore volume, and highest percentage in sulfate groups (TS-5). (c) 2008 Elsevier B.V. All rights reserved.
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收藏
页码：100 / 105
页数：6
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