ESTERIFICATION OF STEARIC-ACID CATALYZED BY ANCHORED TITANATES

被引:8
作者
BLANDY, C
PELLEGATTA, JL
CHOUKROUN, R
GILOT, B
GUIRAUD, R
机构
[1] ECOLE NATL SUPER INGENIEURS GENIE CHIM, PHYSICOCHIM PROCEDES LAB, F-31078 TOULOUSE, FRANCE
[2] UNIV PAUL SABATIER, CNRS, CHIM COORDINAT LAB, UNITE PROPRE RECH 8241, F-31077 TOULOUSE, FRANCE
[3] INST NATL POLYTECH TOULOUSE, F-31077 TOULOUSE, FRANCE
关键词
D O I
10.1139/v93-005
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The esterification of stearic acid using titanates fixed on alumina or silica as catalysts has been studied. The anchoring of titanium. obtained by action of CH3Ti(OR)3 with the acid sites of the support, has been studied using different contact times and different concentrations. The heterogeneized catalyst leads to a better efficacity than the homogeneous system. The activity of the catalyst is strongly increased by using crushed solid instead of balls. The catalyst has been recovered and recycled. The stability of the (M)-Ti(OR)3 bond (with M = Al2O3 or SiO2) has been shown by kinetic measures and exchange reactions of the alcoxy groups fixed on titanium with heavy alcohol.
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页码:34 / 37
页数:4
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