Catalytic epoxidation of cyclohexane on MCM-41 and Ti-MCM-41

被引：0
|
作者：
Pecchi, G [1 ]
Reyes, P [1 ]
Borda, G [1 ]
Oportus, M [1 ]
机构：
[1] Univ Concepcion, Fac Ciencias Quim, Concepcion, Chile
来源：
EMERGING FIELDS IN SOL-GEL SCIENCE AND TECHNOLOGY | 2003年
关键词：
MCM-41; mesoporous; epoxidation; catalyst;
D O I：
暂无
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Mesoporous type MCM-41 and Ti-MCM-41 have been prepared and characterised by XRD, surface area and porosity evaluation and TEM. The solids were essayed as catalysts for the epoxidation of cyclohexane at two different temperatures. Only the samples containing Ti were active in the reaction being the most active the sample that was silylated. This fact was attributed to the generation of isolated titania sites. The catalysts display a complete selectivity to the epoxide and a significant increase in the reaction rate as temperature increases, was observed. Important changes in the activation energy of the silylated Ti-MCM-41 compared to the Ti-MCM-41 was found.
引用
收藏
页码：59 / 66
页数：8
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