Epoxidation on titanium-containing silicates: do structural features really affect the catalytic performance?

被引：105

作者：

Guidotti, M

Ravasio, N

Psaro, R

Ferraris, G

Moretti, G

机构：

[1] CNR, ISTM, I-20133 Milan, Italy

[2] Dipartimento Chim Inorgan & Met Organ & Anal, I-20133 Milan, Italy

[3] CNR, IMIP, I-00185 Rome, Italy

[4] Dipartimento Chim, I-00185 Rome, Italy

来源：

JOURNAL OF CATALYSIS | 2003年 / 214卷 / 02期

关键词：

epoxidation; heterogeneous catalysis; terpenes; titanium; mesoporous materials; MCM-41;

D O I：

10.1016/S0021-9517(02)00152-5

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：

Five titanium-containing silicates, with different structural features, were compared: Ti-MCM-41, ordered titanium-grafted mesoporous silica, Ti-SiO2 Davison, nonordered titanium-grafted porous silica, Ti-SiO2 Aerosil, nonporous pyrogenic titanium-grafted silica, MST, nonordered in-framework mesoporous material, and TiO2-SiO2 Grace, commercial amorphous porous mixed oxide. They were tested in the liquid-phase epoxidation reaction on six unsaturated cyclic terpenes. Good performances were obtained on the commercial mixed oxide and also on the three grafted silicates. The in-framework MST showed the worst activity results. Under these conditions, the porosity features do not affect the catalytic performances noticeably and the use of an ordered mesoporous material is not strictly required. Likewise, a very high surface area is not mandatory in order to have an efficient titanium-grafted catalyst in the epoxidation of these substrates. (C) 2003 Elsevier Science (USA). All rights reserved.

引用

页码：242 / 250

页数：9

共 46 条

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