Germanium and silicon compounds as promoters for Re2O7/SiO2-Al2O3 metathesis catalysts

被引：7

作者：

Buffon, R

Marochio, IJ

Rodella, CB

Mol, JC

机构：

[1] Univ Estadual Campinas, Inst Quim, BR-13083970 Campinas, SP, Brazil

[2] Univ Amsterdam, Inst Mol Chem, NL-1018 WV Amsterdam, Netherlands

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2002年 / 190卷 / 1-2期

关键词：

olefin metathesis; rhenium oxide catalysts; germanium; silicon; hexene; methyl oleate;

D O I：

10.1016/S1381-1169(02)00244-3

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：

The effect of replacement of R4Sn by germanium and silicon derivatives as the promoter for the catalyst system Re2O7/ SiO2-Al2O3 in the metathesis of hex-1-ene, and the system Re2O7/B2O3/SiO2-Al2O3 in the metathesis of methyl oleate, was studied. The new promoters react slowly with the rhenium oxide. An activation time of about 15 min at temperatures varying from 50 to 75 degreesC is required for obtaining a good catalytic activity. These promoters can replace the toxic tin compounds, although they give rise to lower turnover numbers in the metathesis of methyl oleate. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：171 / 176

页数：6