Preparation and characterization of zirconium containing mesoporous silicas. II. Grafting reaction of tetraneopentyl zirconium on MCM-41 and characterization of the grafted species and of the resulting materials

被引：27

作者：

Wang, XX

Veyre, L

Lefebvre, F

Patarin, J

Basset, JM

机构：

[1] CNRS, Lab Chim Organomet Surface, UMR 9986, CPE, F-69616 Villeurbanne, France

[2] Ecole Natl Super Chim, Lab Mat Mineraux, CNRS, URA 428, F-68093 Mulhouse, France

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2003年 / 66卷 / 2-3期

关键词：

mesoporous silica; zirconium; solid-state NMR; organometallic complex; acidity;

D O I：

10.1016/j.micromeso.2003.09.004

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Hydroxyl groups of MCM-41 dehydroxylated under vacuum at 500 degreesC react with tetraneopentyl zirconium, leading to the evolution of neopentane and the formation of organometallic species with the mean formula (dropSi-O)(2)ZrNp2 which were fully characterized by physicochemical methods such as solid-state NMR, infrared spectroscopy, quantification of evolved gases and microanalysis. Decomposition of the resulting materials under vacuum, oxygen, water and hydrogen has been studied. The acid properties of the Zr-MCM-41 solids obtained by this way compare well to those of Zr-MCM-41 materials obtained by direct synthesis. (C) 2003 Elsevier Inc. All rights reserved.

引用

页码：169 / 179

页数：11

共 19 条

[1] Surface organometallic chemistry of zirconium.: Chemical reactivity of the Si-O-ZrNP3 surface complex synthesized on dehydroxylated silica and application to the modification of mordenite [J].