Nonhydrolytic surface synthesis of a heterobimetallic V-Ti alkoxide complex on silica

被引：14

作者：

Rice, GL ^{[1
]}

Scott, SL ^{[1
]}

机构：

[1] Univ Ottawa, Dept Chem, Ottawa, ON K1N 6N5, Canada

来源：

CHEMISTRY OF MATERIALS | 1998年 / 10卷 / 02期

关键词：

D O I：

10.1021/cm9706199

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：

A nonhydrolytic low-temperature route to ternary V-Ti-Si catalysts has been developed. The vanadium overlayer is deposited first, by the complete reaction of VOX3 (X is Cl or (OPr)-Pr-i) with the surface hydroxyl groups of pyrogenic silica. Ti((OPr)-Pr-i)(4) migrates underneath the vanadium overlayer to give a heterobinuclear complex containing one Ti and one V, bound to the silica surface by an Si-O-Ti link. The heterobinuclear complex is not formed when TiCl4 is used, nor can it be generated by first depositing Ti(OR)(4).

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页码：620 / 625

页数：6

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