采用 Ti 桥联硅倍半氧烷制备的用于环辛烯环氧化的负载型 Ti 催化剂的简便制备。

Facile preparation of silica-supported Ti catalysts effective for the epoxidation of cyclooctene using Ti-bridged silsesquioxanes.

机构信息

Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.

出版信息

Chem Commun (Camb). 2012 Aug 18;48(64):7991-3. doi: 10.1039/c2cc33571a. Epub 2012 Jul 5.

DOI:10.1039/c2cc33571a

PMID:22763854

Abstract

When used as additives, silicas strongly promoted the epoxidation of cyclooctene by (t)BuOOH in the presence of Ti-silsesquioxane (Ti-POSS), where Ti species were found to be bound to the silica surface. Based on this observation, highly-active silica-supported Ti catalysts were prepared by the thermal treatment of mixtures of Ti-POSS and silica.

摘要

作为添加剂，硅石在钛倍半硅氧烷（Ti-POSS）存在下强烈促进（t）BuOOH 对环辛烯的环氧化作用，其中钛物种被发现与硅石表面结合。基于这一观察，通过 Ti-POSS 和硅石混合物的热处理制备了高活性的硅石负载钛催化剂。