Surface characterization of titania-silica composite oxides prepared by rapid hydrolysis

被引：5

作者：

Kanai, H ^{[1
]}

Shono, M

Imamura, S

Kobayashi, H

机构：

[1] Kyoto Prefectural Univ, Dept Environm Informat, Sakyo Ku, Kyoto 606, Japan

[2] Kyoto Inst Technol, Dept Chem, Kyoto 606, Japan

[3] Kurashiki Univ Sci & Arts, Coll Sci & Ind Technol, Kurashiki, Okayama 712, Japan

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 1998年 / 130卷 / 1-2期

关键词：

titania-silica; ESR; superoxide radical; sol-gel;

D O I：

10.1016/S1381-1169(97)00211-2

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 surface structures of TiO2-SiO2 composite oxides prepared by rapid hydrolysis were characterized by an ESR technique, The g(zz) value of O-2(-) adsorbed on titanium oxides gave a good indication for discriminating between tetrahedral and octahedral Ti sites. The tetrahedral Ti sites which predominates on the surface of low-loaded TiO2-SiO2 is closely related to the selectivity in the epoxidation of 1-octene with tert-butyl hydroperoxide catalyzed by TiO2-SiO2 composite oxides. (C) 1998 Elsevier Science B.V.

引用

页码：187 / 193

页数：7

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