Preparation and characterization of spherical TiO2-SiO2 particles

被引：25

作者：

Garbassi, F ^{[1
]}

Balducci, L ^{[1
]}

机构：

[1] EniChem SPA, Ctr Ric Novara, Ist Guido Donegani, I-28100 Novara, Italy

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2001年 / 47卷 / 01期

关键词：

titania-silica; sol-gel; mixed oxides; spherical particles; XPS;

D O I：

10.1016/S1387-1811(01)00302-X

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Spherical titania/silica particles of 30-60 mum average diameter, a surface area in the range 400-700 m(2)/g and a pore volume of 0.9-1.4 cm(3)/g have been prepared via emulsion/gelation of mixed sols. The TiO2 content is up to 11% by weight. Several preparation procedures of sols have been experimented, selecting that able to give a transparent and rigid gel in a reasonable time. Surface analysis suggests a substantial homogeneity of the samples and a preferential location of Ti atoms on tetrahedral sites. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：51 / 59

页数：9

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