Nanosized anatase TiO2 as precursor for preparation of sulfated titania catalysts

被引：36

作者：

Ma, Z ^{[1
]}

Yue, YH ^{[1
]}

Deng, XY ^{[1
]}

Gao, Z ^{[1
]}

机构：

[1] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2002年 / 178卷 / 1-2期

关键词：

sol-gel hydrothermal process; nanosized TiO2; sulfated titania; solid acid catalyst;

D O I：

10.1016/S1381-1169(01)00280-1

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：

Nanosized anatase TiO2 has been prepared by a sol-gel hydrothermal process. The effect of water:alkoxide molar ratio, hydrothermal aging temperature and aging time on the properties of the nanocrystalline anatase TiO2 was investigated in detail. The specific surface area, sulfur content and surface acidity of sulfated titania catalysts prepared by sulfation of sol-gel hydrothermal derived nanocrystalline TiO2 were greater than those of the analogous catalyst prepared from ordinary amorphous titania hydrate. The former catalysts displayed higher catalytic activities in isopropanol dehydration, cumene cracking and n-pentane conversion reactions, The influence of the crystalline state and crystalline grain of titania precursors on the properties of sulfated titania catalysts was studied and discussed. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：97 / 104

页数：8

共 32 条

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