Nonhydrolytic sol-gel process: Aluminum titanate gels

被引：82

作者：

Andrianainarivelo, M ^{[1
]}

Corriu, RJP ^{[1
]}

Leclercq, D ^{[1
]}

Mutin, PH ^{[1
]}

Vioux, A ^{[1
]}

机构：

[1] UNIV MONTPELLIER 2,LAB PRECURSEURS ORGANOMET MAT,UMR 44,F-34095 MONTPELLIER 5,FRANCE

来源：

CHEMISTRY OF MATERIALS | 1997年 / 9卷 / 05期

关键词：

D O I：

10.1021/cm960405b

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 efficiency of the nonhydrolytic sol-gel process based on the condensation between metal chlorides and metal alkoxides has been studied in the preparation of aluminum titanate gels. Solutions of aluminum and titanium precursors in the ratio Al/Ti = 2 gave gels with the same metal ratio. The structural evolution of the samples is unusual; they directly crystallize at T > 600 degrees C into metastable pseudo-brookite beta-Al2TiO5 and are reluctant to decompose into stable TiO2 (rutile) and alpha-Al2O3 at 1150 degrees C. This behavior must be connected to the high homogeneity of the samples originating from the nonhydrolytic sol-gel process.

引用

页码：1098 / 1102

页数：5

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