Thermally stable aluminas for high temperature applications

被引：21

作者：

Giannos, M ^{[1
]}

Hoang, M ^{[1
]}

Turney, TW ^{[1
]}

机构：

[1] CSIRO, Clayton S MDC, Vic 3169, Australia

来源：

CHEMISTRY LETTERS | 1998年 / 08期

关键词：

D O I：

10.1246/cl.1998.793

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Thermal decomposition of the ammonium analogue of the mineral dawsonite, NH4Al(OH)(2)CO3. H2O, yields high surface area gamma-alumina. The surface area can remain as high as 145 m(2)/g after calcination at 1000 degrees C. NH4Al(OH)(2)CO3. H2O can also be used as precursor for alumina-based binary or mixed oxides. Treatment of NH4Al(OH)(2)CO3. H2O with appropriate amounts of Ba(OH)(2) and La(NO3)(3) led to the formation of layered aluminate structure on subsequent heating. Highly thermally stable materials with surface areas of up to 25 m(2)/g after sintering at 1400 degrees C were obtained.

引用

页码：793 / 794

页数：2

共 6 条

[1] STABILIZATION OF ALUMINAS BY RARE-EARTH AND ALKALINE-EARTH IONS [J].