PREPARATION OF CALCIUM LANTHANUM SULFIDE POWDERS VIA ALKOXIDE SULFURIZATION

被引：27

作者：

HAN, Y ^{[1
]}

AKINC, M ^{[1
]}

机构：

[1] IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1991年 / 74卷 / 11期

关键词：

D O I：

10.1111/j.1151-2916.1991.tb06848.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Calcium lanthanum sulfide powders were prepared by reacting methoxides of calcium and lanthanum with H2S. Alkoxide mixtures of various La/Ca ratios dispersed in methanol were reacted with H2S at 25-degrees to 85-degrees-C and the amorphous gels obtained after the removal of methanol were heat-treated in H2S for full sulfurization at various temperatures. Up to 500-degrees-C, cubic LaS2 was the only crystalline phase present. Calcium lanthanum sulfide phase started to form at 550-degrees-C. In the temperature range of 650-degrees to 750-degrees-C, single-phase calcium lanthanum sulfide powders were obtained for La/Ca = 2.41 and 2.68.

引用

页码：2815 / 2819

页数：5

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