A THERMAL-ANALYSIS EVALUATION OF THE LOW-TEMPERATURE SYNTHESIS OF BABIO3

被引：8
|
作者：
CHUAH, GK [1 ]
JAENICKE, S [1 ]
CHAN, KS [1 ]
KHOR, ST [1 ]
HILL, JO [1 ]
机构：
[1] NATL UNIV SINGAPORE,DEPT CHEM,KENT RIDGE,SINGAPORE 0511,SINGAPORE
来源：
JOURNAL OF THERMAL ANALYSIS | 1993年 / 40卷 / 03期
关键词：
BABIO3; EGA; IR; LOW TEMPERATURE SYNTHESIS; MENTAL-ORGANIC PRECURSORS; TG; XRD;
D O I：
10.1007/BF02546878
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Thermal decomposition of metal-organic precursors for the mixed oxide BaBiO3 was studied using TG and EGA. Precursors produced by polyesterification of bifunctional acids with ethylene glycol (Pechini process) decomposed about 100-degrees-C higher than those without the diol. BaCO3 was identified by IR and XRD as a reaction intermediate. EGA proved that the amount of BaCO3 was below 10% of the total barium, and that the barium exists mainly as a nitro-compound up to 650-degrees-C. Phase-pure BaBiO3 with a moderately high surface area (1.4 m2/g) could be synthesised from a citrate precursor by the Pechini process at around 850-degrees-C.
引用
收藏
页码：1157 / 1164
页数：8
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