THERMAL AND X-RAY-ANALYSIS OF CERIUM OXY-CARBONATE

被引：6

作者：

AFIFY, N ^{[1
]}

ABDELHALIM, AS ^{[1
]}

ELHOUT, SM ^{[1
]}

机构：

[1] ATOM ENERGY AUTHOR,NATL RES CTR INCHASS,DEPT MET,CAIRO,EGYPT

来源：

JOURNAL OF THERMAL ANALYSIS | 1988年 / 34卷 / 01期

关键词：

DIFFERENTIAL THERMAL ANALYSIS - FUEL CELLS - Electrolytes - GRAVIMETRIC ANALYSIS - OXYGEN - Sensors - X-RAY ANALYSIS;

D O I：

10.1007/BF01913384

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This work describes the thermal decomposition behavior of cerium oxy-carbonate. DTA, TG, DTG and X-ray examinations were performed. The results indicate that the thermal decomposition of cerium oxy-carbonate in static air at a heating rate of 10 deg min** minus **1 involves three steps: dehydration at 58 degree C, removal of crystal water at 200 degree C and CO//2 release at 235 degree C. The activation energies of removal of crystal water and carbon dioxide release were found to be 59. 48 and 82. 33 kJ mol** minus **1, respectively. Ceria-based oxygen ion conductors have high ionic conductivity, which makes them interesting materials for application as solid electrolytes at moderate temperature ( less than 600 degree ), oxygen sensors and fuel cells. 5 Refs.

引用

页码：189 / 194

页数：6