STUDY OF THE THERMAL-DECOMPOSITION KINETICS OF SOME RARE-EARTH CARBONATES, FLUOROCARBONATES AND FLUOROOXALATES

被引：3

作者：

GAVRILOVA, GV ^{[1
]}

KONYUKHOV, MY ^{[1
]}

LOGVINENKO, VA ^{[1
]}

SEDOVA, GN ^{[1
]}

机构：

[1] LENSOVIET TECHNOL INST,ST PETERSBURG 198013,RUSSIA

来源：

JOURNAL OF THERMAL ANALYSIS | 1994年 / 41卷 / 04期

关键词：

KINETICS; RARE EARTH CARBONATES; FLUOROCARBONATES AND FLUOROOXALATES; THERMAL TRANSFORMATION;

D O I：

10.1007/BF02547168

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The thermal transformations of Pr and La carbonates, La, Ce, Pr, Nd, Sm, Eu and Gd fluorocarbonates, and La, Nd, Dy and Ho fluorooxalates were investigated. A Derivatograph Q-1000 (MOM, Hungary) was used for thermal analysis. The kinetics of the processes was studied in a flow reactor. The activation energies and preexponential factors for dehydration and decarbonization were calculated. Samples of Pr fluorocarbonate, Ho fluorooxalate, and Pr and La carbonates were exposed to gamma-irradiation (dose from 6.2.10(6) to 6.1.10(7) rad). The influence of the irradiation dose upon the kinetic parameters (E(a) and A) of the processes was investigated.

引用

页码：889 / 897

页数：9