Mechanism and Kinetics of Thermal Decomposition of Uranyl Nitrate Hexahydrate under the Nonisothermal Conditions

被引：15
|
作者：
Kozlova, R. D. [1 ]
Matyukha, V. A. [1 ]
Dedov, N. V. [1 ]
机构：
[1] Fed State Unitary Enterprise, Siberian Chem Combine, Seversk, Tomsk Oblast, Russia
来源：
RADIOCHEMISTRY | 2007年 / 49卷 / 02期
关键词：
82.30.Lp;
D O I：
10.1134/S1066362207020063
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Thermal decomposition of UO2(NO3)(2) center dot 6H(2)O to U3O8 was studied by thermogravimetric (TG), differential thermogravimetric (DTG), and differential thermal (DTA) analyses in combination with gas-chromatographic and chemical methods. The process is described by kinetic data recorded under the nonisothermal conditions. UO2(NO3)(2) center dot 6H(2)O transforms into UO3 in eight main stages in the 40-300 degrees C range, and UO3 into U3O8, in three stages with the peaks of weight loss at 580, 620, and 645 degrees C.
引用
收藏
页码：130 / 134
页数：5
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