Thermoanalytical behavior of neodymium nitrate hexahydrate Nd(NO3)3·6H2O

被引：0

作者：

P. Melnikov

I. V. Arkhangelsky

V. A. Nascimento

L. C. S. de Oliveira

G. A. Wandekoken

D. Muniz de Albuquerque

机构：

[1] Federal University of Mato Grosso do Sul,

[2] Moscow State University,undefined

来源：

Journal of Thermal Analysis and Calorimetry | 2020年 / 139卷

关键词：

Neodymium nitrate; Thermal decomposition; Lanthanides; Thermolysis;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The hexahydrate Nd(NO3)3·6H2O melts in its water of crystallization at 328 K. There are no phase transitions at least above 233 K. Similar to other nitrates in the lanthanide series, its thermal decomposition is a gradual process, which entails the formation of a cluster 6[Nd(NO3)3·6H2O] after the condensation of 6 mol of the initial monomer. During this process, a multicomponent multiphase system exists far from equilibrium and is continuously maintained in this state until normal neodymium oxide is formed. The main volatile products of thermolysis are water, nitric acid, azeotrope 68% HNO3–32% H2O, nitrogen dioxide and oxygen. The proposed mechanism satisfactorily explains the mass losses in accordance with the experimental results.

引用

页码：3493 / 3497

页数：4

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