Thermal stability of nitric acid solutions of reducing agents used in spent nuclear fuel reprocessing

被引：10

作者：

Obedkov, A. S. ^{[1
]}

Kalistratova, V. V. ^{[1
]}

Skvortsov, I. V. ^{[1
]}

Belova, E. V. ^{[1
]}

机构：

[1] RAS, AN Frumkin Inst Phys Chem & Electrochem, IPCE, Leninsky Prospect 31-4, Moscow 119071, Russia

来源：

NUCLEAR ENGINEERING AND TECHNOLOGY | 2022年 / 54卷 / 09期

关键词：

Thermal decomposition; Explosion safety; Carbohydrazide; Hydrazine nitrate; Acetohydroxamic acid; HYDROXYLAMINE; OXIDATION;

D O I：

10.1016/j.net.2022.03.034

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The thermal stability of carbohydrazide, hydrazine nitrate, acetohydroxamic acid in nitric acid solutions has been studied at atmospheric pressure and above atmospheric pressure. The volumes of gaseous products of thermolysis and the maximum rate of gas evolution have been determined at atmospheric pressure. It has been shown that, despite the high rate of gas evolution and large volumes of evolved gases, the conditions for the development of autocatalytic oxidation are not created. Exothermic processes are observed in a closed vessel in the temperature range of 50-250 degrees C. With an increase in the concentration of nitric acid, the temperatures of the onset of exothermic effects for all mixtures decrease, and the values of the total thermal effects of reactions increase, to the greatest extent for solutions with carbohydrazide. (C) 2022 Korean Nuclear Society, Published by Elsevier Korea LLC.

引用

页码：3580 / 3585

页数：6

共 25 条

[11] Decomposition Pathways for Aqueous Hydroxylammonium Nitrate Solutions: a DFT Study [J].