Thermal Stability of Nitric-Acid Solutions Containing Monoethanolamine

被引：8

作者：

Emel'yanov, A. S. ^{[1
,2
]}

Nazin, E. R. ^{[2
]}

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

Myasoedov, B. F. ^{[1
]}

机构：

[1] Russian Acad Sci, Frumkin Inst Phys Chem & Electrochem, Moscow 119071, Russia

[2] Res Ctr Nucl & Radiat Safety, Moscow 107140, Russia

来源：

RADIOCHEMISTRY | 2020年 / 62卷 / 06期

关键词：

monoethanolamine; nitric acid; thermal stability; exothermic reactions; gas evolution;

D O I：

10.1134/S1066362220060041

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Thermal stability of nitric-acid (0.8-6.6 M) solutions of monoethanolamine (MEA) in the temperature range 90-150 degrees C under atmospheric pressure and pressure exceeding that of the atmosphere (autoclave) has been studied. It was found the interaction of solution components begins at the atmospheric pressure begins at 100-105 degrees C and HNO3 concentration of 1.4 M and is accompanied by the gas evolution without heat release. When solutions are heated in an autoclave, exothermic reactions appear under certain conditions, with gas evolution the intensity of which depends on the component concentration and temperature. The characteristics of the exothermic processes were determined. It was shown that, because of the sharp pressure buildup in the apparatus as a result of the exothermic reactions, evaporation of nitric-acid solution with MEA may be dangerous as regards the appearance of emergencies.

引用

页码：730 / 735

页数：6

共 7 条

[1] The effect of irradiation on the thermal stability of TBP solutions in Isopar-M
E. V. Belova
Z. V. Dzhivanova
A. V. Smirnov
M. I. Kadyko
S. V. Stefanovsky
[J]. MRS Advances, 2017, 2 (11) : 627 - 633
[2] Emel'yanov A.S., 2019, FIZIKOKHIM POVERKHN, V55, P582
[3] Khudyakova T.A., 1975, [Konduktometricheskii metod analiza, Conductometric Method of Analysis]
[4] Nazin E.R., 2009, Pozharovzryvobezopasnost tekhnologicheskikh protsessov radiokhimicheskikh proizvodstv (Fire and Explosion Safety of Technological Processes in Radiochemical Production)
[5] Sokolov I.P., 2019, YADERN RADIATS BEZOP, V92, P3
[6] Study of thermal and radiation stability of the extractant based on CMPO in fluorinated sulfones
S. V. Stefanovsky
I. V. Skvortsov
E. V. Belova
A. V. Rodin
[J]. MRS Advances, 2017, 2 (12) : 641 - 647
[7] TITOV AI, 1948, ZH OBSHCH KHIM+, V18, P733

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