Effect of Irradiation on the Dynamics of Gas Evolution in Thermal Oxidation of Diamide Extractants in F-3 Diluent
| Autor: | I. V. Skvortsov, Elena Belova, Boris F. Myasoedov, Yu. S. Pavlov |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Thermal oxidation Gas evolution reaction Thermal decomposition Kinetics 010402 general chemistry 010403 inorganic & nuclear chemistry 01 natural sciences Diluent 0104 chemical sciences Autoclave Dicarboxylic acid chemistry Thermal stability Physical and Theoretical Chemistry Nuclear chemistry |
| Zdroj: | Radiochemistry. 60:595-600 |
| ISSN: | 1608-3288 1066-3622 |
| Popis: | The dynamics of gas evolution in thermal oxidation of solutions of 2,2'-bipyridine-6,6'-dicarboxylic acid di(N-ethyl-4-hexylanilide) (DYP-7), 2,6-pyridinedicarboxylic acid di(N-ethyl-4-fluoroanilide) [Et(pFPh)· DPA], and 2,2'-bipyridine-6,6'-dicarboxylic acid di(N-ethyl-4-ethylanilide) (DYP-9) in m-nitrobenzotrifluoride (F-3) diluent with 14 M HNO3 in open and closed vessels was studied. The effect of preliminary irradiation of the organic phase on the kinetics of thermolysis of the two-phase system was determined. Heating of the irradiated samples in a closed vessel (autoclave) leads to the pressure buildup, with the pressure reached increasing from 18 to 23 atm as the absorbed dose is increased from 0 to 1 MGy. The exothermic processes occurring in the systems caused a 4 to 10°С increase in the sample temperature. The thermal stability of all the irradiated diamide–F-3 diluent extraction systems studied is acceptable for practical use. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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