Abstract

The method of differential scanning calorimetry has been used to study the thermal stability of unirradiated and irradiated extractive mixtures containing 0.15 М of the extractive agent N,N,Nʹ,Nʹ-tetra-n-octyldiglycola (TODGA) in Isopar-M diluent with n-decanol or n-nonanol in relation to the sequence of contact with nitric acid. It was shown that heating within the range 50–250°С causes exothermic thermochemical processes in the starting extractive systems in the presence of nitric acid. The radiolysis stimulates the decomposition of an organic solution with release of gaseous products and changes both the thermal stability of the solutions under study and their interaction with nitric acid.

中文翻译：

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基于Todga的萃取混合物的热稳定性和辐射稳定性

摘要

差示扫描量热的方法已被用于研究的未经照射的热稳定性并照射含有0.15М萃取剂的萃取混合物Ñ，Ñ，Ñ '，Ñ ' -四-正-在ISOPAR-M稀释剂octyldiglycola（TODGA）用正癸醇或正丁醇壬醇与硝酸接触的顺序有关。结果表明，在存在硝酸的情况下，加热范围为50-250°С会导致起始萃取系统发生放热热化学过程。辐射分解刺激了有机溶液的分解并释放出气态产物，并改变了所研究溶液的热稳定性以及它们与硝酸的相互作用。