Determination of the Thermal Stability of Impregnated Type Solid Extractant Based on Dibenzo-21-crown-7 and Organic Matrix MN-200

IF 0.9 Q4 CHEMISTRY, INORGANIC & NUCLEAR

Radiochemistry Pub Date : 2024-05-16 DOI:10.1134/s1066362224020140

A. V. Rodin, A. M. Koscheeva, K. V. Shelamov, L. V. Gezalyan, A. V. Ponizov, A. V. Ananiev

引用次数: 0

Abstract

The thermal stability of dibenzo-21-crown-7 and of MN-200 organic matrix based on styrene–divinylbenzene in inert and oxidizing atmosphere at temperatures of up to 600°С was studied. Solid extractants (SEs) were prepared from these components. These SEs are stable up to 300°С in inert atmosphere and up to 180–250°С in oxidizing atmosphere, depending on the presence of an additional diluent, fluorinated alcohol, in the SE. At higher temperatures, the SEs undergo exothermic processes accompanied by the formation of such major gaseous products as toluene, styrene, benzaldehyde, 1-ethyl-4-methylbenzene, and 1,3-dioxolane. Their yield depends on the type of the gaseous atmosphere used.

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基于二苯并-21-冠醚-7 和有机基质 MN-200 的浸渍型固体萃取剂热稳定性的测定

摘要研究了二苯并-21-冠醚-7 和基于苯乙烯-二乙烯基苯的 MN-200 有机基质在惰性和氧化气氛中的热稳定性。用这些成分制备了固体萃取剂（SE）。这些固体萃取剂在惰性气氛中的稳定性可达 300°С，在氧化气氛中的稳定性可达 180-250°С，具体取决于萃取剂中是否含有额外的稀释剂--氟化醇。在较高温度下，SE 会发生放热过程，并形成甲苯、苯乙烯、苯甲醛、1-乙基-4-甲基苯和 1,3-二氧戊环等主要气态产物。它们的产量取决于所用气体环境的类型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Radiochemistry CHEMISTRY, INORGANIC & NUCLEAR-

CiteScore

1.30

自引率

33.30%

发文量

期刊介绍： Radiochemistry is a journal that covers the theoretical and applied aspects of radiochemistry, including basic nuclear physical properties of radionuclides; chemistry of radioactive elements and their compounds; the occurrence and behavior of natural and artificial radionuclides in the environment; nuclear fuel cycle; radiochemical analysis methods and devices; production and isolation of radionuclides, synthesis of labeled compounds, new applications of radioactive tracers; radiochemical aspects of nuclear medicine; radiation chemistry and after-effects of nuclear transformations.