用于凝固锝和锝-镎馏分的类矿物固结基质材料

IF 1 Q4 CHEMISTRY, INORGANIC & NUCLEAR

Radiochemistry Pub Date : 2025-10-13 DOI:10.1134/S1066362225040125

K. K. Korchenkin, V. A. Orlova, A. V. Gazdanova, N. V. Lavina

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引用次数: 0

摘要

研究了磷酸盐Tc0.5Zr0.5P2O7、Tc0.25Zr0.75P2O7和Tc0.25Np0.25Zr0.5P2O7在固载锝和锝-镎馏分中的相形成。粉末由溶液沉淀法得到。目标相形成温度为600℃。所得化合物为单相产物，在立方体系中结晶，空间群为Pa-3。研究了VVER-1000 SNF工艺中实际工艺锆组分的凝固过程。通过长期静态浸出研究了样品的水解耐久性。浸出程度为：Tc，不大于0.03%；Np, 0.008%;Zr，小于0.001%。

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Mineral-Like Consolidating Matrix Materials for Solidification of Technetium and Technetium–Neptunium Fractions

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Mineral-Like Consolidating Matrix Materials for Solidification of Technetium and Technetium–Neptunium Fractions

The phase formation of the phosphates Tc_0.5Zr_0.5P₂O₇, Tc_0.25Zr_0.75P₂O₇, and Tc_0.25Np_0.25Zr_0.5P₂O₇ for the immobilization of technetium and technetium–neptunium fractions was studied. The powders were obtained by precipitation from solution. The target phase formation temperature was 600°C. The compounds obtained are single-phase products and crystallize in the cubic system, space group Pa–3. The solidification of the real technetium–zirconium fraction from VVER-1000 SNF processing was performed. The hydrolytic durability of the samples was studied by long-term static leaching. The degrees of leaching were as follows: Tc, no more than 0.03%; Np, 0.008%; Zr, less than 0.001%.

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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.