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Preparation of Extrapure Cesium Iodide

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Abstract

This paper presents results of a physicochemical study of the preparation of extrapure-grade (99.998%-pure) cesium iodide from a technically pure product obtained by reacting cesium carbonate and hydriodic acid. The synthesized CsI was purified in two steps, involving vacuum drying and high-temperature distillation. We calculated kinetic constants of vacuum drying and evaluated water content as a function of temperature. The final step in removing regulated impurities from CsI was high-temperature distillation. Metallic impurities in the samples thus prepared were determined using inductively coupled plasma mass spectrometry and X-ray diffraction. The results are presented for the first time.

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ACKNOWLEDGMENTS

In this study, we used equipment at the Shared Physical Characterization Facilities Center, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, supported by the Russian Federation Ministry of Science and Higher Education (state research target for the Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, in the field of basic research).

Funding

This work was supported by the Russian Foundation for Basic Research, research project no. 19-33-90217.

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Correspondence to M. N. Brekhovskikh.

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Mastryukov, M.V., Brekhovskikh, M.N., Klimova, V.M. et al. Preparation of Extrapure Cesium Iodide. Inorg Mater 56, 1050–1054 (2020). https://doi.org/10.1134/S0020168520100106

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  • DOI: https://doi.org/10.1134/S0020168520100106

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