Abstract—
This paper summarizes results of studies aimed at developing physicochemical and scientific methodological principles of the preparation of high-purity substances by integrated technological processes. We rely on the identification and chemical transformations of impurities in the recovery from raw materials, synthesis, and ultrapurification of substances by various methods. A scientific methodological approach has been developed for choosing and substantiating integrated processes for the preparation of extrapure-grade (6N or 7N) compounds with a total content of trace impurities from 0.1 to 1 ppm by weight from standard and unconventional raw materials. We have obtained batches of high-purity arsenic- and gallium-containing substances and tested them in the technology of advanced microelectronic and optical materials.
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ACKNOWLEDGMENTS
In our research, 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 Presidium of the Russian Academy of Sciences, basic research program no. 15.
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Translated by O. Tsarev
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Fedorov, V.A., Potolokov, N.A., Menshchikova, T.K. et al. Physicochemical and Methodological Approaches to the Development of Integrated Processes for the Preparation of High-Purity Substances. Inorg Mater 55, 1264–1272 (2019). https://doi.org/10.1134/S0020168519120045
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DOI: https://doi.org/10.1134/S0020168519120045