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Physicochemical and Methodological Approaches to the Development of Integrated Processes for the Preparation of High-Purity Substances

Authors
  • Fedorov, V. A.1
  • Potolokov, N. A.1
  • Menshchikova, T. K.1
  • Brekhovskikh, M. N.1
  • 1 Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia , Moscow (Russia)
Type
Published Article
Journal
Inorganic Materials
Publisher
Pleiades Publishing
Publication Date
Dec 24, 2019
Volume
55
Issue
12
Pages
1264–1272
Identifiers
DOI: 10.1134/S0020168519120045
Source
Springer Nature
Keywords
License
Yellow

Abstract

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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