Efficient Removal of Polyvalent Metal Impurities from KH2PO4 by Crystallization
- Autores: Komendo I.Y.1, Mikhlin A.L.1, Volkov P.A.1, Dosovitskii A.E.1, Allakhverdov G.R.1
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Afiliações:
- State Scientific-Research Institute of Chemical Reagents and High Purity Chemical Substances
- Edição: Volume 54, Nº 2 (2018)
- Páginas: 171-175
- Seção: Article
- URL: https://journals.rcsi.science/0020-1685/article/view/158409
- DOI: https://doi.org/10.1134/S0020168518020085
- ID: 158409
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Resumo
The separation factors of metal impurities for potassium dihydrogen phosphate crystallization from nonstoichiometric solutions have been experimentally determined. Based on the results obtained, a method has been proposed that makes it possible to obtain a material containing aluminum, iron, chromium, and titanium at a level of ~5 × 10–2 ppm by weight from commercially available raw materials. In this method, a KH2PO4 solution is purified due to partial crystallization of the macrocomponent, so that the above impurities are concentrated in the solid phase. The purified solution is then boiled down with KOH additions.
Sobre autores
I. Komendo
State Scientific-Research Institute of Chemical Reagents and High Purity Chemical Substances
Autor responsável pela correspondência
Email: i.comendo@gmail.com
Rússia, ul. Bogorodskii val 3, Moscow, 107076
A. Mikhlin
State Scientific-Research Institute of Chemical Reagents and High Purity Chemical Substances
Email: i.comendo@gmail.com
Rússia, ul. Bogorodskii val 3, Moscow, 107076
P. Volkov
State Scientific-Research Institute of Chemical Reagents and High Purity Chemical Substances
Email: i.comendo@gmail.com
Rússia, ul. Bogorodskii val 3, Moscow, 107076
A. Dosovitskii
State Scientific-Research Institute of Chemical Reagents and High Purity Chemical Substances
Email: i.comendo@gmail.com
Rússia, ul. Bogorodskii val 3, Moscow, 107076
G. Allakhverdov
State Scientific-Research Institute of Chemical Reagents and High Purity Chemical Substances
Email: i.comendo@gmail.com
Rússia, ul. Bogorodskii val 3, Moscow, 107076
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