Partition of the Quaternary Reciprocal System Na,K∥Cl,I,CrO4 and Investigation of Its Stable Elements

Investigation of multicomponent salt systems is important in the context of the wide use of invariant mixtures as electrolytic media for separation of metals and heat-storage materials. In this work, the quaternary reciprocal system Na,K∥Cl,I,CrO 4 was partitioned into simplexes using graph theory....

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Bibliographic Details
Published inRussian journal of inorganic chemistry Vol. 64; no. 2; pp. 247 - 250
Main Authors Egorova, E. M., Likhacheva, S. S., Garkushin, I. K.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.02.2019
Springer Nature B.V
Subjects
Chemistry
Chemistry and Materials Science
Differential thermal analysis
Eutectic composition
Graph theory
Inorganic Chemistry
Melting points
Physicochemical Analysis of Inorganic Systems
Potassium chloride
Potassium chromates
Product design
Tetrahedra
invariant point
eutectic
phase equilibria
differential thermal analysis
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Summary:Investigation of multicomponent salt systems is important in the context of the wide use of invariant mixtures as electrolytic media for separation of metals and heat-storage materials. In this work, the quaternary reciprocal system Na,K∥Cl,I,CrO 4 was partitioned into simplexes using graph theory. The tree of phases of the system was constructed, and stable elements were determined. The stable tetrahedron NaCl–KCl–KI–K 2 CrO 4 of the system Na,K∥Cl,I,CrO 4 was studied by differential thermal analysis. In the stable tetrahedron, the melting point and composition (equiv. %) of a quaternary eutectic were found: (0.25% KCl, 42.40% NaCl, 30.92% KI, 26.43% K 2 CrO 4 ; 451°C).
ISSN:0036-0236
1531-8613
DOI:10.1134/S0036023619020049