ISSN 1608-4039 (Print)
ISSN 1680-9505 (Online)


phase diagrams

Search for low-melting functional electrolytes in a four-component reciprocal system Na⁺, Rb⁺, Cs⁺ || F⁻, NO₃⁻

The division of the four-component reciprocal system Na+, Rb+, Cs+ || F, NO3 into stable elements was carried out for the first time. The phase tree, confirmed by the experimental data from the differential thermal analysis, was constructed. The chemical interaction in a yet unexplored faceting element, i. e. in the three-component reciprocal system Na+, Cs+ || F, NO3, and in the four-component reciprocal system was studied.

Phase diagrams of the ternary systems NaBH4–NaOH–H2O, KBH4–KOH–H2O, NaBO2–NaOH–H2O and KBO2–KOH–H2O by -10°С

A study of the solubility in the ternary systems NaBH4–NaOH–H2O, KBH4–KOH–H2O, NaOH–NaBO2–H2O и KOH–KBO2–H2O is of special fundamental and practical interest. The first two systems are used as a fuel and as a hydrogen source in hydrogen power engineering that includes the low-temperature fuel cells; borohydrides are converted into metaborates. Hence, the last two systems represent the discharged by-product.