Thermal properties of Zn and Co(II) dihydrogenphosphate solid solution
Chem. Met. Alloys 10 (2017) 1-6
N.M. ANTRAPTSEVA, L.B. ÊOVAL, I.S. NOVAK
The thermal properties of the solid solution Zn1-xCox(H2PO4)2·2H2O (0 < x < 1.00) were investigated. It was found that the thermal stability of the dihydrogenphosphates correlates with the cationic composition and increases with increasing cobalt(II) content. The composition-dependent temperature range of formation and thermal stability of the products of partial and complete dehydration were determined. It was established that the final product of dehydration is a cyclotetraphosphate solid solution of composition (Zn1‑xCox)2P4O12, 0 < x < 1.00 (monoclinic, space group C2/c, Z = 4), which remains stable when heated to 900°C. A sequence of solid-phase transformations taking place during the heat treatment is proposed.
Thermal properties of Zn0.5Co0.5(H2PO4)2·2H2O.
Phosphates / Solid solutions / Thermal properties