INTERACTIONS IN THE LiPO_3 - MoO_3, NaPO_3 - MoO_3, AND KPO_3 - MoO_3 SYSTEMS

摘要

The MPO_3 - MoO_3 (M = Li, Na, K) pseudobinary systems have been examined by differential thermal analysis and x-ray phase analysis. The phase diagrams have been derived, and the temperatures and compositions of the eutectics have been determined. The compounds have been examined by x-ray phase analysis, infrared spectroscopy, and diffuse reflection spectroscopy. The conductivity and optical properties of the compounds MmoO_2(PO_4) (M = Li, Na, K) have been determined. The coordinates of the liquidus lines have been used to calculate the activities of the components in the MPO_3 - MoO_3 systems. Those activities show large negative deviations from ideal solutions. This indicates strong interaction between particles in the liquid state.