Regularities of melting behavior of
intermediate compounds in halide molten salt systems①
intermediate compounds in halide molten salt systems①
(College of Chemistry and Chemical Engineering, Xiangtan University,
Xiangtan 411105, P.R.China)
Xiangtan 411105, P.R.China)
Abstract: The regularities of melting behavior for nine kinds of stoichiometries including 311compounds were discussed by pattern recognition method with bond parameters as features. The compounds of the nine kinds of stoichiometries were MeMe′X2, MeMe′X3, Me2Me′X4, MeMe′X4, MeMe′2X5, MeMe′X5, Me2Me′X6, Me3MeX6and MeMe′2X7respectively (Me, Me′denote metallic elements, X denotes halogen). It has been found that the congruent or incongruent melting of intermediate compounds in molten salt systems distribute in different regions. In addition, four general regularities for melting behavior of halides were summarized on the basis of the nine semi-empirical models obtained from the known phase diagrams.
Key words: intermediate compound; melting behavior; molten salt system