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[en] The density of melted LiCl-BeCl₂ blends has been measured by hydrostatic weighing. The temperature dependence of the density is given by empirical equations. Strong constriction of the blended melts is observed in the BeCl₂ concentration range from 0 to 50 mol.%. This effect is due to the breakdown of the polymeric structure of BeCl₂ and formation of BeCl₂-LiCl compounds with bridge bonds between Cl atoms

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[en] e. m. f. in binary systems of beryllium chloride with rubidium and cesium chlorides were measured. Concentration dependences of thermodynamic functions (mixing entropy Gibbs free energy) of beryllium chloride in the systems as well as with the participation of lithium chloride were analysed

[en] Using the method of boiling points vapour pressure over the melts BeCl₂-LiCl and BeCl₃-RbCl in the range of 3.3-33.3 mol.% beryllium chloride at 864-1337 K are measured. Using literature data on e. m. f. constants of thermal dissociation of the compounds Li₂BeCl₄ and Rb₂BeCl₄ are calculated. Over the melts of Li₂BeCl₄ diluted with lithium chloride a considerable vapour pressure of beryllium chloride is observed and thermal stability of Li₂BeCl₄ is significantly lower than that of Rb₂BeCl₄

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[en] Tensimetric investigation of melt-vapor equilibrium in the BeCl₂-CsCl system (20-33% Be) at 1078-1333 K is carried out to estimate total carrying away of Be from the melts as different compounds during Be preparation, calcUlations of partial pressures of vapor mixture components over the melts and the constants of Cs₂BeCl₄ thermal dissociation were carried out for the model with regard to BeCl₂, CsCl, (CsCl)₂ and Cs₂BeCl₄ in the vapor phase. Activity coefficients of the BeCl₂ and CsCl in their molten mixtures are calculated. Equation of temperature dependence of Cs₂BeCl₄ thermal dissociation constant is obtained. The constants of the equation correspond to characteristics of the dissociation process: ΔHsub(T)sup(O)=349 KI/mol, ΔSsub(T)sup(O)=184 I/mol gr

No abstract available