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Viscosity of the Molten System KF—KCl—K2TiF6

D. K. Nguyen and V. Daněk

Institute of Inorganic Chemistry, Slovak Academy of Sciences, SK-842 36 Bratislava

 

Abstract: The viscosity of the melts of the system KF-KCl-K2TiF6 has been measured by means of the computerized torsional pendulum method. In the ternary system at constant temperature the viscosity increases from KCl through KF and from the binary system KF-KCl to K2TiF6.Additivity of the logarithms of viscosity Ras adopted as the ideal behaviour of the mixture. Negative deviations from such additive behaviour were found in the binary system KF-KCl probably due to the nonrandom mixing of the anions. Positive deviations from the ideal behaviour were found in the binaries KF-K2TiF6 and KCl-K2TiF6 probably due to the formation of larger TiF73- and TiF6Cl3- anions, respectively.Statistically significant ternary interaction indicates the pronounced formation of both TiF73- and TiF6Cl3- anions also in the ternary system.

Full paper in Portable Document Format: 501a4.pdf

 

Chemical Papers 50 (1) 4–7 (1996)

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