Densities of Melts of the System KF?K2MoO4?B2O3 |
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Authors: | M Chrenkov V Danêk A Silný |
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Institution: | M. Chrenková,V. Danêk,A. Silný |
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Abstract: | The density of melts of the system KF? K2MoO4? B2O3 was measured. The molar volume in the binary system KF? K2MoO4 deviates only little from the ideal course, which indicates the extended thermal dissociation of the congruently melting additive compound K3FMoO4. In the KF? B2O3 binary system the formation of KBF4 and K2B4O7 leads to the volume expansion, like in the K2MoO4? B2O3 system, where the volume expansion may be described by the formation of the heteropolyanions BMo6O24]9?. The significant deviation from the ideal behaviour in the ternary system KF? K2MoO4? B2O3 refers to the pronounced interaction, most probably due to the substitution of oxygen atoms in the coordination sphere of the heteropolyanion with the fluorine ones. |
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Keywords: | Density of melts system potassium fluoride/potassium molybdate/boron oxide |
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