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Enthalpic analysis of the CaTiSiO5 system

  • I. Nerád EMAIL logo , L. Kosa , E. Mikšíková and K. Adamkovičová
Published/Copyright: August 1, 2006
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Abstract

The relative enthalpy of titanite and enthalpy of CaTiSiO5 melt have been measured using drop calorimetry between 823 K and 1843 K. Enthalpies of solution of titanite and CaTiSiO5 glass have been measured by the use of hydrofluoric acid solution calorimetry at 298 K. Enthalpy of vitrification at 298 K, δvitr H(298 K) = (80.7 ± 3.4) kJ mol−1, and enthalpy of fusion at the temperature of fusion 1656 K, δfus H(1656 K) = (139 ± 3) kJ mol−1, of titanite have been determined from experimental data. The obtained enthalpy of fusion is considerably higher than up to the present published values of this quantity.

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Published Online: 2006-8-1
Published in Print: 2006-8-1

© 2006 Institute of Chemistry, Slovak Academy of Sciences

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