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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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Chemical Papers
From the journal Chemical Papers Volume 60 Issue 4

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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https://doi.org/10.2478/s11696-006-0047-3

Articles in the same Issue

  1. Influence of medium on the kinetics of oxidation of iron(II) ion with t-butyl hydroperoxide
  2. Synthesis of new thiazolo[2,3-b]pyrimidine derivatives of pharmaceutical interest
  3. Enthalpic analysis of the CaTiSiO5 system
  4. Kinetic, spectrophotometric determination of nanogram levels of manganese(II) using catalytic azo dye—potassium periodate—1,10-phenanthroline system
  5. Application of a ternary complex of tungsten(VI) with 4-nitrocatechol and thiazolyl blue for extraction-spectrophotometric determination of tungsten
  6. Determination of risperidone at picogram level in human urine by luminol—H2O2 chemiluminescence
  7. Electrochemical dissolution of chalcopyrite studied by voltammetry of immobilized microparticles
  8. Colon tissue concentrations of copper, iron, selenium, and zinc in colorectal carcinoma patients
  9. Structure of tetrakis(pyridinioacetate) neodymium(III) tetrahydrate perchlorate
  10. Thermally stable oligomer—Metal complexes based on oligo-ortho-aminophenol and oligophenylazomethinephenol
  11. Adsorption of SO2 on alumina
  12. One-pot, three-component synthesis of secondary amines and trisubstituted hydrazines from ketones
  13. Synthesis of α,α′-bis(R-benzylidene)cycloalkanones catalyzed by potassium hydrogen sulfate under solvent-free conditions
  14. Electrical conductivity of the molten KF—K2TaF7 system
  15. New substituted mono-and bis(imidazolyl)pyridines and their application in nitroaldolisation reaction
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