Thermodynamics of the Evaporation of Yttrium Trichloride in the Form of YCl3 and Y2Cl6 Molecules
| Autor: | E. L. Osina, S. B. Osin, L. N. Gorokhov |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Vapor pressure Enthalpy Evaporation chemistry.chemical_element 02 engineering and technology Yttrium Partial pressure Atmospheric temperature range 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry Enthalpy of sublimation Physical chemistry Physical and Theoretical Chemistry Total pressure 0210 nano-technology |
| Zdroj: | Russian Journal of Physical Chemistry A. 93:804-808 |
| ISSN: | 1531-863X 0036-0244 |
| DOI: | 10.1134/s0036024419050248 |
| Popis: | Values of the molecular constants of YCl3 and Y2Cl6 molecules are selected and their thermodynamic functions are calculated as a result of a critical analysis of the experimental and theoretical data on the structure and vibrational frequencies of the monomeric and dimeric forms of yttrium trichloride. The composition of yttrium trichloride vapor in the temperature range of 1317–1646 K is calculated, for which published data on the total pressure are available. It is found that the Pd/Pm vapor pressure ratio in this temperature range grows from 0.15 to 0.21. Values of the enthalpy of sublimation (in the form of monomeric and dimeric molecules) and the enthalpy of formation of YCl3(g) and Y2Cl6(g) are calculated using the obtained partial pressures. The determined values are entered into the database of the IVTANTERMO software package. |
| Databáze: | OpenAIRE |
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