Thermodynamic properties of CaTiF5(s) |
| |
Institution: | Department of Metallurgical and Materials Engineering, The University of Alabama, P.O. Box 870202, A-129 Bevill Building, 126 Seventh Avenue, Tuscaloosa, AL 35487-0202, USA |
| |
Abstract: | Calcium titanofluoride CaTiF5(s) was prepared by solid-state reaction of CaF2(s) with TiF3(s) and characterized by X-ray diffraction method. The standard molar isobaric heat capacity of CaTiF5(s) was determined by a power compensated differential scanning calorimeter in the temperature from 230 K to 710 K. A solid-state galvanic cell with CaF2 as electrolyte was used to determine the standard molar Gibbs energy of formation of CaTiF5 in the temperature range from 803 K to 1005 K. The galvanic cell can be depicted as:The second law analysis of present data were carried out to derive the standard entropy and the enthalpy of formation and the values derived are 68.7 J · K−1 · mol−1 and −2848.4 kJ · mol−1, respectively. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|