Ceramics-Silikáty 46, (1) 29 - 32 (2002) |
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PREDICTION OF HEAT CAPACITIES OF SOLID BINARY OXIDES FROM GROUP CONTRIBUTION METHOD
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Leitner Jindřich 1, Sedmidubský David 2, Chuchvalec Pavel 3
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1 Department of Solid State Engineering
2 Department of Inorganic Chemistry
3 Department of Physical Chemistry,
Institute of Chemical Technology, Prague,
Technická 5, 166 28 Prague, Czech Republic
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Keywords: Heat capacity, Group contribution method, Oxides
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The group contribution method proposed by Golam Mostafa et al. and its use for the prediction of heat capacities of solid
binary oxides is discussed. Cpm(298) for 113 oxides were predicted and the mean error of 4.3% and the maximum error of
26.3% were found. The proposed temperature dependencies of Cpm of the form Cpm = a + bT + c/T² + dT² show in some cases
unrealistic behavior due to the negative value of the predicted constant d. |
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