Thermodynamic Properties of Platinum Diatomics

Author： Tandon Pavitra   Uttam K. N.  

Publisher： Johnson Matthey

ISSN： 1471-0676

Source： Platinum Metals Review, Vol.53, Iss.3, 2009-07, pp. : 123-134

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

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Abstract

Thermodynamic properties of diatomic molecules containing platinum (PtH, PtC, PtN and PtO) have been calculated using spectroscopic data and partition function theory. Values of the Gibbs energy (G), enthalpy (H), entropy (S) and specific heat capacity at constant pressure (CP) are presented for each species in the temperature range from 100 K to 3000 K. To obtain the most accurate data, anharmonicity, nonrigidity and stretching effects have been incorporated in the calculations. The variation of these properties with temperature is also discussed in terms of different modes of molecular motion.

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