ABSTRACT

In this experimental work, the oxygen concentration electrochemical galvanic cell of the type (-) Pt|Pt(s), PtTe(s), TeO2(s,l)|YSZ|O2(g)|Pt (+) was applied to determine the thermodynamic properties of intermetallic platinum monotelluride PtTe. Yttria-stabilized zirconia solid electrolyte was utilized as a fast oxygen ion conductor. The repeatability of the experimental results was ensured by conducting three identical runs in stepwise heating and cooling cycles. The standard Gibbs energy of formation of PtTe was determined for the first time in the temperature range from (890 to 998) K to be: DfG /(kJ mol-1) = -73.54 + 28.57.10-3 .T/K: The enthalpy of fusion and melting temperature of tellurium dioxide TeO2 were redetermined.

Compounds

#	Formula	Name
1	Pt	platinum
2	O2Te	tellurium dioxide
3	O2	oxygen
4	PtTe	platinum telluride (PtTe)
5	Te	tellurium

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Phase	Method	#Points
POMD	2	Molar enthalpy of transition or fusion, kJ/mol ; Crystal	Crystal Liquid Air at 1 atmosphere	Derived from reaction Gibbs energy	1
POMD	2	Triple point temperature, K ; Crystal	Crystal Liquid Air at 1 atmosphere	Derived from reaction Gibbs energy	1
RXND	1 2 4 3	Molar Gibbs energy of reaction, kJ/mol		Calculated from EMF cell potential	19
RXND	1 2 4 3	Molar Gibbs energy of reaction, kJ/mol		Calculated from EMF cell potential	3
RXND	1 4 5	Molar Gibbs energy of reaction, kJ/mol		Calculated from EMF cell potential	12

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Thermodynamic properties of intermetallic PtTe determined by means of a solid electrolyte EMF method

Sukhomlinov, D.[Dmitry], Taskinen, P.[Pekka]

ABSTRACT