The absolute dissociation oxygen pressure p above RuO2 was measured by the torsion-effusion method. By a least-square treatment of the data, the following equation for the temperature dependence of these pressures in the temperature (T) range 986-1221 K was selected: log(p) = (10.52 +/- 0.30) - (15,143 +/- 400)/ T, where p is measured in kPa. By treating the data by the second- and third-law methods the standard enthalpy associated with the dissociation of RuO2 (310 +/- 4 kJ mol(-1)) was derived. A comparison with literature data is also reported. (C) 2003 Elsevier B.V. All rights reserved.
Dissociation pressure and standard dissociation enthalpy of RuO2 / Bruno, Brunetti; Scardala, Paolo; Piacente, Vincenzo. - In: MATERIALS CHEMISTRY AND PHYSICS. - ISSN 0254-0584. - 83:1(2004), pp. 145-149. [10.1016/j.matchemphys.2003.09.012]
Dissociation pressure and standard dissociation enthalpy of RuO2
SCARDALA, Paolo;PIACENTE, Vincenzo
2004
Abstract
The absolute dissociation oxygen pressure p above RuO2 was measured by the torsion-effusion method. By a least-square treatment of the data, the following equation for the temperature dependence of these pressures in the temperature (T) range 986-1221 K was selected: log(p) = (10.52 +/- 0.30) - (15,143 +/- 400)/ T, where p is measured in kPa. By treating the data by the second- and third-law methods the standard enthalpy associated with the dissociation of RuO2 (310 +/- 4 kJ mol(-1)) was derived. A comparison with literature data is also reported. (C) 2003 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
