Thermochemical studies on the system Na-U-O

► Measurement of sodium and oxygen potentials over the three phase fields ► Measurement of sodium pressure by transpiration and oxygen potential by EMF. ► Determination of ΔfH〈NaUO3〉° at 298 K. ► The ΔfG〈Na6U7O24〉° was determined by sodium potential and oxygen potential.