Thermodynamic properties of gaseous cerium phosphate studied by Knudsen effusion mass spectrometry

Abstract

Abstract Gaseous CePO 2 has been identified by Knudsen effusion mass spectrometry during vaporization of CeO 2 and magnesium diphosphate from tungsten double, two‐temperature effusion cell. Structure and molecular parameters of gaseous cerium phosphate under study were determined using quantum chemical calculations. On the basis of equilibrium constants measured for gas‐phase reaction, standard formation enthalpy of CePO 2 was determined to be −508 ± 41 kJ ⋅ mol −1 at the temperature 298 K.