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

Abstract

Gaseous CePO2 has been identified by Knudsen effusion mass spectrometry during vaporization of CeO2 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 CePO2 was determined to be −508 ± 41 kJ ⋅ mol−1 at the temperature 298 K.