Chlorination of cerium dioxide

The chlorination of cerium dioxide was studied by thermogravimetry under controlled atmosphere between 800 and 950 °C. An apparent activation energy of 190 kJ mol−1 was observed. To discriminate the effect of the vaporization of the CeCl3 on the chlorination rate, this process was also studied with the same technique between 850 and 950 °C. An apparent activation energy of 184 kJ mol−1 was determined. The CeO2 chlorination rate was found to be under a chemical-mixed control influenced by the vaporization of CeCl3.