Study on Technological Conditions in Preparation of Anhydrous Cerium Chloride

Technological conditions in preparation of high purity anhydrous cerium chloride with ammonium chloride as chlorinating agent to chlorinate cerium oxide in argon atmosphere were studied.The reaction temperature and time,and dosing ratio of reactants by orthogonal experiments for optimization of the preparation conditions were examined,and its product was characterized by XRD.The results showed that by chlorinating cerium oxide for 30 min with ammonium chloride dosage in a molar ratio of n(NH4Cl):n(CeCl4)= 12:1 at 300℃,the chlorinating rate of oxide reached 99.6%,the impurity in the anhydrous cerium chloride product was less than 5%.