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The thermal decomposition of CeCl_3·7 H_2 O was studied from room temperature to 800 ℃. Analysis was performed by applying TG-DTA, XRD, FESEM, EDXS, and TG-MS technologies to investigate the thermal decomposition mechanism of CeCl_3·7 H_2 O in air atmosphere. Multiple forms of hydrated cerium chloride compound were observed in the dehydration products. The CeCl_3 hydrolysis product was separated by a continuous centrifugation method and the phase composition was identified as CeO_2,Ce(OH)_3,and CeCl_3·4 H_2 O by XRD analysis. The evolved gas composition was identified as CI_2 and HCI by TG-MS system. Based on the analysis of the experimental results, the mechanism of thermal decomposition of CeCl_3·7 H_2 O was proposed with completion of the dehydration reaction at 224 ℃,the hydrolysis reaction at 170-480 ℃,and the oxidation reaction of CeCl_3 above 480 ℃.
The thermal decomposition of CeCl 3 · 7 H 2 O was studied from room temperature to 800 ° C. Analysis was performed by applying TG-DTA, XRD, FESEM, EDXS, and TG-MS technologies to investigate the thermal decomposition mechanism of CeCl 3 · 7 H 2 O in air atmosphere. Multiple forms of hydrated cerium chloride compound were observed in the dehydration products. The CeCl 3 hydrolysis product was separated by a continuous centrifugation method and the phase composition was identified as CeO 2, Ce (OH) _3, and CeCl_3 · 4 H_2 O Based on the analysis of the experimental results, the mechanism of thermal decomposition of CeCl_3 · 7 H_2 O was proposed with completion of the dehydration reaction at 224 ° C, the hydrolysis reaction at 170-480 ° C, and the oxidation reaction of CeCl_3 above 480 ° C.