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将二氧化铈和石墨粉以１∶９的摩尔比配料，均匀混合并制团，在１５００～２０００℃的温度范围内及氩气保护下，于碳管炉内在不同温度下恒温反应１～４ｈ。利用ＸＲＤ和化学分析法确定反应产物的物相组成和二氧化铈的还原率，以探讨碳热还原过程中二氧化铈与碳的反应过程。结果表明：在本实验研究条件下，在１５００～１７００℃温度范围内，ＣｅＯ２被碳还原的产物为Ｃｅ２Ｏ３；１７５０～１８００℃温度范围内，ＣｅＯ２被碳还原的产物为Ｃｅ２Ｃ２Ｏ２；１８５０℃时，ＣｅＣ２即可迅速生成。ＣｅＯ２与碳的作用要经历ＣｅＯ２→Ｃｅ２Ｏ３→Ｃｅ２Ｃ２Ｏ２→ＣｅＣ２的反应过程。
Mixing ceria and graphite powder in a molar ratio of 1: 9, uniformly mixing and making a group, carrying out isothermal reaction at different temperatures in an carbon tube furnace for 1 to 4 hours under the temperature range of 1500 to 2000 DEG C and argon protection . The phase composition of the reaction product and the reduction rate of ceria were determined by XRD and chemical analysis to investigate the reaction between ceria and carbon during the carbothermal reduction process. The results show that under the experimental conditions, the product of CeO2 reduction by carbon is Ce2O3 in the temperature range of 1500-1700 ℃. The product of CeO2 reduction by carbon is Ce2C2O2 in the temperature range of 1750-1800 ℃. When CeO2 Can be quickly generated. The reaction between CeO2 and carbon undergoes the reaction of CeO2 → Ce2O3 → Ce2C2O2 → CeC2.