采用V_2O_5和C粉为原料制备了V_2O_3粉体。通过热力学计算证实了反应的可行性,研究了不同的V_2O_5∶C配比及合成温度对产物组成的影响。结果表明:当V_2O_5∶C配比为3∶4,1 000℃保温2h后,得到的产物中有少量VO_2和C相存在;将产物进一步球磨混合,1 000℃保温1h后可以获得较纯的V_2O_3相。粉体颗粒为不规则状,粒度在1~30μm。 V_2O_3 powders were prepared by using V_2O_5 and C powders as raw materials. The feasibility of the reaction was confirmed by thermodynamic calculation, and the effects of different ratios of V 2 O 5: C and the synthesis temperature on the product composition were studied. The results showed that when the ratio of V 2 O 5:C was 3: 4 and 1000 ℃ for 2 h, a small amount of VO 2 and C phases were present in the product. The products were further mixed by ball milling and kept at 1 000 ℃ for 1 h, V_2O_3 phase. Powder particles are irregular, particle size of 1 ~ 30μm.