以氯化铜为原料 ,采用沉淀法制备了 Cu2 ( OH) 3Cl- Cu O纳米粉体 ,并借助XRD、TEM及 IR等技术对粉体结构和催化活性进行了研究 .结果表明 ,粉体的最佳合成条件为 :Cu Cl2 浓度为 0 .5～ 3.0 mol/ L,Na OH浓度为 4.0～ 6 .0 mol/ L,反应液p H值为 8.0～ 9.0 ,蒸汽浴温度为 75～ 90℃ ,保温时间为 0 .5 h.其中反应液 p H值是控制粉体物相、粒子大小、形貌和催化活性的关键 . Cu2 (OH) 3Cl-CuO nanopowders were prepared by precipitation method using cupric chloride as raw material, and the structure and catalytic activity of the powders were studied by means of XRD, TEM and IR etc. The results showed that the The optimum synthesis conditions were as follows: the concentration of Cu Cl2 was 0.5-3.0 mol / L, the concentration of NaOH was 4.0-6.0 mol / L, the pH of the reaction solution was 8.0-9.0, the temperature of the steam bath was 75-90 ℃ , Holding time is 0.5 h. The p H value of the reaction solution is the key to control the powder phase, particle size, morphology and catalytic activity.