中文摘要：

以（NH4）6Mo7O24·2H2O和CuSO4,5H2O（Mo：Cu=60：40，质量比，下同）为原料，采用化学共沉淀制备Mo—Cu复合氧化物粉末，再经过氢还原得到Mo—Cu复合物纳米粉末。结果表明：化学共沉淀的条件是反应温度为（50±5）℃，pH值为（5．1±0．1），陈化时间为（8±1）h；Mo—Cu复合氧化物粉末粒度为20nm；氢还原温度为650℃，Mo—Cu复合物纳米粉末粒度小于100nm。

英文摘要：

Mo-Cu （Mo：Cu=60：40, mass ratio） predecessor powder was prepared by chemical co-precipitation taking （NH4）6Mo7024-2H20 and CuSO4·5H2O as starting materials. And then the Mo-Cu predecessor powder was reduced by hydrogen in closed circulation system to prepare the Mo-Cu composite nano-powder. The results reveal that conditions of the chemical co-precipitation are that reaction temperature is （50±5） ℃, pH value （5.1±0.1）, and ageing time （9±1） h. Under the conditions mentioned above, the average particle size of the prepared the Mo-Cu predecessor powder is 20 nm. The hydrogen reduction temperature during closed circulation is 650℃. The particle size of obtained Mo-Cu composite powder is less than 100 mm.