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)°C,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°C,Mo-Cu复合物纳米粉末粒度小于100nm。
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.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2010年第1期6-9,共4页
Rare Metal Materials and Engineering
基金
National Natural Science Foundation of China (50074014)
关键词
Mo—Cu复合粉
纳米
封闭循环氢还原
化学共沉淀
Mo-Cu composite powder
nanometer
closed circulation hydrogen reduction
chemical co-precipitation
