Studies of Process and Mechanism for Preparing Nano-Sized CeO_2 Powders via Homogeneous Precipitatio

• 作 者: 李霞章 陈志刚 陈建清 陈杨 倪超英
• 机 构: School of Material Science and Engineering Jiangsu University Zhenjiang 212013 China,chool of Mater
• 出 处: Journal of Rare Earths
• 发表日期: 2005年S1期
• 关键词: Precipitation Alcohol slurry parti showing

Nano-sized CeO_2 powders were synthesized by homogeneous precipitation method in alcohol-water solution with HMT as precipitator and the nano-particles were characterized by TEM and BET. The process parameters which influenced the sizes and agglomeration of nanometer CeO_2 powders were studied and the influence mechanism was discussed. The results show that the average size of the particles prepared by the above method with the best process parameters is about 8 nm, and the particles are of smaller size and better dispersion than those obtained from the ordinary powders synthesized by homogeneous precipitation in water solution.

Nano-sized CeO 2 powders were synthesized by homogeneous precipitation method in alcohol-water solution with HMT as precipitator and the nano-particles were characterized by TEM and BET. The process parameters which influenced the sizes and agglomeration of nanometer CeO 2 powders were studied and the influence mechanism was discussed. The results show that the average size of the particles prepared by the above method with the best process parameters is about 8 nm, and the particles are smaller size and better dispersion than those obtained from the ordinary mineral synthesized by homogeneous precipitation in water solution.