摘要
利用水热反萃的方法从载铁有机相中制备超细氧化铁粉末国内外文献还鲜见报道。分析了萃铁有机相的热稳定性以及有机相中铁浓度,自由环烷酸浓度,反应温度和晶种引入对水热反萃率的影响。由初速率方法求出反应活化能为94kJ/mol,表明水热反萃过程为化学反应控制。
Precipitation from mixed aqueous-organic systems by hydrothermal stripping is a method to synthesize oxide metal powder for high performance applications. Factors affecting the stripping process, such as initial iron concentration, naphthenic acid concentration, seed and temperature, were investigated. The apparent activation energy by the initial rate method is 94 kJ/mol, indicating that the process is controlled by a chemical reaction.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2003年第5期530-531,534,共3页
Journal of Functional Materials
基金
国家自然科学基金重大资助项目(59934080)
关键词
水热反萃
氧化铁粉末
活化能
载铁环烷酸
超细粉末
Activation energy
Hydrometallurgy
Iron
Organic acids
Powder metals
Stripping (removal)
Thermodynamic stability