超细AlOOH的制备与表征  

Preparation and Characterization of Superfine AlOOH

作　　者：廖海达[1] 刘昌华[2] 白丽娟[1] 马少妹[1] 龙翔云[3] 

机构地区：[1]广西民族学院化学化工系,南宁市西乡塘530006 [2]西南师范大学化学化工学院,重庆400715 [3]广西大学化学化工学院,南宁530004

出　　处：《广西科学》2001年第1期34-37,共4页Guangxi Sciences

基　　金：平果铝业公司资助项目

摘　　要：以 Al2 (SO4) 3为原料 ,在 p H值为 3.5 ,溶胶浓度为 0 .4mol/L ,加入 0 .3%水溶性高分子分散剂 ,于 80℃下胶溶 4h,制得稳定溶胶 ,后经 5 h 10 0℃～ 15 0℃热处理 ,制得超细 Al OOH。用差热、 Zeta电势 ,X射线衍射、透射电子显微镜等测试手段对样品进行表征 ,超细 Al OOH为分散均匀的似球形 ,平均粒度为 70 nm左右。还讨论了溶胶 -凝胶热处理偶合法制备超细 AlAluminium sulphate was applied as a precursor.At pH=3 5, the colloid of 0 4 mol/L was added with water solvable high molecular dispersing agent, and kept at 80℃ for 4 hours. The steady colloid was obtained, and then was treated at 100℃~150℃ for 5 hours. The superfine powders of AlOOH were prepared. They were near spherically particles on average size about 70 nm, and were characterized by DTA,Zeta,XRD and TEM measurements. The technical conditions for preparing the superfine powders of AlOOH are discussed.

关 键 词：氢氧化铝 超细粉体 溶胶-凝胶法 制备 表征 氧化铝 

分 类 号：TQ133.1[化学工程—无机化工] TF821[冶金工程—有色金属冶金]