纳米氢氧化铝制备工艺条件与粒径的定量关系  

Relation between particle size and synthetic condition of Al(OH)_3

作　　者：文衍宣[1] 陈书科[1] 胡雪玲[1] 粟海锋[1] 黄映恒[1] 童张法[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《无机盐工业》2006年第8期29-31,共3页Inorganic Chemicals Industry

摘　　要：采用均匀沉淀-共沸蒸馏法制备纳米氢氧化铝。为了得到制备条件与粒径的关系,考察了反应时间、搅拌速率、硝酸铝浓度、尿素与硝酸铝的物质的量比对粒径的影响。经验方程Y=9.58×10-4X21-0.996X1+76.54 lnX2+1.27X23-25.25X3+435.4X24-1 835.52X4+2 320.84可以很好地表示氢氧化铝的平均粒径与工艺参数的关系。在最佳条件下纳米氢氧化铝的平均粒径约为70 nm,绝大部分在100 nm以下。研究结果可用于纳米氢氧化铝粒径的控制和优化。Aluminum hydroxide is synthesized by homogeneous precipitation - azeotropic distillation method. In order to get relation between mean diameter and synthetic condition of aluminum hydroxide, the effects of stirring speed, reaction time, initial reaction concentration of aluminum nitrate, mole ratio of urea to aluminum nitrate on the particle size are investigated. The empirical equation Y=9.58×10^-4X1^2-0.996X1＋76.541nX2＋1.27X3^2-25.25X3＋435.4X4^2-1835.52X4＋2320.84 can be used to express the relation between mean diameter and synthetic condition. The mean diameter of Al（ OH）3 prepared at optimum condition is about 70 nm and the majority of particles are below 100 nm. The resuits provided here can be used to control and optimize the diameter of Al（OH）3.

关 键 词：纳米材料 氢氧化铝 均匀沉淀法 

分 类 号：TQ133.1[化学工程—无机化工]