气溶胶反应器分解叠氮二乙基铝制备氮化铝纳米粉体

Aerosol Sythesis of Aluminum Nitride Powder Using Diethylaluminun Azide

以叠氮二乙基铝（ＣＨ３ＣＨ２）２ＡＩＮ３为前体物在气溶胶反应器中热分解制备氮化铝 ＡＩＮ纳米粉体．单 反应物且无载气使反应器简化．分解温度低于５００－７００℃．所得球状ＡＩＮ纳米粒子平均粒径为１０－５０ ｎｍ，表面积为１０３ｍ２／ｇ，活性高．该法为ＡＩＮ 纳米粉体的合成找到了一条新途径．

A aerosol process is described for making nanometric Aluminum Nitride powder by pyrolysis of single compound Diethylaluminun Azide.The process can produce spherical A1N powder with mean par- ticle diameter ranging from 10 to 50 nm at the temperature of furnace as lower as 500-700. The generated amorpous AIN powder is characterized by a BET surface area of 103m2/g and is very reactive toward moisture. A new way of preparing nanometric powder of AIN is found.