摘要
报道以化学气相传输法制备无水LuBr3。以稀土氧化物Lu2O3为原料,与铝粉及溴直接进行反应,可以得到LuBr3和Al2O3的混合物。当铝与溴过量时,铝与溴生成的AlBr3在高温下形成气态Al2Br6,并与LuBr3反应得到气态配合物,该配合物在低温下分解。如果控制适当的温度梯度场,可实现LuBr3与其他固体分离。产物纯度>99.5%。
The preparation of anhydrous LuBr_3 by chemical vapor transport method is reported.Lu_2O_3 is the raw materials, a mixture of LuBr_3 and Al_2O_3 is formed as Lu_2O_3 reacts directly with Br and Al. (AlBr_3) is formed with excess amount of Al and Br_2. Vapor Al_2Br_6 forms at high temperature. It further reacts with LuBr_3 to obtain complex LuAl_3Br_(12). And the complex decomposes at low temperature. (LuBr_3) is separated form other solids at an proper temperature gradient.
出处
《应用化工》
CAS
CSCD
2005年第5期317-318,共2页
Applied Chemical Industry
关键词
稀土
溴化铝
气态配合物
化学气相传输
rare earth
AlBr_3
gaseous complex
chemical vapor transport
