BBr_3的合成

Synthesis of BBr_3

在合成ＢＢｒ３的方法中，元素硼溴化法是比复分解法和碳化硼溴化法容易实现的合成方法．在制备元素硼的方法中，Ｍｇ－Ｂ２Ｏ３还原法是比 Ｎａ－Ｂ２Ｏ３还原法、Ａｌ－Ｂ２Ｏ３还原法和Ａｌ－硼砂还原法操作方便且产率较高的合成方法．采用聚四氟乙烯管道可以对淇和ＢＢｒ３取得满意的防腐和密封效果，冰盐浴可以实现高温ＢＢｒ３气体的冷凝．

The synthesize BBr3 by way of boron bromination was introduced. In preparation of element boron, B203 was reduced by Mg element, the preparated method is more facile to handle and has higher pro- ductivity compared with other methods. It is found that polyfluortetraethylene pipes are more resistence to cor- rosion of bromine and boron bromide at high temperatures. The condensation of high-temperature BBr3 gas can be carried out by use of ice-salt bath.