Methods of purifying BT are disclosed. The method comprises adding at least one polyhydroxyl compound to a crude BT mixture comprising BT and at least one boron-containing compound to form a polyhydroxyl compound/BT mixture. In one embodiment, the polyhydroxyl compound/BT mixture is then heated to a temperature greater than the boiling point of BT but less than the boiling point of the at least one polyhydroxyl compound. In another embodiment, the polyhydroxyl compound/BT mixture is heated to a temperature greater than the melting point of the polyhydroxyl compound, and then to a temperature greater than the boiling point of BT but less than the boiling point of the at least one polyhydroxyl compound. A composition comprising BT is also disclosed.
揭示了一种纯化BT的方法。该方法包括向包含BT和至少一种含
硼化合物的粗BT混合物中添加至少一种多羟基化合物,以形成多羟基化合物/BT混合物。在一种实施例中,然后将多羟基化合物/BT混合物加热至大于BT的沸点但小于至少一种多羟基化合物的沸点的温度。在另一种实施例中,将多羟基化合物/BT混合物加热至大于多羟基化合物的熔点的温度,然后再加热至大于BT的沸点但小于至少一种多羟基化合物的沸点的温度。还公开了一种包含BT的组合物。