一、基本原理 固体吸附法是根据化合物化合键极性的不同来实现的。主要是通过化学吸附使SiCl_4同杂质分离。 硅是四价元素,SiCl_4是稳定的无电偶极矩的对称分子,满键(Si-Cl)的键能为91千卡/克,有着不能形成加成化学键的稳定的电子结构,而PCl_3和BCl_3等许多元素的氯化物的分子具有不同程度偶极矩的不对称分子,强 First, the basic principle Solid adsorption method is based on the compounds of different polarities to achieve. SiCl_4 is mainly separated from impurities by chemical adsorption. Silicon is a tetravalent element. SiCl_4 is a stable molecule with no dipole moment. The bond energy of Si-Cl is 91kcal / g, and the stable electronic structure can not form addition chemical bonds. However, PCl_3 And BCl_3 and many other elements of the chloride molecules have different degrees of dipole moment asymmetric molecules, strong