公开(公告)号：US20090068081A1

公开(公告)日：2009-03-12

申请号：US12204169

申请日：2008-09-04

申请人： Katsuhiro UEHARA ,  Tohru Kubota ,  Mitsuyoshi Osima

发明人： Katsuhiro UEHARA ,  Tohru Kubota ,  Mitsuyoshi Osima

IPC分类号： C01B33/107

CPC分类号： C01B33/10778

摘要： This method for purifying chlorosilanes includes: introducing oxygen (O2) into the chlorosilanes containing a boron impurity and a phosphorous impurity in the presence of an aromatic aldehyde; treating the chlorosilanes to convert the impurities into high boiling compounds at the same time; and subjecting the chlorosilanes after having been treated to a distillation process or the like to separate the high boiling compounds of boron and phosphorous from the chlorosilanes. The high boiling compounds produced through the above described treatment are not decomposed into low boiling compounds by the heat applied after the high boiling compounds having been produced, so that the high boiling compounds can be easily separated from the chlorosilanes through treatment such as distillation. Accordingly, the boron impurity and the phosphorous impurity can be removed with a single process.

摘要翻译： 这种氯硅烷的净化方法包括：在芳香醛存在下，将含氧（O 2）导入含有硼杂质的氯硅烷和磷杂质中; 处理氯硅烷同时将杂质转化成高沸点化合物; 将经过处理后的氯硅烷进行蒸馏处理等，从硼硅烷中分离高沸点硼和磷化合物。 通过上述处理生产的高沸点化合物在生产高沸点化合物之后不会分解成低沸点化合物，从而通过诸如蒸馏的处理可以容易地将高沸点化合物与氯硅烷分离。 因此，可以通过单一工艺去除硼杂质和磷杂质。