Purification of Group ivb metal halides
    1.
    发明公开
    Purification of Group ivb metal halides 有权
    第ivb族金属卤化物的纯化

    公开(公告)号:EP1329418A3

    公开(公告)日:2003-12-17

    申请号:EP03000652.2

    申请日:2003-01-16

    CPC分类号: C01B9/00 C01B9/02 C01G23/024

    摘要: This invention relates to an improved process for removing trace levels of Group IVb contaminants from a Group IVb metal tetrahalide of and particularly to a process for removing zirconium tetrachloride from titanium tetrachloride. The improvement resides in contacting a titanium tetrachloride feedstock containing trace impurities of zirconium tetrachloride or hafnium tetrachloride with a sufficient amount of titanium hydride to convert any zirconium tetrachloride or hafnium tetrachloride to a lower volatile compound. The resultant mixture is distilled and the titanium tetrachloride separated from the lower volatile zirconium or hafnium compounds.

    摘要翻译: 本发明涉及从IVb族金属四卤化物中除去微量含量的IVb族污染物的改进方法,特别涉及从四氯化钛中除去四氯化锆的方法。 改进在于使含有微量四氯化锆或四氯化铪的微量杂质的四氯化钛原料与足够量的氢化钛接触以将任何四氯化锆或四氯化铪转化为较低挥发性化合物。 将所得混合物蒸馏并从较低挥发性锆或铪化合物中分离出四氯化钛。