METHOD FOR PRODUCING DIFLUOROPHOSPHATE
    9.
    发明公开
    METHOD FOR PRODUCING DIFLUOROPHOSPHATE 有权
    VERFAHREN ZUR HERSTELLUNG VON DIFLUORPHOSPHAT

    公开(公告)号:EP2939978A1

    公开(公告)日:2015-11-04

    申请号:EP14808166.4

    申请日:2014-06-06

    摘要: Provided is a method for producing a difluorophosphate, which can easily and industrially advantageously produce a high-purity difluorophosphate . The method includes a step of producing a difluorophosphate in the fluorophosphoric acid solution by reacting hydrofluoric acid anhydride containing no solvent with an oxoacid and/or the like of phosphorous to produce a fluorophosphoric acid solution; a step of adding a hexafluorophosphate to the fluorophosphoric acid solution in the absence of respective halides, carbonates, borates, phosphates, hydroxides, and oxides of an alkali metal and the like; and a step of heating and drying the fluorophosphoric acid solution containing the difluorophosphate to distill away a fluorophosphoric acid, or a step of depositing the difluorophosphate in the fluorophosphoric acid solution by crystallization, subsequently separating the difluorophosphate by solid-liquid separation, and distilling away a fluorophosphoric acid contained in the difluorophosphate after the solid-liquid separation.

    摘要翻译: 本发明提供一种二氟磷酸盐的制造方法,其可以容易且在工业上有利地生产高纯度的二氟磷酸盐。 该方法包括通过使不含溶剂的氢氟酸与含磷酸和/或类似物质的磷反应制备氟磷酸溶液中的二氟磷酸盐以产生氟磷酸溶液的步骤; 在不存在各种卤化物,碳酸盐,硼酸盐,磷酸盐,氢氧化物和碱金属的氧化物等的情况下,向氟磷酸溶液中加入六氟磷酸盐的步骤; 以及将含有二氟磷酸盐的含氟磷酸溶液加热干燥以蒸馏掉氟磷酸的步骤,或通过结晶将氟磷酸溶液中的二氟磷酸盐沉积的步骤,随后通过固液分离分离二氟磷酸盐,并蒸馏除去 在固液分离后二氟磷酸盐中含有的氟磷酸。