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    • 63. 发明申请
    • AMMONIA RECOVERY IN THE PREPARATION OF SILAZANES AND POLYSILAZANES
    • 阿姆逊恢复硅藻土和多晶硅的制备
    • WO2004035475A1
    • 2004-04-29
    • PCT/US2003/032766
    • 2003-10-15
    • KION CORPORATION
    • KNASIAK, Gary, J.
    • C01C1/00
    • C01C1/026C07F7/10C08G77/62
    • Silazanes and/or polysilazanes are prepared by ammonolysis reaction in liquid anhydrous ammonia by introducing at least one halosilane into the ammonia. In addition to the silazane and/or polysilazane, an ammonolysis by-product also results. A substantially more efficient process is disclosed for treating the by-product through the addition of a liquid, namely water, or a solution comprising a strong base, or an aqueous acid solution. The process may be employed for more efficient, economical recovery of ammonia from such waste stream solutions of ammonia halide, or acids thereof for use as recycle in the further production of silazanes and polysilazanes, and/or for producing a less hazardous, more readily disposable salt residue thereof.
    • 硅烷和/或聚硅氮烷通过在液体无水氨中通过将至少一种卤代硅烷引入氨中的氨解反应制备。 除了硅氮烷和/或聚硅氮烷之外,还产生了氨解副产物。 公开了通过添加液体即水或包含强碱或酸性水溶液的溶液来处理副产物的实质上更有效的方法。 该方法可用于从氨卤化物或其酸的废物流溶液中更有效,经济地回收氨,以用作进一步生产硅氮烷和聚硅氮烷中的循环,和/或用于生产较少危险性,更容易一次性的 其盐残基。