申请人:Occidental Chemical Corporation
公开号:US04990674A1
公开(公告)日:1991-02-05
Disclosed is a method of making an aliphatic aromatic phosphine oxide by reacting an aliphatic aromatic phosphinic acid with a halogenating agent to produce a phosphoryl halide, reducing the phosphoryl halide to a phosphinous halide, hydrolyzing the phosphinous halide with water to produce a mixture of a phosphine and a phosphine oxide, determining how much phosphine is present in said mixture, and adding sufficient oxidizing agent to oxidize the phosphine in the mixture to the corresponding phosphine oxide. Octylphenyl phosphine oxide is preferred. The phosphine oxides are useful in making extractants for extracting actimides and lanthanides.
本发明公开了一种制备脂肪族芳香膦氧化物的方法,包括将脂肪族芳香膦酸与卤化剂反应以产生磷酰卤、将磷酰卤还原为膦卤、用水水解膦卤以产生膦和膦氧化物的混合物、确定所述混合物中膦的含量,并加入足够的氧化剂将混合物中的膦氧化为相应的膦氧化物。优选辛基苯基膦氧化物。这些膦氧化物在制备提取剂用于提取锕系元素和镧系元素时具有用途。