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Process for separating zero-valent nickel species from divalent nickel species

  • US 4,387,056 A
  • Filed: 04/16/1981
  • Issued: 06/07/1983
  • Est. Priority Date: 04/16/1981
  • Status: Expired due to Fees
First Claim
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1. A process for separating zero-valent nickel species from divalent nickel species each in a solution of predominantly an organic phosphorus compound along with minor amounts of mononitriles and less than 10% by weight of dinitriles based upon the weight of said solution which comprises contacting said solution with a solvent selected from the class consisting of hydrocarbons having 5-9 carbon atoms, halohydrocarbons having 1-3 carbon atoms, nitriles having 2-5 carbon atoms and mixtures of the foregoing in an amount sufficient to form a precipitate and a single liquid phase and thereafter separating the precipitate from the liquid.

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