Method of defluorinating phosphoric acid

Details Method of defluorinating phosphoric acid Method of defluorinating phosphoric acid

1975-08-11

1977-12-27

Thomas, Earl C.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423321R, C01B 2516

Patent

active

040655474

ABSTRACT:
A method for the removal of fluorine compounds from admixture with phosphoric acid in which the mixture in organic solvent is contacted with an aqueous solution of a compound of Al, Fe, Ti or Zr whereby the phosphoric acid remains in the organic solvent phase while the fluorine compounds are extracted in the aqueous phase, and then regenerating the organic solvent phase with water to remove phosphoric acid from the solvent phase.

REFERENCES:
patent: 3361527 (1968-01-01), Hinkebein et al.
patent: 3410656 (1968-11-01), Bunin et al.
patent: 3458282 (1969-07-01), Koerner et al.
patent: 3479139 (1969-11-01), Koerner et al.
patent: 3607029 (1971-09-01), Goret et al.
patent: 3867511 (1975-02-01), Chiang et al.

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