Chemistry of inorganic compounds – Halogen or compound thereof – Hydrogen halide
Patent
1976-07-08
1978-01-10
Cooper, Jack
Chemistry of inorganic compounds
Halogen or compound thereof
Hydrogen halide
423185, 423339, 423341, 423356, 423312, 423472, 423490, 423551, C01B 722
Patent
active
040679578
ABSTRACT:
Potassium fluoride and silica are reacted with an aqueous solution of hydrofluorosilicic acid. The resulting potassium fluorosilicate is recovered. The potassium fluorosilicate may be further reacted with ammonia in water to form an aqueous mixture of ammonium fluoride and potassium fluoride. The ammonium fluoride is then heated in aqueous solution in the presence of excess potassium fluoride to release ammonia and to form potassium bifluoride. The potassium bifluoride is recovered from solution substantially free from ammonia and heated to release hydrogen fluoride. Alternatively, the recovered potassium bifluoride may be reacted with sodium fluoride to produce sodium bifluoride. The sodium bifluoride is then heated to release hydrogen fluoride.
REFERENCES:
patent: 2853363 (1958-09-01), Sidun et al.
patent: 3195979 (1965-07-01), Burkert et al.
patent: 3238017 (1966-03-01), Yamaguchi et al.
patent: 3323864 (1967-06-01), Lapple
patent: 3420623 (1969-01-01), Barker
patent: 3793436 (1974-02-01), Hartig
patent: 3966877 (1976-06-01), Kalach et al.
O'Neill Padraic Seamus
Worthington Ralph Eric
Cooper Jack
Fitzwilton Limited
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