Chemistry of inorganic compounds – Phosphorus or compound thereof
Patent
1974-03-18
1976-05-11
Vertiz, Oscar R.
Chemistry of inorganic compounds
Phosphorus or compound thereof
423305, 423307, 423317, C01B 2500
Patent
active
039564622
ABSTRACT:
Waste material consisting substantially of contaminated phosphorous acid is utilized. To this end, the phosphorous acid is introduced, with agitation into a liquid phase. Liquid phase and phosphorous acid are maintained in a ratio by volume between 1:1 and 10:1. The liquid phase is placed in a reactor, maintained between 250.degree. and 400.degree.C and selected from a phosphoric acid of the general formula H.sub.n.sub.+2 P.sub.n O.sub.3n.sub.+1, in which n substantially stands for a number between 1 and 5. Resulting hydrogen phosphide is removed. In the event of continuous operation, newly formed liquid phase is removed from the reactor, at the same rate as it is being formed.
REFERENCES:
patent: 3116109 (1963-12-01), Cummins
Heymer Gero
Scheibitz Wolfgang
Spott Hasso
Heller Gregory A.
Hoechst Aktiengesellschaft
Vertiz Oscar R.
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