Process for reprocessing sulfuric acid from phosphorous purifica

Details Process for reprocessing sulfuric acid from phosphorous purifica Process for reprocessing sulfuric acid from phosphorous purifica

1990-07-25

1992-06-16

Straub, Gary P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423322, 423323, 423531, C01B 1744, C01B 1790, C01B 2501

Patent

active

051223597

ABSTRACT:
A process for reprocessing sulfuric acid obtained in the purification of yellow phosphorous, which comprises mixing the contaminated sulfuric acid with hydrogen peroxide and reacting this mixture in a vessel containing hot concentrated sulfuric acid at 110.degree. to 210.degree. C. in the presence of FeSO.sub.4, MnSO.sub.4 or NiSO.sub.4 as a catalyst is described.

REFERENCES:
patent: 2255421 (1941-09-01), Groll et al.
patent: 3780164 (1973-12-01), Muller et al.
patent: 5026535 (1991-06-01), Jonsson et al.

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