Regenerating perosmate catalyst

Details Regenerating perosmate catalyst Regenerating perosmate catalyst

1979-12-28

1981-07-28

Konopka, P. E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252414, 568860, 260429R, B01J 3140, B01J 2396, C07C 2903, C07C 2716

Patent

active

042809240

ABSTRACT:
A catalyst residue containing osmium catalyst having a substantial component with a valency state less than +5 is regenerated to a valency state greater than +5 by contacting the residue with an organic hydroperoxide at a pH greater than 7 and the regenerated catalyst residue is recycled to a hydroxylation reactor containing ethylene or propylene, a polar organic solvent, an aqueous solution of cesium, rubidium, potassium or tetraalkylammonium hydroxide and an organic hydroperoxide.

REFERENCES:
patent: 3317592 (1967-05-01), MacLean et al.
patent: 4049724 (1977-09-01), Sheng et al.
patent: 4217291 (1980-08-01), Wu et al.

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