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US 2003/0229253 A1Published application
High yield cyclohexyl hydroperoxide decompostition process
AssigneeE. I. Du Pont de Nemours and Company
InventorLudovic Fodor
Life of this patent
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Abstract
Disclosed is a process for cyclohexyl hydroperoxide (CHHP) decomposition using in aqueous alkaline solution in presence of cobalt catalyst.
Claims13
A process for decomposing cyclohexyl-hydroperoxide to cyclohexanol and cyclohexanone, said process comprising:
- (a) washing cyclohexane air oxidizer tails with water;
- (b) separating the phases that result from step (a);
- (c) contacting the water-washed air oxidizer tails with aqueous caustic solution;
- (d) separating the phases that result from step (c);
- (e) contacting the water washed air oxidizer tails organic phase with a catalyst comprising cobalt salt in caustic aqueous solution;
- (f) agitating the two-phase product of step (e);
- (g) separating the phases;
- (h) removing the aqueous caustic phase containing the cobalt;
- (i) washing the organic phase with water;
- (j) optionally, recycling part of the aqueous caustic phase from step (h) back to step (c).
- (k) optionally, recycling the water from previous washing step (l) back to step (a).
8 more elements
A process of claim 5 wherein the concentration of caustic solution is in the range of 7% to about 20%.
Dependencies are inferred from the claim text.