Patent ID: 7727925
Filing Date: 2010-06-01
Classification: B01J,C07C,Y02P

Abstract:
1. A process for regenerating a used acidic ionic liquid catalyst which has been deactivated by conjunct polymers through use, comprising: a. removing the used acidic ionic liquid catalyst from a reaction zone in which said catalyst was used; b. combining at least a portion of the used acidic ionic liquid catalyst, a metal and a Broensted acid in a regeneration zone under conditions and for a time sufficient to convert the conjunct polymers into an extractable phase; c. removing a reaction product from the regeneration zone; d. mixing the removed reaction product with a hydrocarbon solvent in which the conjunct polymers are soluble; e. allowing the mixture from step (d) to separate into two phases, a lighter phase which contains the conjunct polymers and a heavier phase which contains a regenerated ionic liquid catalyst; and f. recovering at least a portion of the heavier phase that is a regenerated acidic ionic liquid catalyst.