Regeneration of ionic liquid catalyst
AssigneeChevron U.S.A. Inc.
InventorsSaleh Elomari, Thomas V. Harris, William Schinski
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Abstract
A process for regenerating a used ionic liquid catalyst comprising a cationic component and an anionic component, which catalyst has been deactivated by conjunct polymers complexed with the anionic component comprising the steps of adding a reagent which is capable of replacing the complexed conjunct polymer with the cationic component of the catalyst, said reagent being added in an amount sufficient to react with a suitable amount of both free and complexed anionic components in the used catalyst and removing the replaced conjunct polymer to produce a regenerated ionic liquid catalyst is disclosed.
Claims28
A process for regenerating a used ionic liquid catalyst comprising a cationic component and an anionic component which has been deactivated by a complexed conjunct polymer that has complexed with the anionic component, comprising the steps of:
- a. adding a reagent which is capable of replacing the complexed conjunct polymer in the used ionic liquid catalyst with the cationic component of the used ionic liquid catalyst to make a used ionic liquid—reagent mixture , said reagent being added in an amount sufficient to react with a suitable amount of both free (non-complexed) and complexed anionic components in the used ionic liquid catalyst wherein a replaced conjunct polymer is made;
- and
- b. removing the replaced conjunct polymer to produce a regenerated ionic liquid catalyst.
A process for regenerating a used ionic liquid catalyst comprising a cationic component and an anionic component, which has been deactivated by a complexed conjunct polymer that has complexed with the anionic component, comprising adding a reagent which is capable of replacing the complexed conjunct polymer with the cationic component of the used ionic liquid catalyst to make a used ionic liquid—reagent mixture, said reagent being added in an amount sufficient to increase the activity of the used ionic liquid catalyst;
- wherein a regenerated catalyst is made.
A process for regenerating a used acidic ionic liquid catalyst which has been deactivated by a complexed conjunct polymer, comprising:
- adding a reagent which is capable of replacing the complexed conjunct polymer with a cationic component of the used acidic ionic liquid catalyst to make a used acidic ionic liquid-reagent mixture, said reagent being added in an amount sufficient to increase the activity of the used acidic ionic liquid catalyst;
- wherein a regenerated catalyst is made;
- and wherein the used acidic ionic liquid catalyst has been used to catalyze an alkylation of an isoparaffin with an olefin.
Dependencies are inferred from the claim text.