Regeneration of ionic liquid catalyst by hydrogenation using a supported catalyst
AssigneeChevron U.S.A. Inc.
InventorsThomas V. Harris, Saleh Elomari
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Abstract
A process for regenerating a used acidic ionic liquid catalyst comprising the steps of contacting the used ionic liquid catalyst and hydrogen with a supported hydrogenation catalyst comprising a hydrogenation component on a support in a reaction zone under hydrogenation conditions for a time sufficient to increase the activity of the used catalyst is disclosed.
Claims23
A process for regenerating a used acidic ionic liquid catalyst which has been deactivated, comprising:
- contacting the used acidic ionic liquid catalyst and hydrogen with a supported hydrogenation catalyst comprising a hydrogenation component on a support in a reaction zone under hydrogenation conditions for a time sufficient to increase the activity of the used acidic ionic liquid catalyst for paraffin alkylation.
A process for regenerating a used acidic ionic liquid catalyst which has been deactivated by a conjunct polymer, comprising:
- contacting the used acidic ionic liquid catalyst which has been deactivated by the conjunct polymer and hydrogen with a supported hydrogenation catalyst comprising a hydrogenation component on a support in a reaction zone under hydrogenation conditions, in the presence of an inert hydrocarbon in which saturated conjunct polymers are soluble, for a time sufficient to hydrogenate at least a portion of the conjunct polymer and to increase the activity of the used acidic ionic liquid catalyst for paraffin alkylation.
A process for regenerating a catalyst, comprising:
- a. placing a used acidic ionic liquid catalyst in a reactor, wherein the used acidic ionic liquid catalyst has been used for an alkylation and has been deactivated by a conjunct polymer;
- and
- b. contacting the used acidic ionic liquid catalyst and hydrogen with a supported hydrogenation catalyst in the reactor to form a hydrogenated conjunct polymer;
- and
- c. removing the hydrogenated conjunct polymer from the used acidic ionic liquid catalyst.
Dependencies are inferred from the claim text.