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US 7,678,727 B2Granted
Regeneration of ionic catalyst by hydrogenation using a homogeneous catalyst
AssigneeChevron U.S.A. Inc.
InventorsThomas V. Harris, Saleh Elomari
Life of this patent
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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 homogeneous hydrogenation catalyst 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 homogeneous hydrogenation catalyst 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 homogeneous hydrogenation catalyst 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.
A process for regenerating a catalyst, comprising:
- contacting a used ionic liquid catalyst that has been deactivated by a conjunct polymer with a homogeneous hydrogenation catalyst in a reaction zone under a hydrogenation condition sufficient to increase the activity of the used ionic liquid catalyst.
Dependencies are inferred from the claim text.