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US 5,157,197 AGranted
Isoparaffin alkylation using a lewis acid promoted transition alumina catalyst
AssigneeCatalytica, Inc.
InventorsMichael D. Cooper, David L. King, William A. Sanderson
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Abstract
This invention is a process for the alkylation of isoparaffin with olefins using a catalyst system comprising certain transition aluminas promoted with a Lewis acid (preferably BF.sub.3), and free Lewis acid. The product alkylate is a complex mixture of branched paraffins suitable for use as a high octane blending component for motor fuels.
Claims20
An alkylation process comprising the steps of:
- a. contacting a mixture comprising isoparaffins and n-olefins with an acidic alkylation catalyst system comprising a transition alumina which has been previously contacted under substantially anhydrous conditions with a Lewis acid and with free Lewis acid under alkylation conditions to produce an alkylate stream, and
- b. separating the alkylate stream from the acidic alumina based alkylation catalyst.
Dependencies are inferred from the claim text.