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US 5,292,980 AGranted
Base-catalyzed reactions using zeolite catalysts
AssigneeMobil Oil Corporation
InventorRalph M. Dessau
Life of this patent
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Abstract
Basic intermediate or large pore zeolites having a Constraint Index less than 12 are useful as catalysts in the dehydrogenation-aromatization of cyclic dienes, in the isomerization of olefins and in the aldol condensation, and particularly in the cyclization of acetonylacetone to 3-methyl-2-cyclopenten-1-one.
Claims3
A process for catalytically isomerizing olefins comprising contacting an olefin of the formula R--CH.dbd.CH.sub.2, wherein R is an alkyl of 1 to 4 carbon atoms, with a catalyst composition comprising a zeolite,
- wherein the zeolite is ZSM-5 and
- wherein the catalyst composition contains ions of alkali metal or alkaline earth metal, wherein the ions are present in a molar amount which exceeds framework aluminum content of the zeolite, on a molar basis,
- wherein said contacting is undertaken under conditions effective to convert the olefin to an isomer thereof.
Dependencies are inferred from the claim text.