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AssigneeMobil Oil Corporation
InventorsSusan C. Ardito, Henry Ashjian, Thomas F. Degnan, Terry E. Helton, Quang N. Le, Augusto R. Quinones
Estimating the term…
Long chain alkyl substituted naphthalenes are produced by alkylating naphthalene with an olefin or other alkylating agent with at least 6, and usually 12 to 20 carbon atoms, in the presence of an alkylation catalyst comprising a zeolite having rare earth cations, and both ammonium and protonic species, associated with the exchangeable sites of the zeolite. The zeolite is usually a large pore size zeolite such as USY. The presence of rare earths and both ammonium and protonic species increases selectivity for production of long chain mono-alkyl substituted naphthalenes in preference to more highly substituted products.
A process for preparing long chain alkyl substituted naphthalenes which comprises:
A process for preparing long chain alkyl substituted naphthalenes comprising alkylating naphthalene with an olefin containing at least 8 carbon atoms under alkylation reaction conditions in the presence of an alkylation catalyst comprising an ultrastable Y zeolite with exchangeable sites containing both ammonium and protonic species at a molar ratio of ammonium:protonic species from 65:35 to 35:65, and wherein the zeolite is 20 to 40% Rare Earth exchanged, to form an alkylated naphthalene.
Dependencies are inferred from the claim text.