Yeda Research and Develpment & Co. Ltd

Dan Fraenkel

Moshe Levy

Margaret Cherniavsky

Baruch Ittah

A method of selective beta-alkylation of aromatic substrates such as naphthalene or a derivative thereof, comprising reacting the substrate with an alcohol or olefin alkylating agent in the presence of a catalyst selected from the group consisting of a crystallized borosilicate glass zeolite and a crystalline alumina-silica catalyst, said catalyst being at least 86% beta selective with respect to the alkylation of naphthalene by the alkylating agent.

Catalysts and process for the production of hydrocarbons and

Crystallized borosilicate glass zeolites prepared from a PYREX/template reaction system exhibit high para-selective and beta-selective catalytic activity in the respective alkylations of benzene, naphthalene, and derivatives thereof. A PYREX/tetraalkylammonium hydroxide system for alkylation of toluene with C.sub.1 -C.sub.3 -alkanols is exemplary.

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Rehovot, Israel

Dan Fraenkel