Naphthalene alkylation process

Details Naphthalene alkylation process Naphthalene alkylation process

1990-04-06

1991-07-23

McFarlane, Anthony

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

585467, C07C 264, C07C 268

Patent

active

050345630

ABSTRACT:
Long chain alkyl substituted naphthalenes are produced by the alkylation of naphthalene with an olefin or other alkylating agent possessing at least 6 carbon atoms, usually 12 to 20 carbon atoms, in the presence of an alkylation catalyst comprising a zeolite which contains cations having a radius of at least 2.5 .ANG.. Cations of this size may be provided by hydrated cations such as hydrated ammonium, sodium or potassium cations or by organoammonium cations such as tetraalkylammonium cations. The zeolite is usually a large pore size ze USY. The presence of the bulky cations in the zeolite increases the selectivity of the catalyst for the production of long chain mono-alkyl substituted naphthalenes in preference to more highly substituted products.

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patent: 4570027 (1986-02-01), Boucher et al.
patent: 4604491 (1986-08-01), Dressler et al.
patent: 4714794 (1987-12-01), Yoshida et al.
patent: 4876408 (1989-10-01), Ratcliffe et al.
"An Introduction to Zeolite Molecular Sieves", Dyer, John Wiley and Sons, Ltd., 1988, ISBN 0471919810, pp. 121-122.

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