Naphthalene alkylation with RE and mixed H/NH3 form catalyst

Details Naphthalene alkylation with RE and mixed H/NH3 form catalyst Naphthalene alkylation with RE and mixed H/NH3 form catalyst

1995-08-25

1997-05-13

Caldarola, Glenn A.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

585446, 585467, C07C 264, C07C 266, C07C 15107

Patent

active

056294638

ABSTRACT:
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.

REFERENCES:
patent: 4570027 (1986-02-01), Boucher et al.
patent: 5034563 (1991-07-01), Ashjian et al.
patent: 5457254 (1995-10-01), Ardito et al.

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