Naphthalene alkylation process using mixed H/NH3 form catalyst

US5457254A · kind A · utility

Assignee

• Mobil Oil Corporation · US

Inventors

• Susan Ardito · Waretown, US
• Henry Ashjian · Wantage, US
• Thomas F. Degnan · Yardley, US
• Terry E. Helton · Conroe, US
• Quang N. Le · Cherry Hill, US
• Augusto Rodolfo Quinones · Amstelveen, NL

Key dates

• Filing date: Dec 27, 1993
• Grant date: Oct 10, 1995
• Expiry date: Dec 27, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2529/08
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

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 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 both ammonium and protonic species increases selectivity for production of long chain mono-alkyl substituted naphthalenes in preference to more highly substituted products.