Naphthalene alkylation with RE and mixed H/NH3 form catalyst

US5629463A · 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: Aug 25, 1995
• Grant date: May 13, 1997
• Expiry date: Aug 25, 2015

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 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.