Multiple molecular sieve catalyst for sour service dewaxing

US8030240B2 · kind B2 · utility

Assignee

• EXXONMOBIL RESEARCH AND ENGINEERING COMPANY · US

Inventors

• Christine N. Elia · Bound Brook, US
• Mohan Kalyanaraman · Media, US
• Lei Zhang · Beijing, CN
• Michel Daage · Baton Rouge, US
• Darden Sinclair · Beaumont, US
• Valery Sokolovskii · Santa Clara, US
• David M. Lowe · Sunnyvale, US
• Jun Han · Daejeon, KR
• Nicholas Ohler · San Leandro, US
• Daniel Giaquinta · Saratoga, US
• Anthony F. Volpe, Jr. · Sunnyvale, US

Key dates

• Filing date: Dec 18, 2008
• Grant date: Oct 4, 2011
• Expiry date: Jul 1, 2029

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2229/42
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Catalysts for dewaxing of hydrocarbon feeds, particularly feeds with elevated sulfur and nitrogen levels, are provided. The dewaxing catalysts include at least two zeolites, including a zeolite with a low silica to alumina ratio. The catalysts may be combined with a low surface binder, or alternatively the catalysts as formulated may have a high ratio of zeolite surface area to external surface area.