Desulfurization process for refractory organosulfur heterocycles

US5935420A · kind A · utility

Assignee

• Exxon Research and Engineering Company · US

Inventors

• William C. Baird, Jr. · Baton Rouge, US
• Gary B. McVicker · Califon, US
• James J. Schorfheide · Oak Hill, US
• Darryl P. Klein · Ellicott City, US
• Sylvain Hantzer · Prairieville, US
• Michel Daage · Baton Rouge, US
• Michele S. Touvelle · Baton Rouge, US
• Edward S. Ellis · Berkeley Heights, US
• David E. W. Vaughan · Flemington, US
• Jingguang Chen · Hockessin, US

Key dates

• Filing date: Aug 22, 1997
• Grant date: Aug 10, 1999
• Expiry date: Aug 22, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G45/10
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for the hydrodesulfurization (HDS) of multiple condensed ring heterocyclic organosulfur compounds present in petroleum and petrochemical streams over noble metal-containing catalysts under relatively mild conditions. The noble metal is selected from Pt, Pd, Ir, Rh, and polymetallics thereof. The catalyst system also contains a hydrogen sulfide sorbent material.