Wax hydroisomerization process

US6383366B1 · kind B1 · utility

Assignee

• Exxon Research and Engineering Company · US

Inventors

• Kenneth L. Riley · Baton Rouge, US
• William J. Murphy · Baton Rouge, US
• Ian A. Cody · Baton Rouge, US
• Stuart L. Soled · Pittstown, US
• Gary B. McVicker · Califon, US
• Sabato Miseo · Pittstown, US

Key dates

• Filing date: Nov 14, 2000
• Grant date: May 7, 2002
• Expiry date: Nov 14, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G2400/10
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Waxy feeds are treated under hydroisomerization conditions to produce good yields of an isomerate product of high VI by using a silica-alumina based catalyst in which the silica-alumina has a pore volume less of 0.99 ml/gm (H2O), an alumina content in the range of 35 to 55 wt % and an isoelectric point in the range of 4.5 to 6.5. A lube fraction of the isomerate is dewaxed to provide a lube basestock of high VI. The silica-alumina may be modified with a rare earth oxide or yttria or boria or magnesia in which instance the modified catalyst has an isoelectric point greater than but no more than 2 points greater than base the silica-alumina.