Method of preparation of mild hydrocracking catalyst for the production of middle distillates

US4689314A · kind A · utility

Assignee

• Intevep, S.A. · VE

Inventors

• Nelson P. Martinez · San Antonio de los Altos, VE
• Roberto Galiasso · Miranda, VE
• Jose R. Velasquez · Los Teques, VE
• Juan Lujano · Caracas, VE
• Carlos Zerpa · Caracas, VE

Key dates

• Filing date: May 5, 1986
• Grant date: Aug 25, 1987
• Expiry date: May 5, 2006

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J21/12
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A catalyst having a surface concentration as measured by X-Ray Photoelectronic Spectroscopy (XPS) gives values of the Group VIB metal Xs/(Al+X)s of between 4 to 15 where X equals the Group VIB metal and a bulk concentration of between 2.0 to 15.0 wt. % of said Group VIB metal, a surface concentration as measured by X-Ray Photoelectronic Spectroscopy (XPS) gives values of the Group VIII metal Ys/(Al+Y)s of between 2 to 5 where Y equals the Group VIII metal and a bulk concentration of between 1.0 to 4 wt. % of said Group VIII metal, a surface concentration as measured by X-Ray Photoelectronic Spectroscopy (XPS) gives values of phosphorus Ps/(Al+P)s of between 0.1 to 8 and a bulk concentration of between 0.4 to 2 wt. % phosphorus and a surface concentration as measured by X-Ray Photoelectronic Spectroscopy (XPS) gives values of silica SiO.sub.2 /(Al+SiO.sub.2) of between 1 to 10 and a bulk concentration of between 0.1 to 5 wt. % silica and method for preparation of same.