The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 1987
Filed:
May. 05, 1986
Nelson P Martinez, San Antonio de Los Altos, VE;
Roberto E Galiasso, San Antonio de Los Altos, VE;
Jose R Velasquez, Caracas, VE;
Juan Lujano, Caracas, VE;
Carlos Zerpa, Caracas, VE;
Intevep, S.A., Caracas, VE;
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.