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:
Apr. 24, 1984
Filed:
Mar. 15, 1982
Applicant:
Inventor:
George N Pessimisis, Westchester, IL (US);
Assignee:
Nalco Chemical Company, Oak Brook, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; C10G / ; C10G / ;
U.S. Cl.
CPC ...
502211 ; 2082 / ; 208217 ; 2082 / ; 2082 / ; 502213 ;
Abstract
Hydrotreating catalysts are prepared using multiple impregnation and a critical ratio of VIB metal to VIII metal in one or more stages to produce catalysts which have higher than normal activity in contaminant removal from hydrocarbon feed stocks, especially in both sulfur and nitrogen removal, which catalysts also contain relatively low or no acidic residues such as P.sub.2 O.sub.5 and permit use of lower effective operating temperature for a predetermined percentage of contaminant removal, for example, at 85% removal of sulfur.