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. 09, 1994
Filed:
Mar. 11, 1993
Clyde L Aldridge, Baton Rouge, LA (US);
Kenneth L Riley, Baton Rouge, LA (US);
Exxon Research and Engineering Company, Florham Park, NJ (US);
Abstract
A method for the preparation of catalysts for heteroatom removal, particularly sulfur, from petroleum and synthetic fuel feedstocks. The catalyst is comprised of at least one Group VIII metal, and at least one Group VI metal, on a refractory support. The present method for preparing said catalysts comprises impregnating the Group VIII metal onto the refractory support by use of a Group VIII metal salt of an acid, and impregnating the Group VI metal onto the support by way of a Group VI heteropolyacid, wherein the acid comprising the salt of the Group VIII metal is less acidic than the heteropolyacid. The catalysts are then subjected to a heat treatment which includes a first phase wherein the catalyst is dried of free water and a second phase wherein the catalyst is heated to a temperature up to about 300.degree. C. at a heating rate from about 0.15.degree. C./min to about 15.degree. C./min.