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:
Nov. 24, 1998
Filed:
May. 16, 1997
Teh Chung Ho, Bridgewater, NJ (US);
Charles Ralph Symon, Rahway, NJ (US);
Viktor Buchholz, Branchburg, NJ (US);
Michel Daage, Baton Rouge, LA (US);
Exxon Research and Engineering Company, Florham Park, NJ (US);
Abstract
The present invention is directed toward a hydrogenation process using a highly active aromatics hydrogenation catalyst. The catalyst is prepared by decomposing a catalyst precursor selected from the group consisting of metal amine molybdates, metal amine tungstates and mixtures thereof, wherein said metal amine catalyst precursor has the general formula ML (Mo.sub.y W.sub.1-y O.sub.4).sub.a where M is Cr and/or one or more divalent promoter metals selected from the group consisting of Mn, Fe, Co, Ni, Cu and Zn; L is one or more neutral nitrogen-containing ligands at least one of which is a chelating polydentate ligand; 0.ltoreq.y.ltoreq.1; and a=1 for non-chromium containing catalysts and wherein 0.5.ltoreq.a.ltoreq.3 for chromium containing catalysts, at a temperature of about 200.degree. C. to about 400.degree. C. in an inert atmosphere; then reducing at a temperature of about 300.degree. C. to about 450.degree. C. said metal amine catalyst precursor to form a mixed metal oxide catalyst of the formula ML(Mo.sub.y W.sub.1-y O.sub.b).sub.a where M, L and y are as above and b<4. The catalyst as prepared above is used in an aromatics hydrogenation processes.