Aromatics hydrogenation with a new class of metal oxides
US5767037A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1995 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Aug 18, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G65/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention is directed toward a highly active aromatics hydrogenation catalyst and its use. The catalyst composition is prepared by: PA1 (a) 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 EQU ML(Mo.sub.y W.sub.1-y O.sub.4)a PA1 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. to about 400.degree. C. in an inert atmosphere; and PA1 (b) reducing at a temperature of about 300.degree. to about 450.degree. C. said metal amine catalyst precursor to form a catalyst. The catalyst as prepared above may be used in an aromatics hydrogenation process. The invention is further directed to the use of such catalysts in aromatics hydrogenation processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.