Process for the preparation of a catalyst based on tungsten for use in hydrotreatment or in hydrocracking
US9579642B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2014 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Dec 12, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2529/076
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention concerns a process for the preparation of a catalyst based on tungsten intended for hydrotreatment or hydrocracking processes.The invention concerns a process for the preparation of a catalyst for carrying out hydrogenation reactions in hydrotreatment and hydrocracking processes. Said catalyst is prepared from at least one mononuclear precursor compound based on tungsten (W), in its monomeric or dimeric form, having at least one W═O or W—OR bond or at least one W═S or W—SR bond where [R═CxHy where x≧1 and (x−1)≦y≦(2x+1) or R═Si(OR′)3 or R═Si(R′)3 where R′═Cx′Hy′ where x′≧1 and (x′−1)≦y′≦(2x′+1)], optionally at least one Mo precursor and optionally at least one promoter element from group VIII. Said precursors are deposited onto an oxide support which is suitable for the process in which it is used, said catalyst advantageously being sulphurized before being deployed in said process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.