Process for presulfurizing a hydrocarbon treatment catalyst
US4983558A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 1989 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | Feb 16, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J37/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a process for treating a new or regenerated catalyst containing a support having as a base at least one metal or metalloid oxide and at least one active metal, comprising treating the catalyst with at least one sulfuration agent dissolved in a solvent. The invention is charcterized in that the sulfuration agent is a polysulfide with the following general formula EQU R'--S.sub.y --R--S.sub.x --R--S.sub.y).sub.n R' where R is a linear or a branched organic radical comprising from 2 to 12 carbon atoms; R' is an alkyl, alkenyl, arylalkyl or arylalkenyl radical comprising from 1 to 12 carbon atoms, R' possibly comprising at least one heteroatom selected from the group consisting of oxygen, nitrogen, and sulfur; x has a value of from 1 to 4; y has a value of from 1 to 8 and n is such that the average molar mass of the polymer is about 5000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.