Process for preparing a compound of formula RSH by hydrosulfurization
US12162823B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2020 |
| Grant date | Dec 10, 2024 |
| Priority date | — |
| Expiry date | Jun 10, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2523/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for preparing a compound of formula RSH where R represents an alkyl group, by gas-phase catalytic reaction of hydrogen sulfide with a compound of formula ROH, in the presence of a solid catalyst, according to which method the reaction is performed in the presence of a catalyst which includes one or several pure or mixed rare-earth oxide(s), one or several pure or mixed rare-earth sulfide(s), or one or several pure or mixed rare-earth oxysulfide(s). When the rare earth is lanthanum, the catalyst is a mixed oxide of lanthanum and of at least one metal selected from rare earths or not and when the rare earth is cerium, the catalyst is supported on an alumina.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.