Method for preparing alkyl hydrogeno halosilanes (ahhs) by catalytic hydrogenation
US6384257B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2001 |
| Grant date | May 7, 2002 |
| Priority date | — |
| Expiry date | Sep 26, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/128
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention concerns the upgrading of a by-product of direct synthesis, namely MeSiCl3, by vapor phase catalytic hydrogenation of said by-product to obtain MeHSiCl2 with greater added value. The invention concerns a method for preparing MeHSiCl2 by catalytic hydrogenation of MeSiCl3 in the presence of a metal catalyst with high selectivity levels in MeHSiCl2 economically and without having recourse to drastic and industrially unsuitable conditions. The invention uses a catalyst comprising a bimetal ruthenium/tin catalytic agent. Said catalytic agent is obtained by reacting ruthenium chloride and tin chloride in an acid medium. In practice, the catalyst is formed by a silica powder support impregnated by the ruthenium/tin catalytic agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.