Method of hydrodechlorinating nuclear-chlorinated ortho-xylenes
US7098371B2 · kind B2 · utility
28Cited by
8References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2003 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Jun 25, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2523/44
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Method of hydrodechlorinating nuclear-chlorinated o-xylenes and recovering o-xylene, forming hydrogen chloride, the nuclear-chlorinated o-xylenes being hydrogenated in the gas phase at a noble-metal-containing catalyst at a temperature in the range from 220 to 360° C. The catalyst preferably comprises palladium or platinum, in particular supported palladium or platinum. The nuclear-chlorinated o-xylenes can be used individually or as mixtures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.