Activation and regeneration of fluorination catalysts, and fluorination process
US10166538B2 · kind B2 · utility
0Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2014 |
| Grant date | Jan 1, 2019 |
| Priority date | — |
| Expiry date | Jan 20, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fluorination catalyst such as a chromium oxide-based fluorination catalyst may be activated or reactivated by contacting the catalyst. with a source of reactive fluorine, for example nitrogen trifluoride (NF3) or fluorine (F2). Fluorinated compounds may be prepared by the gas phase reaction of hydrogen fluoride (HF) with various substrates such as chlorinated compounds. A number of metal oxide-based catalysts have been developed for this purpose.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.