Gas-phase catalytic fluorination with chromium catalysts
US10577294B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Dec 7, 2016 |
| Grant date | Mar 3, 2020 |
| Priority date | — |
| Expiry date | Dec 7, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a method for fluorinating a chlorinated compound including the steps of (a) placing said chlorinated compound in contact with gaseous hydrogen fluoride within a reactor and in the presence of a fluorination catalyst to produce a fluorinated compound, and (b) regenerating the fluorination catalyst used in step a), the step of regenerating the fluorination catalyst including (c) treating said fluorination catalyst with an oxidizing agent to form an oxidized fluorination catalyst, and (d) treating the oxidized fluorination catalyst obtained in step (c) with a gas mixture including a reducing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.