Method for producing phosphorus pentafluoride
US11511993B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2018 |
| Grant date | Nov 29, 2022 |
| Priority date | — |
| Expiry date | May 21, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed is a method for producing phosphorus pentafluoride, including mixing and reacting phosphorus trichloride and chlorine with a large excess of anhydrous hydrogen fluoride liquid, thereby producing phosphorus pentafluoride, wherein heat of reaction generated through the production of phosphorus pentafluoride is removed with latent heat of evaporation of hydrogen fluoride. It is preferable that the anhydrous hydrogen fluoride liquid is circulated, and, in this state, phosphorus trichloride and chlorine are mixed with the anhydrous hydrogen fluoride liquid. Furthermore, it is also preferable that the anhydrous hydrogen fluoride liquid is circulated along a circulation path, or that the anhydrous hydrogen fluoride liquid is circulated through stirring in a reaction vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.