1,1,1,2,3,3,3-heptafluoropropane preparation method
A technology of heptafluoropropane and hexafluoropropene, applied in the field of preparing 1,1,1,2,3,3,3-heptafluoropropane, which can solve the problems of short service life of the catalyst
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0017] Dissolve chromium chloride in deionized water to prepare a 20% mass concentration of chromium chloride solution; add 10% ammonia water dropwise under stirring, keep the reaction temperature at 10°C, and when the pH value of the reaction solution reaches 9.0 , stop the reaction, and stir for another 0.5h to obtain hydrated chromium oxide precipitate, filter, fully wash with deionized water, dry at 105 ° C, pulverize, dry the purchased magnesium oxide, and mix with hydrated chromium oxide evenly, the mass ratio The ratio of 7:3, adding an appropriate amount of water, kneading evenly, discharging and shaping, drying the shaped catalyst at 105 ℃, putting the shaped catalyst into the reaction tube, burning at 350 ℃ for 24 hours in the presence of nitrogen, Activated with HF for 24 hours, after the activation was completed, the temperature was lowered to 270 °C, the feeding amount of hexafluoropropylene was controlled at 180 g / h, the molar ratio of hexafluoropropylene and HF w...
Embodiment 2
[0019] The catalyst was prepared in the same manner as in Example 1, the molar ratio of hexafluoropropylene and HF was controlled at 1.2, and other reaction conditions were the same, the conversion rate of hexafluoropropylene was 54%, and the selectivity of HFC-227ea was 99%.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com