A Novel Vapor‐Phase Ssynthetic Route for Fluoromethane toward Highly Efficient Industrial Production. Issue 2 (11th January 2019)

• Record Type: Journal Article
• Authors: Yang, Gang; Zhang, Chengping; Yang, Hui‐e; Quan, Hengdao
• Is Part Of: ChemistrySelect. Volume 4:Issue 2(2019)
• Page Start: 527
• Page End: 530
• Publication Date: 2019-01-11
• Subjects: Aluminum fluoride -- Catalyst -- Dimethyl carbonate -- Fluorination -- Fluoromethane.; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201802562
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: The preparation of CH3 F via vapor phase catalytic fluorination of CH3 OCH3 promoted by AlF3 (H‐AlF3, M‐AlF3, L‐AlF3 ) with different surface areas was investigated, with the reaction occurring as follows: CH3 OCH3 +2 HF → 2CH3 F + H2 O. It was found that H‐AlF3 exhibited the highest catalytic activity with high stability among the three types of AlF3 tested in the 100‐h life‐span test, which can be attributed to the massive amount of amorphous AlF3 in H‐AlF3 . H‐AlF3 contains the highest amount of acid and largest surface area among the AlF3 species. The synthetic route of CH3 F showed higher conversion of raw material and better selectivity for CH3 F than traditional routes. Abstract : Fluoromethane was prepared via the vapor‐phase catalytic fluorination of CH3 OCH3 by AlF3 catalyst. It was found that the amorphous AlF3 owned better activity than γ‐AlF3 or ɑ‐AlF3 .