环氧丙烷
阳极
电解
电合成
溴化物
电化学
选择性
材料科学
氧化物
电解质
化学工程
无机化学
电极
化学
有机化学
催化作用
环氧乙烷
共聚物
物理化学
工程类
聚合物
复合材料
冶金
作者
Mingfang Chi,Jingwen Ke,Yan Liu,Miaojin Wei,Hongliang Li,Jiankang Zhao,Yuxuan Zhou,Zhenhua Gu,Zhigang Geng,Jie Zeng
标识
DOI:10.1038/s41467-024-48070-1
摘要
Abstract The electrochemical synthesis of propylene oxide is far from practical application due to the limited performance (including activity, stability, and selectivity). In this work, we spatially decouple the bromide-mediated process to avoid direct contact between the anode and propylene, where bromine is generated at the anode and then transferred into an independent reactor to react with propylene. This strategy effectively prevents the side reactions and eliminates the interference to stability caused by massive alkene input and vigorously stirred electrolytes. As expected, the selectivity for propylene oxide reaches above 99.9% with a remarkable Faradaic efficiency of 91% and stability of 750-h (>30 days). When the electrode area is scaled up to 25 cm 2 , 262 g of pure propylene oxide is obtained after 50-h continuous electrolysis at 6.25 A. These findings demonstrate that the electrochemical bromohydrin route represents a viable alternative for the manufacture of epoxides.
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