One-pot Baeyer-Villiger oxidation of cyclohexanone with in situ generated hydrogen peroxide over Sn-Beta zeolites  

作　　者：Jianwei Luo Haoran Yuan Hui Liu Jingbo Li Yu Wang Yong Wang Jia Yao Haoran Li 

机构地区：[1]Department of Chemistry,ZJU-NHU United R&D Center,Zhejiang University,Hangzhou,310027,China [2]State Key Laboratory of Chemical Engineering,College of Chemical and Biological Engineering,Zhejiang University,Hangzhou,310027,China [3]Zhejiang NHU Company Ltd.,Xinchang,312500,China

出　　处：《Green Chemical Engineering》2021年第3期294-300,共7页绿色化学工程（英文）

基　　金：supported by the National Natural Science Foundation of China(No.22073081);the Fundamental Research Funds for the Central Universities.

摘　　要：ε-Caprolactone is traditionally produced through Baeyer-Villiger oxidation of cyclohexanone oxidized by peracids in industry,which inevitably results in large discard acid and environmental pollution.To this end,a green route toε-caprolactone was developed by coupling the direct generation of hydrogen peroxide from aerobic oxidation of benzhydrol catalyzed by NHPI and Baeyer-Villiger oxidation of cyclohexanone with the in situ hydrogen peroxide over Sn-Beta zeolites in one pot.Molecular oxygen was employed as the terminal oxidant,and the effects of several reaction factors were studied.Compared with one-step process,the one-pot two-step method noticeably improved the selectivity ofε-caprolactone.When the amount of in situ hydrogen peroxide was 0.72 equivalent,the selectivity ofε-caprolactone was obtained 94.8%with 39.2%conversion of cyclohexanone,and the efficiency of H_(2)O_(2) was up to 51.5%.As compared to the commercial 30 wt%aqueous H_(2)O_(2) added directly,in situ H_(2)O_(2) dramatically improved the selectivity ofε-caprolactone and had higher efficiency.Additionally,the catalyst could be easily separated from the reaction solution and reused several times without the remarkable loss of activity.

关 键 词：Baeyer-Villiger oxidation Ε-CAPROLACTONE Sn-Beta Hydrogen peroxide Molecular oxygen 

分 类 号：TQ235[化学工程—有机化工]