Indirect catalytic epoxidation with hydrogen peroxide electrogenerated in ionic liquids |
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| Authors: | Kam-Piu Ho Kwok-Yin Wong Tak Hang Chan |
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| Affiliation: | a Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, PR China
b The Institute of Molecular Technology for Drug Synthesis and Discovery, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, PR China |
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| Abstract: | Hydrogen peroxide was generated in room temperature ionic liquids by electrolysis, which was then used for the epoxidation of lipophilic alkenes under a carbon dioxide-saturated environment and in the presence of catalytic amount of manganese salt. 13C NMR showed that the active peroxymonocarbonate (HCO4−) was generated from the mixture of H2O2, CO2, and water in the ionic liquids. Most lipophilic alkenes were selectively epoxidized within 4-5 h. The ionic liquids can be recovered and reused without any deterioration in the performance. |
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| Keywords: | Hydrogen peroxide Oxygen reduction Electrogeneration Manganese/bicarbonate-catalyzed epoxidation Ionic liquids |
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