Application of 12CaO鈥?Al₂O₃ electride as a new electrode for superoxide ion generation and hydroxylation of an arylboronic acid

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• 作者：Jiang Li^a ; ^{j-li@lucid.msl.titech.ac.jp} ; Bin Yin^a ; Toshio Fuchigami^b ; Shinsuke Inagi^b ; Hideo Hosono^a ; Setsuro Ito^a ; ^c
• 关键词：Mayenite ; Cyclic voltammetry ; Cathodic reduction ; Iodometry
• 刊名：Electrochemistry Communications
• 出版年：2012
• 期刊代码：29_13882481
• 类别：ch
• 出版时间：April, 2012
• 卷：17
• 期：Complete
• 页码：52-55
• 文件大小：386 K

摘要

12CaO鈥?Al₂O₃ (C12A7) electride, which exhibits metallic conduction and 2.4 eV work function, can be used as an electron emitter and chemical reagent. Herein we reveal a new application for C12A7 electride as electrode in electrochemical reactions. Cathodic reduction of oxygen at C12A7 electrode in acetonitrile generates superoxide ions (O₂^鈥⑩垝) using Bu₄NClO₄ as a supporting electrolyte. Iodometry reveals that this electrode shows a higher yield of O₂^鈥⑩垝 ions than conventional electrodes such as Pt and glassy carbon. Moreover, O₂^{鈥⑩€?/sup> ion-induced hydroxylation of p-(methylthio)phenylboronic acid using C12A7 electrode gives the corresponding phenol derivative with a yield of 90%at the charge apply of 2.5 F路mol鈭?#xA0;1.}