Application of the SPE method to organic electrochemistry—VII. The reduction of nitrobenzene on a modified Pt-nafion

✍ Scribed by Zempachi Ogumi; Minoru Inaba; Shin-ichi Ohashi; Masaaki Uchida; Zen-ichiro Takehara

• Publisher: Elsevier Science
• Year: 1988
• Tongue: English
• Weight: 443 KB
• Volume: 33
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(88)85030-8

✦ Synopsis

SPE composite electrodes prepared by deposition of platinum on N&ion, Pt-Nafions, were modified by electrochemical deposition of nickel and copper. The modified electrodes were applied to the reduction of nitrobenzene. The modification was very effective for aniline formation and suppressed side reactions such as hydrogen evolution. On Cu. Pt-Nafion the Bamberger's rearrangement was inhibited and no p-aminophenol was obtained. The inhibition wascaused by Nafion which coated the active site on Cu, Pt-Nafion. It was suggested that SPE composite electrodes behaved in the same manner as polymer coated electrodes. The active site for charge transfer reaction was concluded to be at an interior surface of the metal layer bound to Nafion.