Investigation of reaction mechanism of electrochemical hydrogen evolution using M3S2 cluster under pressurized CO2

2016 Fiscal Year Final Research Report

• Project/Area Number: 26410071
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Inorganic chemistry
• Research Institution: Kyoto University
• Principal Investigator: Kobayashi Katsuaki 京都大学, 物質－細胞統合システム拠点, 特定助教 (30433874)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 錯体化学 / 電気化学 / CO2還元 / 水素発生

Outline of Final Research Achievements

In order to decrease the activation energy of electrochemical hydrogen evolution, novel metal complex catalysts were developed from the viewpoint of reaction mechanism. M3S2 clusters catalyzed the electrochemical reduction of water through the formation of M-H (hydride) species. Activation energy of generation of M-H species via decarboxylation of M-COOH, which was formed under pressurized CO2, would be smaller than that via direct reduction of proton on a metal center. Reactivity of Ru-COOH was investigated as a model compound of M-COOH. As a result, formamide formation was found as a CO2 reduction product in the presence of dialkylamine derivatives. In the case of NAD/NADH complex, molecular structure to enhance the hydricity of NADH framework was determined.

Free Research Field

錯体化学