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An Iron Quaterpyridine Complex as Precursor for the Electrocatalytic Reduction of CO 2 to Methane
Author(s) -
Cometto Claudio,
Chen Lingjing,
Mendoza Daniela,
LassalleKaiser Benedikt,
Lau TaiChu,
Robert Marc
Publication year - 2019
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201902040
Subject(s) - triethanolamine , chemistry , electrolysis , inorganic chemistry , catalysis , bulk electrolysis , acetonitrile , electrochemistry , methane , metal , x ray photoelectron spectroscopy , faraday efficiency , x ray absorption spectroscopy , absorption spectroscopy , electrocatalyst , cyclic voltammetry , electrode , analytical chemistry (journal) , chemical engineering , organic chemistry , electrolyte , physics , quantum mechanics , engineering
A Fe quaterpyridine complex was used as a molecular precursor for the electrochemical reduction of CO 2 to CH 4 in acetonitrile in the presence of triethanolamine. CH 4 was produced with a faradaic yield of approximately 2.1 % at 25 °C and 1 atm pressure of CO 2 as reactant. Controlled potential electrolysis coupled to ex situ X‐ray photoelectron spectroscopy and X‐ray absorption spectroscopy of the electrode surface revealed the formation of metallic iron covered by iron oxides as species responsible for catalysis.