Electrochemical ammonia oxidation catalyzed by ruthenium complexes: investigation of substituent effect of axial pyridine ligands
Hiroki Toda, Ryoichi Kanega, Tasuku Yano, Takeshi Yoshikawa, Shogo Kuriyama, Yuichiro Himeda, Ken Sakata, Yoshiaki Nishibayashi
Abstract
Abstract We have examined catalytic ammonia oxidation using ruthenium complexes bearing 2,2′-bipyridine-6,6′-dicarboxylate ligand and axial 3- and 4-substituted pyridine ligands under electrochemical conditions to study the substituent effect of the axial pyridine ligands. Ruthenium complex bearing 3,4-dibromopyridine ligands shows the highest catalytic activity to produce up to 145 equivalents of dinitrogen based on the catalyst.
Topics & Concepts
ChemistryRutheniumSubstituentPyridineElectrochemistryAmmoniaPhotochemistryInorganic chemistryMedicinal chemistryOrganic chemistryCatalysisElectrodePhysical chemistryAmmonia Synthesis and Nitrogen ReductionCatalytic Processes in Materials ScienceElectrocatalysts for Energy Conversion