Electrocatalytic reduction of carbon dioxide by mixed-metal trimetallic complexes of the form {[(bpy) 2 Ru(BL)] 2 IrCl 2 } 5 + where bpy = 2,2 -bipyridine and BL = 2,3-bis(2-pyridyl)quinoxaline (dpq) or 2,3-bis(2-pyridyl)benzoquinoxaline (cas 230-33-1) (dpb)

Add time:09/28/2019    Source:infona.pl

The electrocatalytic reduction of carbon dioxide can yield several products depending on the thermodynamic potential applied and the number of electrons transferred. Typical products resulting from the two-electron reduction of carbon dioxide are carbon monoxide and formic acid. Metal complexes can be used as catalysts to enhance the selectivity and efficiency of this process as well as dramatically lower the overpotential needed for this electrocatalysis. The heteronuclear trimetallic systems, {[(bpy) 2 Ru(BL)] 2 IrCl 2 } 5 + where bpy is 2,2 -bipyridine and BL are the bridging ligands 2,3-bis(2-pyridyl)quinoxaline (dpq) or 2,3-bis(2-pyridyl)benzoquinoxaline (dpb), represent a new family of catalysts for the reduction of CO 2 . These systems represent a new structural motif. The two remote Ru centers serve to tune the redox properties of the central catalytically active Ir I I I (BL) 2 Cl 2 core. Reduction of the iridium metal center was necessary prior to the onset of catalysis. Controlled potential electrolysis experiments using these new trimetallic catalysts can give current efficiencies as high as 99% for CO production with high turnover numbers. This is in marked contrast to the lower current efficiency achieved using the monometallic [Ir(BL) 2 Cl 2 ] 1 + analogs which produce formate as a reduction product. These catalysts represent a new class of systems in which the redox properties of the catalytic site can be altered through remote metal coordination and variation without a change in the coordination environment of the catalytic iridium site.

We also recommend Trading Suppliers and Manufacturers of benzoquinoxaline (cas 230-33-1). Pls Click Website Link as below: cas 230-33-1 suppliers

Prev:An efficient and facile synthesis of substituted cinnoline and benzo[h]cinnoline derivatives
Next:Iron‐Catalyzed Annulation of 1,2‐Diamines and Diazodicarbonyls for Diverse and Polyfunctionalized Quinoxalines, Pyrazines, and benzoquinoxaline (cas 230-33-1)s in Water)