Highly efficient sulfurized Re–Ir catalysts for multiple N-methylation of ethylenediamine and its homologous series with CO2 and H2 in water solvent

Sulfurized, highly dispersed clusters composed of Re and Ir species on carbon black showed unique catalytic performance for multiple N -methylation of aliphatic amines consisting of C2/C3 unit wedged between two amino groups with CO 2 and H 2 in water.