Effect of Ceria on redox-catalytic property in mild condition: A solvent-free route for imine synthesis at low temperature

Five different nanocerias were prepared and used to catalyze the direct coupling of alcohol and amine to the corresponding imines under air atmosphere at low temperature. The catalytic efficiencies have great differences, CeO2 prepared by coprecipitation at room temperature (called CeO2-5) has the best catalytic activity, whose yield reaches 99% at 303 K for 36 h, 100 times higher than the nano-octahedras ceria (called CeO2-4) and also higher...