Last modified: 2018-08-01
Abstract
Efficient basic hydrotalcites (HT)"supported gold nanoparticles (AuNP) catalysts have been prepared and characterized by XRD, BET, TGA. The catalysts have been developed for the synthesis of imines from alcohol and amine, catalyzed under mild (T= 98C) and soluble"base"free conditions. The catalytic performance can be fine"tuned for this reaction by simple adjustment of the Mg/Al atomic ratio, and the doping of Ce metal to HT support. The synthesis of imines benefits from the high basicity of HT and greatly improves the imines selectivity (Mg/Al=1:2 and HT/Ce= 13:10). These catalysts not only benefits the oxidation of the starting alcohol but also the subsequent steps of the reaction. A control of the composition and ratio of support has been shown to yield optimum selectivity.