Study on Cu-Ni-Zn catalyst for catalytic amination of fatty alcohol

Long chain alkyl dimethyl amine is an important organic intermediate. Its m ain preparation process is the catalytic amination of fatty alcohol with di methyl amine under the action of hydrogenation-dehydrogenation catalysts. T he main improving target of the amination catalysts is to promote their sel ectivity. The effect of adding Zn to the system of Cu-Ni supported on CaCO3 and the mechanism of the action of Zn have been studied in this paper. It is found that the selectivity of Cu-Ni catalyst is improved effectively by the adding of Zn, and an important action of Zn is that it can prohibit the reduction of Ni in the catalyst. The reduction level of Ni is responsible for the selectivity of the catalysts.