Method for producing dibenzylamine

The invention provides a preparation method of dibenzylamine, which comprises the following steps: adding benzonitrile into a high-pressure reaction kettle, mixing with a reaction solvent, carrying out hydrogenation reaction under the action of a cerium oxide loaded ruthenium-iron bimetallic catalyst to prepare a reaction crude product, cooling and filtering the catalyst, and rectifying and purifying to obtain a dibenzylamine finished product. The method is mild in reaction condition and high in atom utilization rate, and meets clean and green production requirements. 本发明提供了一种二苄胺的制造方法，通过在高压反应釜中，加入苯甲腈与反应溶剂混合，在氧化铈负载的钌-铁双金属催化剂的作用下进行加氢反应，制得反应粗品，经冷却过滤催化剂后，精馏提纯得到二苄胺成品。该方法反应条件温和、原子利用率高，符合清洁、绿色生产要求。