Preparation method and application of catalyst for preparation of aniline from nitrobenzene through liquid phase hydrogenation

The invention relates to a preparation method and application of a catalyst for preparation of aniline from nitrobenzene through liquid phase. The catalyst adopts slag from an aniline tar incinerator of nitrobenzene hydrogenation device as a carrier which is loaded with metals M, N and cerium, and is prepared through the steps of grinding, washing, loading, calcining and reducing, wherein the metal M is one of Zr, Nb, Mo and Y, and the metal N is one of Co, Ni and Cu. According to the catalyst prepared by using the method, precious metal in the slag is recycled, nitrobenzene hydrogenation can be catalyzed under mild conditions to prepare aniline, and the catalyst has extremely high catalytic efficiency; and the catalyst is easy to separate and recover, has good reusability, solves problems caused by the incinerator slag, and has good industrial application prospects. 本发明涉及一种硝基苯液相加氢制备苯胺催化剂的制备方法及其应用；所述催化剂利用硝基苯加氢装置苯胺焦油焚烧炉炉渣作为载体，并负载金属M和N和铈，通过研磨、洗涤、负载、煅烧、还原步骤制成，其中，金属M为Zr、Nb、Mo、Y中的一种，金属N为Co、Ni、Cu中的一种；该方法制备的催化剂，回收利用