高活性Ni/HY催化剂加氢催化合成苯胺类化合物的研究

采用浸渍沉淀法制备Ni/HY催化剂,用BET、XRD、TEM、TPR等方法对其进行表征,并将其应用于硝基化合物液相加氢合成苯胺类化合物反应中.结果表明,Ni/HY催化剂具有较高的催化活性,在温和的反应条件下,反应0.5 h后,硝基化合物的转化率和苯胺类化合物的选择性均高达99.0%以上.该催化剂能储存于150℃以下的空气气氛中,活性组分分散度高,且具有良好的磁分离性能.

Excellent Catalytic Performance of Nickel-based HY Catalyst for the Preparation of Aromatic Amines

A novel passivated Ni/HY catalyst was prepared by the macerate-precipitation technology,the prepared catalyst was fully characterized by BET,XRD,TEM,TPR and applied to the aromatic amines preparation.The Ni/HY catalyst exhibits high catalytic activity for the synthesis of aromatic amines in liquid phase.In the catalytic activity test,under mild condition,the conversion of nitrocompounds and selectivity of aromatic amines were found to be both over 99.0% in 0.5 h.The Ni/HY catalyst can be stored safely in air below 150 ℃ and needs no activation before use,besides,it is also found the catalyst highly dispersion and good magnetic separation.