液相催化加氢制备对苯二胺%Study on the Preparation of p-Phenylenediamine by Liquid Catalytic Hydrogenation
河南省科学院质量检验与分析测试研究中心,河南,郑州,450008 河南省化工研究所有限责任公司,河南,郑州450052 河南省化工研究所有限责任公司,河南,郑州450052;河南省化学催化重点实验室,河南,郑州,450052
2011-03-21
对硝基苯胺 骨架镍 液相催化加氢
以对硝基苯胺为原料,乙醇为溶剂,采用骨架镍作催化剂,液相催化加氢制备对苯二胺.该工艺路线可行,最佳反应条件为温度90~110℃,压力1.5~2.0 MPa,在最佳条件下产品收率大于90.0%,产品含量大于99.0%.%Using p-nitroaniline as raw material,ethanol as solvent,and Raney nickel as catalyst,the p-phenylenediamine is prepared by liquid phase catalytic hydrogenation.The optimized technology is as follows:temperature is 90~110 ℃,pressure is 1.5~2.0 MPa,under this condition,the yield of p-phenylenediamine is over than 90.0%,the purity is over than 99.0%.
