加氢制备对苯二甲胺工艺研究  

Study on the Process of Preparing p-Phenylenediamine by Hydrogenation

作　　者：王晓莺 李孟璐 庄文超 何媛媛 WANG Xiaoying;LI Menglu;ZHUANG Wenchao;HE Yuanyuan(Henan Leibairui New Material Technology Co.,Ltd.,Puyang 457000,China;Henan Chemical Industry Research Institute Co.,Ltd.,Zhengzhou 450052,China;Henan Metallurgical Research Institute Co.,Ltd.,Zhengzhou 450053,China)

机构地区：[1]河南雷佰瑞新材料科技有限公司,河南濮阳457000 [2]河南省化工研究所有限责任公司,河南郑州450052 [3]河南省冶金研究所有限责任公司,河南郑州450053

出　　处：《河南化工》2024年第6期15-17,25,共4页Henan Chemical Industry

摘　　要：以对苯二甲腈为原料,甲醇为溶剂,雷尼镍为催化剂,采用低温中压催化加氢工艺制备了对苯二甲胺。探究了反应溶剂、催化剂、温度、压力等因素对加氢反应转化率、选择性和产品质量的影响,实验结果表明:溶剂比例为1∶4,催化剂质量分数15%,反应温度60~95℃,压力7~8 MPa条件下,反应转化率为100%,选择性为97%~98%,副产物大幅减少,预期经济和环境效益明显,为工业化实施提供了支撑。Using terephthalonitrile as raw material,methanol as solvent and Raney nickel as catalyst,p-phenylenediamine is prepared by low temperature and medium pressure catalytic hydrogenation process.The effects of reaction solvent,catalyst,temperature,pressure and other factors on the conversion rate,selectivity and product quality of hydrogenation reaction are investigated.The experimental results show that under the conditions of solvent ratio 1∶4,catalyst dosage 15%,reaction temperature 60~95℃and pressure 7~8 MPa,the reaction conversion rate is 100%,the selectivity is 97%~98%,and the by-products are greatly reduced.The expected economic and environmental benefits are obvious,which provides support for the implementation of industrialization.

关 键 词：对苯二甲腈 对苯二甲胺 催化加氢 低温中压 

分 类 号：TQ246.31[化学工程—有机化工]