邻氯对硝基甲苯催化加氢反应研究  

Research on catalytic hydrogenation of 2-chloro-4-nitrotoluene

作　　者：高明明 程杰 张力 万克柔 林涛 赵茁然 张炳亮 Gao Mingming;Cheng Jie;Zhang Li;Wan Kerou;Lin Tao;Zhao Zhuoran;Zhang Bingliang(Kaili Catalyst&New Materials Co.,Ltd.,Xi an 710201,Shaanxi,China)

机构地区：[1]西安凯立新材料股份有限公司

出　　处：《工业催化》2020年第1期60-63,共4页Industrial Catalysis

摘　　要：主要对邻氯对硝基甲苯液相加氢制2B油催化剂和工艺进行研究。考察稀土改性及浸渍溶剂对催化剂性能的影响,反应条件对邻氯对硝基甲苯转化率和产物选择性的影响,最后考察了催化剂稳定性。研究表明,Ce改性及乙醇浸渍可使PdCe/Al2O3催化剂活性增加,在反应温度120℃、反应压力0.8 MPa和质量空速0.4 h^-1的条件下,邻氯对硝基甲苯转化率和邻氯对氨基甲苯选择性最高,连续运行30天,邻氯对硝基甲苯转化率保持在99.5%以上,邻氯对氨基甲苯选择性保持在99.3%以上。The process of producing 2 B oil by liquid phase hydrogenation of 2-chloro-4-nitrotoluene(2 C4 NT)over PdCe/Al2O3 catalyst was studied.The effects of rare earth modification and impregnation solvent on the performance of the catalyst,the influence of reaction conditions on the conversion of 2 C4 NT and selectivity of product were investigated.Finally,the stability of the catalyst was investigated.The results showed that Ce modification and ethanol impregnation could increase the activity of PdCe/Al2O3 catalyst.Conversion of 2 C4 NT and selectivity of reaction were highest at the reaction temperature of 120℃,reaction pressure of 0.8 MPa,and mass airspeed of 0.4 h^-1.When running continuously for 30 d,the conversion of 2 C4 NT was maintained above 99.5%,and the selectivity was maintained above 99.3%.

关 键 词：催化剂工程 2B油 邻氯对硝基甲苯 乙醇浸渍 催化加氢 

分 类 号：TQ426.6[化学工程] TQ246.1