连续催化胺化制备四甲基乙二胺催化剂  

Study on catalyst for continuous catalytic amination of TMEDA

作　　者：吴军[1] 钱俊峰[1] 孙富安[1] 吴中[1] 崔爱军[1] 何明阳[1] 陈群[1] 

机构地区：[1]常州大学石油化工学院江苏省精细石油化工重点实验室,江苏常州213164

出　　处：《化工进展》2017年第4期1294-1300,共7页Chemical Industry and Engineering Progress

基　　金：江苏省科技厅产学研前瞻项目(BY2015027-16);江苏省产学研项目(BY2014037-17)

摘　　要：以Cu/Ni为主活性组分,研制出适合于N,N-二甲基乙醇胺(DMEA)固定床连续催化胺化制备N,N,N’,N’-四甲基乙二胺(TMEDA)复合催化剂。考察了催化剂载体类型、铜镍摩尔比、负载量、助剂、焙烧温度和时间等因素对催化剂性能的影响。通过实验得出催化剂较佳的制备条件为:以γ-Al_2O_3球为载体,摩尔比Cu∶Ni∶Mn=4∶1∶0.2,负载量20%,500℃下焙烧6h。在反应温度240℃、常压、胺醇摩尔比1∶1、空速0.12h^(–1)、氢气流量30m L/min反应条件下,DMEA转化率和TMEDA选择性分别达到92.8%和82.9%;通过固定床连续500h寿命测试,转化率和选择性分别稳定在90%和80%以上,显示催化剂具有较好的催化活性和稳定性。A compound catalyst with Cu/Ni as the main activate component is applied for continuous catalytic amination DMEA to TMEDA. The influences of catalyst carrier type, Cu/Ni molar ratio, loading amount, additives, roasting time and temperature on the performance of the catalyst were investigated. The best preparation conditions of the catalyst were as follows： with the γ-Al2O3 ball as the carrier, Cu ： Ni ： Mn=4 ： 1 ： 0.2 （mole ratio）, the load amount 20%, and roasting 6h at 500℃. Under the conditions of the reaction temperature of 240℃, atmospheric pressure, amine alcohol molar ratio 1 ： 1, space velocity of 0.12h 1, hydrogen speed of 30 mL/min, the conversion rate of DMEA and the selectivity of TMEDA could achieve 92.8% and 82.9%, respectively. Through 500h life test, the conversion rate and selectivity were stable and maintained at above 90% and 80%, respectively. The experimental results showed that the catalyst had excellent catalytic activity and stability.

关 键 词：N N-二甲基乙醇胺 N N N’ N’-四甲基乙二胺 催化剂 固定床 加氢 

分 类 号：TQ032.4[化学工程]