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.
出处
《化工进展》
EI
CAS
CSCD
北大核心
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)
作者简介
吴军（1989-），男，硕士研究生。E-mail：474614330@qq.com。
联系人：何明阳，教授，主要从事有机化学及清洁化工工艺方向的研究。E-mail：hmy@jpu．edu．cn。
