化工进展 ›› 2017, Vol. 36 ›› Issue (04): 1294-1300.DOI: 10.16085/j.issn.1000-6613.2017.04.019

• 工业催化 • 上一篇    下一篇

连续催化胺化制备四甲基乙二胺催化剂

吴军, 钱俊峰, 孙富安, 吴中, 崔爱军, 何明阳, 陈群   

  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
  • 收稿日期:2016-08-25 修回日期:2016-12-14 出版日期:2017-04-05 发布日期:2017-04-05
  • 通讯作者: 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。
  • 作者简介:吴军(1989-),男,硕士研究生。E-mail:474614330@qq.com。
  • 基金资助:
    江苏省科技厅产学研前瞻项目(BY2015027-16)及江苏省产学研项目(BY2014037-17)。

Study on catalyst for continuous catalytic amination of TMEDA

WU Jun, QIAN Junfeng, SUN Fu'an, WU Zhong, CUI Aijun, HE Mingyang, CHEN Qun   

  1. Key Laboratory of Fine Petrochemical Engineering, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, Jiangsu, China
  • Received:2016-08-25 Revised:2016-12-14 Online:2017-04-05 Published:2017-04-05

摘要: 以Cu/Ni为主活性组分,研制出适合于NN-二甲基乙醇胺(DMEA)固定床连续催化胺化制备NNN’,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-Al2O3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30mL/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。

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

Abstract: 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.

Key words: DMEA, TMEDA, catalyst, fixed-bed, hydrogenation

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