Chinese Journal of Applied Chemistry ›› 2017, Vol. 34 ›› Issue (5): 557-562.DOI: 10.11944/j.issn.1000-0518.2017.05.160339

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Synthesis of Ethylenediamine by Catalytic Ammoniation of Ethylene Glycol

ZHANG Hualiang,YANG Shi,XU Chao,HONG Chao,YUAN Hua()   

  1. Key Laboratory for Green Chemical Process of Ministry of Education,School of Chemical and Environmental Engineering,Wuhan Institute of Technology,Wuhan 430073,China
  • Received:2016-08-24 Accepted:2017-01-17 Published:2017-05-02 Online:2017-05-02
  • Contact: YUAN Hua
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21276201)

Abstract:

To explore a new green process for synthesis of ethylenediamine, ethylenediamine was prepared by catalytic amination of ethylene glycol in the presence of supported two-component composite metal oxides NiO/CuO/Al2O3 catalyst. The structure of the catalyst was characterized by X-ray diffraction(XRD), X-ray photoelectron spectroscopy(XPS) methods. The reaction mixture was analyzed by gas chromatography(GC). The effects of catalyst composition, material ratio, temperature and reaction time on the reaction were investigated. The selectivity of ethylene diamine could reach 56.7% under the condition that n(Ni):n(Cu) ratio was 3:1, catalyst loading was 3%, NH3/HOCH2CH2OH mass ratio was 4:1, and the reation was performed at 180 ℃, 0.6 MPa and for 4 h. Compared with traditional dichloroethane method, this process is more clean and friendly.

Key words: ethylene glycol, ethylene diamine, catalytic amination