SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2022, Vol. 41 ›› Issue (1): 374-383.DOI: 10.1016/j.cjche.2021.07.024

• Catalysis, Kinetics and Reaction Engineering • Previous Articles     Next Articles

Development of a new continuous process for the production of 3,5-dimethylpiperidine

Tao Lin1,2,3,4,5,6, Xiaoxun Ma1,3,4,5,6   

  1. 1 School of Chemical Engineering, Northwest University, Xi’an 710069, China;
    2 Kaili Catalyst & New Materials Co., Ltd., Xi’an 710201, China;
    3 Chemical Engineering Research Center of the Ministry of Education (MOE) for Advanced Use Technology of Shanbei Energy, Xi’an 710069, China;
    4 Shaanxi Research Center of Engineering Technology for Clean Coal Conversion, Xi’an 710069, China;
    5 Collaborative Innovation Center for Development of Energy and Chemical Industry in Northern Shaanxi, Xi’an 710069, China;
    6 International Scientific and Technological Cooperation Base of the Ministry of Science and Technology (MOST) for Clean Utilization of Hydrocarbon Resources, Xi’an 710069, China
  • Received:2021-03-18 Revised:2021-06-24 Online:2022-02-25 Published:2022-01-28
  • Contact: Xiaoxun Ma,E-mail address:maxym@nwu.edu.cn
  • Supported by:
    This word was supported by the National Natural Science Foundation of China (21536009), and the Science and Technology Plan Projects of Shaanxi Province (2017ZDCXL-GY-10-03).

Development of a new continuous process for the production of 3,5-dimethylpiperidine

Tao Lin1,2,3,4,5,6, Xiaoxun Ma1,3,4,5,6   

  1. 1 School of Chemical Engineering, Northwest University, Xi’an 710069, China;
    2 Kaili Catalyst & New Materials Co., Ltd., Xi’an 710201, China;
    3 Chemical Engineering Research Center of the Ministry of Education (MOE) for Advanced Use Technology of Shanbei Energy, Xi’an 710069, China;
    4 Shaanxi Research Center of Engineering Technology for Clean Coal Conversion, Xi’an 710069, China;
    5 Collaborative Innovation Center for Development of Energy and Chemical Industry in Northern Shaanxi, Xi’an 710069, China;
    6 International Scientific and Technological Cooperation Base of the Ministry of Science and Technology (MOST) for Clean Utilization of Hydrocarbon Resources, Xi’an 710069, China
  • 通讯作者: Xiaoxun Ma,E-mail address:maxym@nwu.edu.cn
  • 基金资助:
    This word was supported by the National Natural Science Foundation of China (21536009), and the Science and Technology Plan Projects of Shaanxi Province (2017ZDCXL-GY-10-03).

Abstract: This paper developed a new clean continuous process for the hydrogenation of 3,5-dimethylpyridine (DPY) to 3,5-dimethylpiperidine (DPI) without solvent. A series of Ru/C catalysts were prepared by impregnation method, which were characterized by the BET, ICP, CO chemisorptions, XRD, SEM, EDS, TEM and TG. The effect of active species, loading, catalyst support, reaction temperature and pressure on the catalytic performance was investigated. The influence of internal and external diffusion in the trickle-bed reactor (TBR) was basically eliminated by adjusting the particle size and dosage of the Ru/C catalyst. The reaction performance of the hydrogenation of DPY to DPI in the TBR and kettle reactor (KR) was compared, and the superiority of the TBR process was analyzed. The results show that this new continuous process developed in this study is an efficient way to realize the hydrogenation of DPY to DPI, and has a good industrial application prospect.

Key words: Trickle-bed reactor (TBR), Kettle reactor (KR), Hydrogenation, 3,5-Dimethylpyridine (DPY), 3,5-Dimethylpiperidine (DPI)

摘要: This paper developed a new clean continuous process for the hydrogenation of 3,5-dimethylpyridine (DPY) to 3,5-dimethylpiperidine (DPI) without solvent. A series of Ru/C catalysts were prepared by impregnation method, which were characterized by the BET, ICP, CO chemisorptions, XRD, SEM, EDS, TEM and TG. The effect of active species, loading, catalyst support, reaction temperature and pressure on the catalytic performance was investigated. The influence of internal and external diffusion in the trickle-bed reactor (TBR) was basically eliminated by adjusting the particle size and dosage of the Ru/C catalyst. The reaction performance of the hydrogenation of DPY to DPI in the TBR and kettle reactor (KR) was compared, and the superiority of the TBR process was analyzed. The results show that this new continuous process developed in this study is an efficient way to realize the hydrogenation of DPY to DPI, and has a good industrial application prospect.

关键词: Trickle-bed reactor (TBR), Kettle reactor (KR), Hydrogenation, 3,5-Dimethylpyridine (DPY), 3,5-Dimethylpiperidine (DPI)