SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2019, Vol. 27 ›› Issue (2): 386-390.DOI: 10.1016/j.cjche.2018.04.029

• Catalysis, Kinetics and Reaction Engineering • 上一篇    下一篇

The influence mechanism of solvent on the hydrogenation of dimethyl oxalate

Shi Yin, Lingjun Zhu, Xiaoliu Wang, Yingying Liu, Shurong Wang   

  1. State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
  • 收稿日期:2018-02-10 修回日期:2018-03-30 出版日期:2019-02-28 发布日期:2019-03-18
  • 通讯作者: Lingjun Zhu, Shurong Wang
  • 基金资助:

    Supported by the National Natural Science Foundation of China (51661145011, 51476142), the National Science and Technology Supporting Plan Through Contract (2015BAD15B06) and the Program of Introducing Talents of Discipline to University (B08026)

The influence mechanism of solvent on the hydrogenation of dimethyl oxalate

Shi Yin, Lingjun Zhu, Xiaoliu Wang, Yingying Liu, Shurong Wang   

  1. State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
  • Received:2018-02-10 Revised:2018-03-30 Online:2019-02-28 Published:2019-03-18
  • Contact: Lingjun Zhu, Shurong Wang
  • Supported by:

    Supported by the National Natural Science Foundation of China (51661145011, 51476142), the National Science and Technology Supporting Plan Through Contract (2015BAD15B06) and the Program of Introducing Talents of Discipline to University (B08026)

摘要: The hydrogenation of dimethyl oxalate (DMO) for the producing of C2-C4 alcohols with methanol as solvent was researched at the temperature of 270℃ to 310℃. Ethylene glycol (EG) was the main product at low temperature and the selectivity of which was 61.9% at 230℃. However, EG selectivity decreased sharply with the increase of temperature while ethanol became the main liquid products with the selectivity of 43.5% at 270℃. It can be ascribed to a thorough hydrogenation of DMO at a high temperature. In addition, the promotion of Guerbet reaction led to the production of propanol and butanol. Simultaneously, the amount of gas products including CO, CO2 and dimethyl ether (DME) also increased, which became a competition factor in the conversion of DMO to liquid products including C2-C4 alcohols. The blank test was carried out with pure methanol as feedstock with and without Cu/SiO2 catalyst, which revealed that methanol was involved in the formation of gas products and higher alcohols on Cu-based catalyst, and the main gas product was CO.

关键词: Hydrogenation, Dimethyl oxalate, Solvent, Higher alcohols, Decomposition

Abstract: The hydrogenation of dimethyl oxalate (DMO) for the producing of C2-C4 alcohols with methanol as solvent was researched at the temperature of 270℃ to 310℃. Ethylene glycol (EG) was the main product at low temperature and the selectivity of which was 61.9% at 230℃. However, EG selectivity decreased sharply with the increase of temperature while ethanol became the main liquid products with the selectivity of 43.5% at 270℃. It can be ascribed to a thorough hydrogenation of DMO at a high temperature. In addition, the promotion of Guerbet reaction led to the production of propanol and butanol. Simultaneously, the amount of gas products including CO, CO2 and dimethyl ether (DME) also increased, which became a competition factor in the conversion of DMO to liquid products including C2-C4 alcohols. The blank test was carried out with pure methanol as feedstock with and without Cu/SiO2 catalyst, which revealed that methanol was involved in the formation of gas products and higher alcohols on Cu-based catalyst, and the main gas product was CO.

Key words: Hydrogenation, Dimethyl oxalate, Solvent, Higher alcohols, Decomposition