SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2024, Vol. 69 ›› Issue (5): 72-78.DOI: 10.1016/j.cjche.2024.01.006

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Facile molybdenum and aluminum recovery from spent hydrogenation catalyst

Zhenhui Lv1,2, Jianan Li1, Dong Xue2, Tao Yang2, Gang Wang2, Chong Peng1   

  1. 1. State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China;
    2. Dalian Research Institute of Petroleum and Petrochemicals, SINOPEC, Dalian 116041, China
  • Received:2023-08-01 Revised:2024-01-20 Online:2024-07-01 Published:2024-05-28
  • Contact: Chong Peng,E-mail:pengchong@dlut.edu.cn
  • Supported by:
    This work was supported by grants from the National Key Research and Development Program of China (2023YE41507601), the National Natural Science Foundation of China (22122807, 22378038), the Fundamental Research Funds for the Central Universities (DUT23RC(3)044), and State Key Laboratory of Heavy Oil Processing, China University of Petroleum (WX20230149).

Facile molybdenum and aluminum recovery from spent hydrogenation catalyst

Zhenhui Lv1,2, Jianan Li1, Dong Xue2, Tao Yang2, Gang Wang2, Chong Peng1   

  1. 1. State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China;
    2. Dalian Research Institute of Petroleum and Petrochemicals, SINOPEC, Dalian 116041, China
  • 通讯作者: Chong Peng,E-mail:pengchong@dlut.edu.cn
  • 基金资助:
    This work was supported by grants from the National Key Research and Development Program of China (2023YE41507601), the National Natural Science Foundation of China (22122807, 22378038), the Fundamental Research Funds for the Central Universities (DUT23RC(3)044), and State Key Laboratory of Heavy Oil Processing, China University of Petroleum (WX20230149).

Abstract: Industrial catalyst waste has emerged as a hazardous pollutant that requires safe and proper disposal after the unloading process. Finding a valuable and sustainable strategy for its treatment is a significant challenge compared to traditional methods. In this study, we present a facile method for the recovery of molybdenum and aluminum contents from spent Mo-Ni/Al2O3 hydrogenation catalysts through crystallization separation and coprecipitation. Furthermore, the recovered molybdenum and aluminum are utilized as active metals and carriers for the preparation of new catalysts. Their properties were thoroughly analyzed and investigated using various characterization techniques. The hydrogenation activity of these newly prepared catalysts was evaluated on a fixed-bed small-scale device and compared with a reference catalyst synthesized from commercial raw reagents. Finally, the hydrogenation activity of the catalysts was further assessed by using the entire distillate oil of coal liquefaction as the raw oil, specifically focusing on denitrogenation and aromatic saturation. This work not only offers an effective solution for recycling catalysts but also promotes sustainable development.

Key words: Waste treatment, Alumina, Hydrogenation, Catalyst, Crystallization, Precipitation

摘要: Industrial catalyst waste has emerged as a hazardous pollutant that requires safe and proper disposal after the unloading process. Finding a valuable and sustainable strategy for its treatment is a significant challenge compared to traditional methods. In this study, we present a facile method for the recovery of molybdenum and aluminum contents from spent Mo-Ni/Al2O3 hydrogenation catalysts through crystallization separation and coprecipitation. Furthermore, the recovered molybdenum and aluminum are utilized as active metals and carriers for the preparation of new catalysts. Their properties were thoroughly analyzed and investigated using various characterization techniques. The hydrogenation activity of these newly prepared catalysts was evaluated on a fixed-bed small-scale device and compared with a reference catalyst synthesized from commercial raw reagents. Finally, the hydrogenation activity of the catalysts was further assessed by using the entire distillate oil of coal liquefaction as the raw oil, specifically focusing on denitrogenation and aromatic saturation. This work not only offers an effective solution for recycling catalysts but also promotes sustainable development.

关键词: Waste treatment, Alumina, Hydrogenation, Catalyst, Crystallization, Precipitation