SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2021, Vol. 39 ›› Issue (11): 126-134.DOI: 10.1016/j.cjche.2021.03.015

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

Enhancing the activity of MoS2/SiO2-Al2O3 bifunctional catalysts for suspended-bed hydrocracking of heavy oils by doping with Zr atoms

Yongde Ma, Rengan Liang, Wenquan Wu, Jiayin Zhang, Yanning Cao, Kuan Huang, Lilong Jiang   

  1. National Engineering Research Center of Chemical Fertilizer Catalyst (NERC-CFC), Fuzhou University, Fuzhou 350002, China
  • Received:2021-01-08 Revised:2021-03-06 Online:2021-12-27 Published:2021-11-28
  • Contact: Kuan Huang, Lilong Jiang
  • Supported by:
    This work was financially supported by the National Key Research & Development Program of China (2018YFA0209403), the National Natural Science Foundation of China (U1662108), and the Science and Technology Project of Fujian Province (FG- 2016002).

Enhancing the activity of MoS2/SiO2-Al2O3 bifunctional catalysts for suspended-bed hydrocracking of heavy oils by doping with Zr atoms

Yongde Ma, Rengan Liang, Wenquan Wu, Jiayin Zhang, Yanning Cao, Kuan Huang, Lilong Jiang   

  1. National Engineering Research Center of Chemical Fertilizer Catalyst (NERC-CFC), Fuzhou University, Fuzhou 350002, China
  • 通讯作者: Kuan Huang, Lilong Jiang
  • 基金资助:
    This work was financially supported by the National Key Research & Development Program of China (2018YFA0209403), the National Natural Science Foundation of China (U1662108), and the Science and Technology Project of Fujian Province (FG- 2016002).

Abstract: Developing catalysts with not only hydrogenation activity but also cracking activity is very important for the advancement of suspended-bed hydrocracking technology. Within this respect, MoS2/SiO2-Al2O3 bifunctional catalyst is a kind of typical catalysts with both hydrogenation and cracking activity. Herein, a series of Zr-doped SiO2-Al2O3 mixed oxides were synthesized by a sol-gel coupled with hydrothermal method. The synthesized mixed oxides were characterized for chemical structures and acidic properties. It is found that doping SiO2-Al2O3 with Zr atoms significantly increases the numbers of acidic sites. The Zr-doped SiO2-Al2O3mixed oxides were then combined with dispersed MoS2, which was in-situ produced from oil-soluble Mo precursors, to fabricate a novel kind of bifunctional catalysts for suspended-bed hydrocracking of heavy oils. Owing to the significantly increased numbers of acidic sites in Zr-doped SiO2-Al2O3 mixed oxides, corresponding bifunctional catalysts demonstrate much enhanced activity for suspended-bed hydrocracking of heavy oils in relative to MoS2/SiO2-Al2O3 bifunctional catalysts.

Key words: Petroleum, Hydrogenation, Catalyst, Suspended bed, Cracking, Mixed oxide

摘要: Developing catalysts with not only hydrogenation activity but also cracking activity is very important for the advancement of suspended-bed hydrocracking technology. Within this respect, MoS2/SiO2-Al2O3 bifunctional catalyst is a kind of typical catalysts with both hydrogenation and cracking activity. Herein, a series of Zr-doped SiO2-Al2O3 mixed oxides were synthesized by a sol-gel coupled with hydrothermal method. The synthesized mixed oxides were characterized for chemical structures and acidic properties. It is found that doping SiO2-Al2O3 with Zr atoms significantly increases the numbers of acidic sites. The Zr-doped SiO2-Al2O3mixed oxides were then combined with dispersed MoS2, which was in-situ produced from oil-soluble Mo precursors, to fabricate a novel kind of bifunctional catalysts for suspended-bed hydrocracking of heavy oils. Owing to the significantly increased numbers of acidic sites in Zr-doped SiO2-Al2O3 mixed oxides, corresponding bifunctional catalysts demonstrate much enhanced activity for suspended-bed hydrocracking of heavy oils in relative to MoS2/SiO2-Al2O3 bifunctional catalysts.

关键词: Petroleum, Hydrogenation, Catalyst, Suspended bed, Cracking, Mixed oxide