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

doi:10.1016/j.cjche.2021.03.015

中国化学工程学报 ›› 2021, Vol. 39 ›› Issue (11): 126-134.DOI: 10.1016/j.cjche.2021.03.015

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

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

National Engineering Research Center of Chemical Fertilizer Catalyst (NERC-CFC), Fuzhou University, Fuzhou 350002, China

收稿日期:2021-01-08 修回日期:2021-03-06 出版日期:2021-11-28 发布日期:2021-12-27
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).

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

National Engineering Research Center of Chemical Fertilizer Catalyst (NERC-CFC), Fuzhou University, Fuzhou 350002, China

Received:2021-01-08 Revised:2021-03-06 Online:2021-11-28 Published:2021-12-27
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).

摘要/Abstract

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

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

Yongde Ma, Rengan Liang, Wenquan Wu, Jiayin Zhang, Yanning Cao, Kuan Huang, Lilong Jiang. Enhancing the activity of MoS₂/SiO₂-Al₂O₃ bifunctional catalysts for suspended-bed hydrocracking of heavy oils by doping with Zr atoms[J]. 中国化学工程学报, 2021, 39(11): 126-134.

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

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

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