Citation: WANG Ting-ting, LI Yang, JIN Li-jun, WANG De-chao, YAO De-meng, HU Hao-quan. Upgrading of coal tar with steam catalytic cracking over Al/Ce and Al/Zr co-doped Fe₂O₃ catalysts[J]. Journal of Fuel Chemistry and Technology, ;2019, 47(3): 287-296. shu

Upgrading of coal tar with steam catalytic cracking over Al/Ce and Al/Zr co-doped Fe₂O₃ catalysts

1.
State Key Laboratory of Fine Chemistry, Institute of Coal Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
2.
School of Civil Engineering, University of Science and Technology LiaoNing, Anshan 114051, China

Corresponding author: HU Hao-quan, hhu@dlut.edu.cn
Received Date: 15 November 2018
Revised Date: 17 January 2019

Fund Project: The project was supported by the Joint Fund of Coal-based Low Carbon by NSFC and Shanxi Provincial Government of China (U1710105), and the National Key R&D Program of China (2016YFB0600301)the Joint Fund of Coal-based Low Carbon by NSFC and Shanxi Provincial Government of China U1710105the National Key R&D Program of China 2016YFB0600301

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The upgrading of coal tar by means of steam catalytic cracking (SCC) is a promising method. In this study, Al/Ce and Al/Zr co-doped Fe₂O₃ catalysts were prepared and used for SCC of coal tar for improving the light tar yield. The SCC was conducted at 550 ℃ for 1 h. It was found that the crystal size decreased over doped Fe₂O₃ catalysts, and the pore volume and specific surface area increased. XPS analysis showed that lattice oxygen was the majority oxygen species and doping can increased the O^- concentration. It was shown that Al/Ce and Al/Zr co-doped Fe₂O₃ could improve the catalytic activity of Fe₂O₃. The light tar yield over FeAlZr1, FeAlZr2, FeAlCe1 and FeAlCe2 were 63.2%, 58.1%, 60.2% and 55.1%, respectively, higher than that on Fe₂O₃ being 49.7%. The oxygen species from steam dissociation and Fe₂O₃ could take part in the upgrading of coal tar. It was revealed that the specific surface area and the O^- on the Fe₂O₃ catalysts were the primary factors in determining the SCC performance.
- coal tar,
- steam catalytic upgrading,
- co-doped Fe₂O₃
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沈阳化工大学材料科学与工程学院沈阳 110142

Upgrading of coal tar with steam catalytic cracking over Al/Ce and Al/Zr co-doped Fe2O3 catalysts

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通讯作者: 陈斌, bchen63@163.com

Upgrading of coal tar with steam catalytic cracking over Al/Ce and Al/Zr co-doped Fe₂O₃ catalysts