Citation: HU Nai-fang, CUI Hai-tao, QIU Ze-gang, ZHAO Liang-fu, MENG Xin-xin, ZHAO Zheng-quan, AO Guang-yu. Effect of phosphorus loadings on the performance of Co-Mo/γ-Al₂O₃ in hydrodesulfurization of coal tar[J]. Journal of Fuel Chemistry and Technology, ;2016, 44(6): 745-753. shu

Effect of phosphorus loadings on the performance of Co-Mo/γ-Al₂O₃ in hydrodesulfurization of coal tar

1.
Laboratory of Applied Catalysis and Green Chemical Engineering, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China
3.
College of Chemistry and Chemical Engineering, Xi'an University of Petroleum, Xi'an 710065, China
4.
College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
5.
CHI FENG BO YUAN KE JI YOU XIAN ZE REN GONG SI, Chifeng 025350, China

Corresponding author: ZHAO Liang-fu, lfzhao@sxicc.ac.cn
Received Date: 16 December 2015
Revised Date: 22 January 2016

Figures(7)

With the fixed loadings of molybdenum oxide of 13.50% and cobalt oxide of 2.11%, respectively, the Co-Mo/γ-Al₂O₃ catalysts were modified by adding different mass concentration of phosphoric acid via separate-step impregnation method. The effect of different phosphorus loadings of catalysts on the hydrodesulfurization performance was studied using middle temperature coal tar from Chifeng, Inner Mongolia. The structural properties of catalysts were characterized by the temperature programmed desorption of NH₃ (NH₃-TPD), XRD, XPS and other methods. The results show that a proper loading of phosphorus can weaken the interaction between the support and the active components, improve the dispersion of active compents on the surface of support, and promote the reduction and sulfuration of the active components and the distribution of acid, which can improve the hydrodesulfurization performance of the catalysts. The catalyst prepared with the phosphoric acid of 4% concentration exhibits the highest hydrodesulfurization activity with the sulfur removal of 96.98%. The effect of mass concentration of phosphoric acid on the hydrodesulfurization activety of the prepared catalysts is in the order of 4% >2% >6% >1% >0 >8%.
- phosphorus modification,
- Co-Mo catalysts,
- coal tar,
- HDS
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沈阳化工大学材料科学与工程学院沈阳 110142

Effect of phosphorus loadings on the performance of Co-Mo/γ-Al2O3 in hydrodesulfurization of coal tar

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通讯作者: 陈斌, bchen63@163.com

Effect of phosphorus loadings on the performance of Co-Mo/γ-Al₂O₃ in hydrodesulfurization of coal tar