Effect of Alumina Supports on the Formation of Active Phase of Selective Hydrodesulfurization Catalysts Co-Mo/Al2O3

doi:10.1016/S1872-2067(10)60171-4

Chinese Journal of Catalysis ›› 2011, Vol. 32 ›› Issue (2): 240-249.DOI: 10.1016/S1872-2067(10)60171-4

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Effect of Alumina Supports on the Formation of Active Phase of Selective Hydrodesulfurization Catalysts Co-Mo/Al₂O₃

Qiherima1,3, LI Huifeng2, YUAN Hui2, ZHANG Yunhong1, XU Guangtong2,*

1The Institute for Chemical Physics, Beijing Institute of Technology, Beijing 100081, China; 2Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China; 3Department of Pharmacy, Inner Mongolia Medical College, Hohhot 010059, Inner Mongolia, China

Received:2010-09-21 Revised:2010-10-21 Online:2011-01-26 Published:2014-06-25

Abstract

Abstract: Two different commercial alumina supports were used for the preparation of selective hydrodesulfurization (HDS) catalysts Co-Mo/Al₂O₃. The effect of support properties on the HDS activity and selectivity of the corresponding Co-Mo catalysts were studied by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, scanning transmission electron microscopy- energy dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. The HDS activity and selectivity were measured using a continuous flow fixed-bed microreactor. The Al₂O₃ support with higher crystallinity and fewer hydroxyl groups had a moderate metal-support interaction, which resulted in an increase of the average slab length and stacking number of MoS₂. This gave more formation of the active CoMoS phase and an increase in HDS activity and selectivity.

Key words: alumina, property, cobalt, molybdenum, hydrodesulfurization, active phase

Qiherima1,3, LI Huifeng2, YUAN Hui2, ZHANG Yunhong1, XU Guangtong2,*. Effect of Alumina Supports on the Formation of Active Phase of Selective Hydrodesulfurization Catalysts Co-Mo/Al₂O₃[J]. Chinese Journal of Catalysis, 2011, 32(2): 240-249.

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Effect of Alumina Supports on the Formation of Active Phase of Selective Hydrodesulfurization Catalysts Co-Mo/Al₂O₃

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