催化学报

催化学报 ›› 2011, Vol. 32 ›› Issue (2): 240-249.DOI: 10.1016/S1872-2067(10)60171-4

• 研究论文 • 上一篇    下一篇

Al2O3 性质对加氢脱硫催化剂 Co-Mo/Al2O3 活性相形成的影响

齐和日玛 1,3, 李会峰 2, 袁蕙 2, 张韫宏 1, 徐广通 2   

  1. 1 北京理工大学化学物理研究所, 北京 100081; 2 中国石化石油化工科学研究院, 北京 100083; 3 内蒙古医学院药学院, 内蒙古呼和浩特 010059
  • 收稿日期:2010-09-21 修回日期:2010-10-21 出版日期:2011-01-26 发布日期:2014-06-25

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,*   

  1. 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

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摘要： 以两种商用 Al2O3 为载体, 制备了汽油选择性加氢脱硫催化剂 Co-Mo/Al2O3, 并采用红外光谱、X 射线衍射、N2 吸附-脱附、透射电镜、扫描透射-能谱和 X 射线光电子能谱等手段系统研究了载体物化性质对催化剂活性相形成的影响. 结果表明, 表面羟基数量少和结晶程度高的载体与活性金属间相互作用减弱, 促进了 Mo 物种的硫化还原, 使 MoS2 片晶的尺寸和层数增加, 且其硫化态催化剂上 CoMoS 活性位更多, CoMoS/MoS2 比更大, 因而显著提高了相应 Co-Mo 催化剂加氢脱硫活性和选择性.

关键词: 氧化铝, 物化性质, 钴, 钼, 加氢脱硫, 活性相

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