催化学报

催化学报 ›› 2012, Vol. 33 ›› Issue (9): 1546-1551.DOI: 10.3724/SP.J.1088.2012.20231

• 研究论文 • 上一篇    下一篇

渣油加氢处理过程中 Mo-V/Al2O3 的催化性能及协同效应

贾燕子, 杨清河*, 孙淑玲, 聂红, 李大东   

  1. 中国石化石油化工科学研究院, 北京 100083
  • 收稿日期:2012-03-17 修回日期:2012-06-05 出版日期:2012-09-11 发布日期:2012-09-11

Catalytic Performance and Synergetic Effect of Mo-V/Al2O3 in Residue Hydrotreatment

JIA Yanzi, YANG Qinghe*, SUN Shuling, NIE Hong, LI Dadong   

  1. Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
  • Received:2012-03-17 Revised:2012-06-05 Online:2012-09-11 Published:2012-09-11

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摘要： 采用孔饱和浸渍法制备了不同 Mo/(Mo+V) 原子比的 Mo-V/Al2O3 催化剂, 运用拉曼光谱、H2 程序升温还原和高分辨透射电镜对催化剂进行了表征, 同时以萘为模型化合物, 考察了催化剂的加氢活性; 以科威特常渣为原料, 考察了其加氢脱金属和脱硫活性. 结果表明, 在上述反应中, Mo 与 V 具有协同作用. 由于渣油中金属和硫的存在形态不同, 并且 V-Mo-S 相和 V-S 相对于渣油加氢脱金属反应的催化作用要大于渣油加氢脱硫反应, 因此与 Ni-Mo/Al2O3 催化剂相比, Mo-V/Al2O3 催化剂的脱金属活性较高, 而脱硫活性较低.

关键词: 渣油, 加氢脱金属, 加氢, 钼, 钒, 氧化铝

Abstract: Mo-V/Al2O3 catalyst samples with different atom ratios of Mo/(Mo+V) were prepared by pore volume impregnation. The catalyst samples were characterized by Raman spectroscopy, H2 temperature-programmed reduction, and high resolution transmission electron microscopy. The catalytic performance of Mo-V/Al2O3 samples for model molecules (naphthalene) and for real feedstock (Kuwait atmosphere residue) was measured after sulfidation. Hydrogenation (HYD), hydrodemetallization (HDM), and hydrodesulfurization (HDS) were assessed. It can be concluded that Mo and V exhibited a synergetic effect in model molecules HYD and residue HDM reactions. Because the metals and sulfurs exist in different forms in residue and the V–S and V–Mo–S phases are more active for HDM than HDS, it is observed that the Mo-V/Al2O3 catalyst exhibited higher HDM activity and lower HDS activity compared with the Ni-Mo/Al2O3 catalyst.

Key words: residue, hydrodemetallization, hydrogenation, molybdenum, vanadium, alumina