催化学报

催化学报 ›› 2013, Vol. 34 ›› Issue (1): 152-158.DOI: 10.1016/S1872-2067(11)60514-7

• 研究论文 • 上一篇    下一篇

Hydrodenitrogenation of porphyrin on Ni-Mo based catalysts

Eika W. QIAN a,*, Satoshi ABE b, Yusaku KAGAWA a, Hiroyuki IKEDA b   

  1. a Department of Chemical Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan; b Nippon Ketjen Co. Ltd, 17-4, Isoura-cho, Niihama-shi, Ehime792-0002, Japan
  • 收稿日期:2013-01-04 修回日期:2013-01-09 出版日期:2013-01-23 发布日期:2013-01-23

Hydrodenitrogenation of porphyrin on Ni-Mo based catalysts

Eika W. QIAN a,*, Satoshi ABE b, Yusaku KAGAWA a, Hiroyuki IKEDA b   

  1. a Department of Chemical Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan; b Nippon Ketjen Co. Ltd, 17-4, Isoura-cho, Niihama-shi, Ehime792-0002, Japan
  • Received:2013-01-04 Revised:2013-01-09 Online:2013-01-23 Published:2013-01-23

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摘要： The hydrodenitrogenation (HDN) of porphyrins was carried out over a series of phosphorus containing NiMo/Al2O3 catalysts using a fixed-bed flow reaction system. A method of quantitative analysis of the porphyrin and its derivatives produced by HDN was established. In HDN of porphyrin, four types of hydrocarbons: C8 alkanes, C8 alkenes, C9 alkanes, and C10 alkanes, and two groups of nitrogen-containing compounds: alkyl substituted bipyrrolidines (alkylbipyrrolidines) and alkyl substituted tripyrrolidines (alkyltripyrrolidines) were identified. The hydrogenolysis of porphyrins occurred rapidly at lower temperature but higher temperatures were required for the HDN of porphyrins. The NiMoP3 catalyst showed the highest catalytic activity for the HDN of porphyrins. Based on the characterization of the supports and catalysts, it is suggested that the dispersion of Mo is improved and the number of weak acidic sites on the NiMoP catalysts increases with the addition of phosphorus.

关键词: Hydrodenitrogenation, Porphyrin, Nickel molybdenum catalyst, Phosphorus

Abstract: The hydrodenitrogenation (HDN) of porphyrins was carried out over a series of phosphorus containing NiMo/Al2O3 catalysts using a fixed-bed flow reaction system. A method of quantitative analysis of the porphyrin and its derivatives produced by HDN was established. In HDN of porphyrin, four types of hydrocarbons: C8 alkanes, C8 alkenes, C9 alkanes, and C10 alkanes, and two groups of nitrogen-containing compounds: alkyl substituted bipyrrolidines (alkylbipyrrolidines) and alkyl substituted tripyrrolidines (alkyltripyrrolidines) were identified. The hydrogenolysis of porphyrins occurred rapidly at lower temperature but higher temperatures were required for the HDN of porphyrins. The NiMoP3 catalyst showed the highest catalytic activity for the HDN of porphyrins. Based on the characterization of the supports and catalysts, it is suggested that the dispersion of Mo is improved and the number of weak acidic sites on the NiMoP catalysts increases with the addition of phosphorus.

Key words: Hydrodenitrogenation, Porphyrin, Nickel molybdenum catalyst, Phosphorus