PETR 4 |
| A series of NiMo/Al2O3 catalysts added with phosphorus were prepared. The catalytic activity of these catalysts in the HDN of carbazole, a non-basic nitrogen-containing compound, and acridine, a basic nitrogen-containing compound were carried out in a pressurized fixed-bed flow reaction system. Based on the kinetic analysis of the reaction data, the addition effect of phosphorus on the NiMo/Al2O3 catalyst was investigated. Further, the characterization of the catalysts was conducted. In HDN of carbazole and acridine, the NiMoP catalysts shows the higher performance than NiMo catalyst. NiMoP03 catalyst shows the highest catalytic activity in HDN of both carbazole and acridine. Based on the kinetic analysis, it is suggested that the hydrogenation of aromatic ring of carbazole or acridine to give saturated hydrodenitrogenation products is enhanced by the addition of phosphorus. Further, it is suggested that the dispersion of Mo species is improved and number of weak acidic sites on the NiMoP catalysts with the addition of phosphorus increases. Moreover, the order of adsorption amount of NO and NH3 for the NiMoP catalysts is the same to that of catalytic activities in the HDN of carbazole and acridine. |
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2nd International Symposium on Hydrotreating/Hydrocracking Technologies
8:30 AM-11:50 AM, Sunday, 10 September 2006 Palace -- Presidio Room, Oral
Division of Petroleum Chemistry |