Study on Mo-Ni/Al₂O₃ Catalyst for Conversion of Mercaptans in the FCC Gasoline

Abstract:

A Mo-Ni/Al₂O₃ catalyst for converting mercaptans into thioethers to remove the mercaptans in the FCC gasoline was studied. Under the optimized conditions, the catalyst showed its good catalytic reaction performance and the activity remained stable after the 1500 h life experiment. After the accelerated aging experiment under severe conditions, the catalyst finally lost its activity at 1850 h. The samples of the fresh and used catalyst were characterized by BET, TEM and XPS. The results showed that the binding energy of sulfided Ni species shifted to the low energy level indicated that the sulfided Ni species might have a reducible tendency in the catalytic run. This could be considered as a main reason of the catalysts deactivation. On the other hand, the metal agglomeration and carbon deposition and nitrides adsorption in the catalytic runs also led to the deterioration of the catalyst.

• Periodical: Advanced Materials Research (Volumes 550-553)
• Pages: 347-353
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.550-553.347
• Online since: July 2012
• Authors: Zhi Bing Shen*, Ming Ke, Pei Yu, Shi Da Liu, Zhao Zheng Song, Qing Zhe Jiang
• Keywords: Deactivation, FCC Gasoline, Mercaptan, Mo-Ni/Al₂O₃ Catalyst, Thioetherification

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