Acta Phys. -Chim. Sin. ›› 2014, Vol. 30 ›› Issue (5): 943-949.doi: 10.3866/PKU.WHXB201403213

• CATALYSIS AND SURFACE SCIENCE • Previous Articles     Next Articles

Hydrogenation Study of Benzene over a Mo2C/γ-Al2O3 Catalyst by In situ IR Spectroscopy

YANG Fan1, ZHANG Jing2, WU Wei-Cheng2   

  1. 1 College of Petroleum Engineering, Liaoning Shihua University, Fushun 113001, Liaoning Province, P. R. China;
    2 School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, Liaoning Province, P. R. China
  • Received:2014-02-10 Revised:2014-03-20 Published:2014-04-25
  • Contact: ZHANG Jing, WU Wei-Cheng E-mail:jingzhang_dicp@aliyun.com;weichengwu@live.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20903054).

Abstract:

Passivated, reduced passivated, and fresh Mo2C/γ-Al2O3 catalysts were prepared by temperatureprogrammed reactions with a CH4/H2 gas mixture. The results of in situ infrared (IR) analysis revealed that the fresh Mo2C/γ-Al2O3 catalyst displayed the highest level of activity at room temperature, with cyclohexane being detected as the only product. The activity of molybdenum carbide in this reaction was comparable to that of the noble metals. The results from the in situ IR spectra for CO adsorbed onto the fresh Mo2C/γ-Al2O3 catalyst before and after the hydrogenation of benzene showed that Mo2C was active for the hydrotreating processes and Moδ+ (0<δ<2) was the active center for the hydrogenation of benzene. The activities of the three different catalysts for the hydrogenation of benzene were studied, and the results revealed that fresh Mo2C/γ-Al2O3 was the most active catalyst.

Key words: In situ IR spectroscopy, Hydrogenation of benzene, Mo2C/γ-Al2O3, CO adsorption, Active center

MSC2000: 

  • O643