Mo2C/γ-Al2O3催化剂上苯加氢反应的原位红外光谱研究

doi:10.3866/PKU.WHXB201403213

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 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

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 Mo^δ+ (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

YANG Fan, ZHANG Jing, WU Wei-Cheng. Hydrogenation Study of Benzene over a Mo₂C/γ-Al₂O₃ Catalyst by In situ IR Spectroscopy[J].Acta Phys. -Chim. Sin., 2014, 30(5): 943-949.

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

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