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

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

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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

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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.

Keywords: In situ IR spectroscopy Hydrogenation of benzene Mo₂C/γ-Al₂O₃ CO adsorption Active center
Received: 2014-02-10 Accepted: 2014-03-20 Publication Date (Web): 2014-03-21
Corresponding Authors: ZHANG Jing, WU Wei-Cheng Email: jingzhang_dicp@aliyun.com;weichengwu@live.cn

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

Cite this article: 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. doi: 10.3866/PKU.WHXB201403213

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