| 光谱学与光谱分析 |
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| In-Situ Transient DRIFTS Studies of the Reaction Pathway of n-Butane Selective Oxidation over (VO)2P2O7 Catalysts |
| LIANG Ri-zhong1，2，LI Ying-xia1，LI Cheng-yue1，CHEN Biao-hua1 |
1. Key Lab of Education Ministry on Controlling Chemical Reaction, Beijing University of Chemical Technology, Beijing 100029, China
2. School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200072，China |
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Abstract The reaction pathway of n-butane selective oxidation to maleic anhydride (MA) over vanadium phosphorous oxide (VO)2P2O7 catalysts was systematically probed using in situ transient Diffuse Reflectance Infrared Fourier-Transform Spectroscopy (DRIFTS) in high temperature/high pressure chamber. The unsaturated and saturated noncyclic carbonyl species were determined to be intermediates in n-butane selective oxidation to MA. Furan was detected on the surface of the (VO)2P2O7 catalysts in 1-butene, 1, 3-butadiene selective oxidation. It was deduced that furan ring was cleaved to form unsaturated noncyclic carbonyl species before its conversion to MA. Based on these results and in comparison with the literature, a simplified scheme of the reaction network structure can be proposed for n-butane selective oxidation to maleic anhydride.
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Received: 2003-03-28
Accepted: 2003-06-28
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Corresponding Authors:
LIANG Ri-zhong
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| Cite this article: |
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LIANG Ri-zhong,LI Ying-xia,LI Cheng-yue, et al. In-Situ Transient DRIFTS Studies of the Reaction Pathway of n-Butane Selective Oxidation over (VO)2P2O7 Catalysts [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(11): 1309-1314.
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http://www.gpxygpfx.com/EN/Y2004/V24/I11/1309 |
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