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Effects of VO x /AlMCM-41 Surface Structure on Ethylbenzene Oxydehydrogenation in the Presence of CO2

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Abstract

The behaviors of VO x /AlMCM-41 on the oxydehydrogenation of ethylbenzene into styrene in the presence of CO2 were examined, and VO x /AlMCM-41 was characterized by XRD, N2 adsorption–desorption isotherms, UV-Raman spectra and H2-TPR. The maximum styrene yield 50.6% and high styrene selectivity 96.7% were obtained over 1.0 mmol/g VO x /AlMCM-41, which suggested that the isolated and polymeric VO x species were responsible for the high activity. Styrene yield and selectivity in the presence of CO2 were higher than that in the presence of N2 because CO2 can resume the oxidative state of reduced vanadium.

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Acknowledgments

Authors are grateful for the financial support of the Natural Science Foundation of Tianjin Technology and Science Committee (09JCYBJC03000), the Natural Science Foundation of Tianjin Education Committee (20070607) and the Natural Science Foundation of China (30900092).

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Authors and Affiliations

  1. School of Materials Science and Engineering, and Tianjin Key Lab of Fiber Modification & Functional Fiber, Tianjin Polytechnic University, 300160, Tianjin, China

    Zhenhuan Li, Kunmei Su, Bowen Cheng, Dexin Shen & Yu Zhou

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  1. Zhenhuan Li
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  2. Kunmei Su
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  3. Bowen Cheng
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  4. Dexin Shen
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Correspondence to Zhenhuan Li.

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Li, Z., Su, K., Cheng, B. et al. Effects of VO x /AlMCM-41 Surface Structure on Ethylbenzene Oxydehydrogenation in the Presence of CO2 . Catal Lett 135, 135–140 (2010). https://doi.org/10.1007/s10562-009-0254-y

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  • DOI: https://doi.org/10.1007/s10562-009-0254-y

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