Vanadia supported on H2O2-detemplated mesoporous SBA-15 as new effective catalysts for the oxidative dehydrogenation of propane

Xu Jie; Fan Kangnian; Chen Miao; Cao Yong; Liu Yongmei; He Heyong

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Vanadia supported on H2O2-detemplated mesoporous SBA-15 as new effective catalysts for the oxidative dehydrogenation of propane

Xu Jie,Fan Kangnian *,Chen Miao,Cao Yong #,Liu Yongmei,He Heyong

Department of Chemistry & Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University

*Correspondence author

#Submitted by

Subject:

Funding: National Natural Science Foundation of China,the National High Technology Research and Development Program of China,the Research Fund for the （No.20421303, 20473021, 20633030,2066AA03Z336,20050246071）

Opened online: 4 July 2008

Accepted by: none

Citation: Xu Jie,Fan Kangnian,Chen Miao.Vanadia supported on H2O2-detemplated mesoporous SBA-15 as new effective catalysts for the oxidative dehydrogenation of propane[OL]. [ 4 July 2008] http://en.paper.edu.cn/en_releasepaper/content/22709

Mesoporous SBA-15(H2O2) material synthesized via a controlled H2O2-based detemplation at mild conditions has been employed as new type of support to load vanadia. The ordered mesostructure of the SBA-15 host is retained as indicated by XRD and nitrogen adsorption measurements, and the surface areas of the V-SBA-15(H2O2) materials are in the range of 464-667 m2g1 comparable to 772 m2g1 for the parent SBA-15(H2O2) material. The characterization results also indicate the presence of a high abundance of surface silanol groups inside the silica pores, which can allow controlled vanadium loading up to 4.5 wt % or V coverage up to 1.01 Vnm2. In contrast with conventional calcination-derived SBA-15(C) sample the high population of the surface hydroxyl groups as well as high structural stability of the SBA-15(H2O2) material allowed a very good dispersion of the vanadia on its surface leading to high productivities of propylene during the oxidative dehydrogenation of propane.

Keywords:Vanadia; SBA-15; mesoporous materials; Oxidative dehydrogenation (ODH) of propane; Propylene; H2O2.

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