Synthesis of mesoporous Co/Ce-SBA-15 materials and their catalytic performance in the catalytic oxidation of benzene
Date
2008
Authors
Mu, Z.
Li, J.
Tian, H.
Hao, Z.
Qiao, S.
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Materials Research Bulletin, 2008; 43(10):2599-2606
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Zhen Mu, Jin Jun Li, Hua Tian, Zheng Ping Hao, Shi Zhang Qiao
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Abstract
Cerium-containing SBA-15 mesoporous materials, with different Ce/Si molar ratios, were synthesized by a direct hydrothermal synthesis method and further modified by impregnation with 10, 15 and 20 wt.% Co. Characterizations by powder X-ray diffraction (XRD), N<inf>2</inf> sorption, inductively coupled plasma (ICP) and UV-vis spectroscopy were carried out. The small-angle XRD and N<inf>2</inf> sorption characterizations showed that these Co supported materials have less-ordered mesoporous structures with partial blockage of pores, and their specific surface area, pore volume and pore size were relatively lower than those of unsupported cerium-containing SBA-15. Spinel Co<inf>3</inf>O<inf>4</inf> constituted the predominant cobalt phase in the prepared catalysts, and CeO<inf>2</inf> was also detected. All the Co supported catalysts exhibited high catalytic activity in the oxidation of benzene. © 2007 Elsevier Ltd. All rights reserved.
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© 2007 Elsevier Ltd. All rights reserved.