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论文类型：期刊论文

第一作者：Wang, Tehua

通讯作者：Ji, M (reprint author), Dalian Univ Technol, Fac Chem Environm & Biol Sci & Technol, Coll Chem, Dalian 116023, Peoples R China.; Lu, HY (reprint author), Dalian Med Univ, Affiliat Hosp 2, Dept Pharm, Dalian 116027, Peoples R China.

合写作者：Guan, Xiaolin,Lu, Huiyi,Liu, Zhongwen,Ji, Min

发表时间：2017-03-15

发表刊物：APPLIED SURFACE SCIENCE

收录刊物：SCIE、EI

卷号：398

页面范围：1-8

ISSN号：0169-4332

关键字：Nanoflake-assembled alumina; Ceria-zirconia; Ethylbenzene; Dehydrogenation; Carbon dioxide

摘要：An Al2O3 material assembled by nanoflakes was used to prepare supported CeO2-ZrO2 catalyst via a deposition-precipitation method for oxidative dehydrogenation of ethylbenzene with CO2. Both unsupported and commercial Al2O3-supported CeO2-ZrO2 were prepared for comparison. It was found that the CeO2-ZrO2/nanoflake-assembled Al2O3 catalyst exhibited the best catalytic activity. The characterization results revealed that the slit-shape pores existing in nanoflake-assembled Al2O3 were responsible for the small particle size and high Ce/Zr surface ratio of supported CeO2-ZrO2 species. The dispersion of Ce1-xZrx(OH)(4) precursors onto Al2O3 support surface during the deposition-precipitation process was proposed. The high dispersion and large numbers of surface oxygen vacancies of the CeO2-ZrO2 species on nanoflake-assembled Al2O3 contributed to the excellent catalytic performance in oxidative dehydrogenation of ethylbenzene with CO2. This kind of special Al2O3 is expected to be a promising support for preparing highly dispersed metal/metal oxide catalysts. (C) 2016 Elsevier B.V. All rights reserved.