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Capping experiments reveal multiple surface active sites in CeO2 and their cooperative catalysis

文献类型：期刊论文

作者Ren, Xiaoning1; Zhang, Zhixin2; Wang, Yehong2; Lu, Jianmin2; An, Jinghua2; Zhang, Jian2; Wang, Min1; Wang, Xinkui1; Luo, Yi1
刊名RSC ADVANCES
出版日期2019-05-19
卷号9期号:27页码:15229-15237
ISSN号2046-2069
DOI10.1039/c9ra02353d
通讯作者Zhang, Zhixin(zhangzhixin@dicp.ac.cn)
英文摘要Understanding of surface active sites (SAS) of CeO2 is crucial to its catalytic applications. In the present study, we have employed capping experiments, DFT calculations, and spectroscopic characterization to study pristine CeO2 catalyst. We find that multiple SAS coexist on the CeO2 surface: oxygen vacancies as redox sites and the coordinately unsaturated Ce cations near the oxygen vacancies and the neighboring oxygen ions as Lewis acid-base sites. Dimethylsulfoxide (DMSO), pyridine, and benzoic acid are utilized to cap the redox sites, Lewis acid sites, and base sites, respectively. Selective capping on the redox site does not have much effect on the acid-base catalysis, and vice versa, indicating the distinct surface proximity and independent catalysis of these SAS. We draw attention to a relationship between the well-known redox sites and the surface Lewis acid and Lewis base pairs on CeO2 surface, which are responsible for driving various heterogeneous catalytic reactions.
WOS关键词CORE-SHELL NANOPARTICLES ; OXIDATIVE DEHYDROGENATION ; LOW-TEMPERATURE ; ACID-BASE ; CERIA ; METHANOL ; OXIDE ; IR ; ALCOHOLS ; PYRIDINE
资助项目National Natural Science Foundation of China[21706250] ; National Natural Science Foundation of China[21711530020] ; National Natural Science Foundation of China[21721004] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB17000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB17020300] ; Department of Science and Technology of Dalian[2017RQ114]
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000470161800013
出版者ROYAL SOC CHEMISTRY
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Department of Science and Technology of Dalian ; Department of Science and Technology of Dalian ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Department of Science and Technology of Dalian ; Department of Science and Technology of Dalian ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Department of Science and Technology of Dalian ; Department of Science and Technology of Dalian ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Department of Science and Technology of Dalian ; Department of Science and Technology of Dalian
源URL[http://cas-ir.dicp.ac.cn/handle/321008/171994]  
专题大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者Zhang, Zhixin
作者单位1.Dalian Univ Technol, Sch Chem, State Key Lab Fine Chem, Dalian 116024, Liaoning, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China
推荐引用方式
GB/T 7714		 Ren, Xiaoning,Zhang, Zhixin,Wang, Yehong,et al. Capping experiments reveal multiple surface active sites in CeO2 and their cooperative catalysis[J]. RSC ADVANCES,2019,9(27):15229-15237.
APA Ren, Xiaoning.,Zhang, Zhixin.,Wang, Yehong.,Lu, Jianmin.,An, Jinghua.,...&Luo, Yi.(2019).Capping experiments reveal multiple surface active sites in CeO2 and their cooperative catalysis.RSC ADVANCES,9(27),15229-15237.
MLA Ren, Xiaoning,et al."Capping experiments reveal multiple surface active sites in CeO2 and their cooperative catalysis".RSC ADVANCES 9.27(2019):15229-15237.

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来源：大连化学物理研究所

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