In situ tuning of electronic structure of catalysts using controllable hydrogen spillover for enhanced selectivity

doi:10.1038/s41467-020-18567-6

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	In situ tuning of electronic structure of catalysts using controllable hydrogen spillover for enhanced selectivity
	Xiong, M ; Gao, Z ; Zhao, P ; Wang, GF ; Yan, WJ ; Xing, SF ; Wang, PF ; Ma, JY ; Jiang, Z ; Liu, XC
刊名	NATURE COMMUNICATIONS
	2020
卷号	11 期号:1 页码:-
关键词	FISCHER-TROPSCH SYNTHESIS ATOMIC LAYER DEPOSITION ETHYLENE EPOXIDATION PLATINUM NANOCATALYSTS OXIDE CU SPECTROSCOPY OXIDATION KINETICS
ISSN号	2041-1723
DOI	10.1038/s41467-020-18567-6
文献子类	期刊论文
英文摘要	In situ tuning of the electronic structure of active sites is a long-standing challenge. Herein, we propose a strategy by controlling the hydrogen spillover distance to in situ tune the electronic structure. The strategy is demonstrated to be feasible with the assistance of CoOx/Al2O3/Pt catalysts prepared by atomic layer deposition in which CoOx and Pt nanoparticles are separated by hollow Al2O3 nanotubes. The strength of hydrogen spillover from Pt to CoOx can be precisely tailored by varying the Al2O3 thickness. Using CoOx/Al2O3 catalyzed styrene epoxidation as an example, the CoOx/Al2O3/Pt with 7nm Al2O3 layer exhibits greatly enhanced selectivity (from 74.3% to 94.8%) when H-2 is added. The enhanced selectivity is attributed to the introduction of controllable hydrogen spillover, resulting in the reduction of CoOx during the reaction. Our method is also effective for the epoxidation of styrene derivatives. We anticipate this method is a general strategy for other reactions. In situ tuning of the electronic structure of active sites is a long-standing challenge. Here, the authors report an approach to tune the electronic structure of cobalt species during the styrene epoxidation reaction by the introduction of controllable hydrogen spillover for enhanced selectivity.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/32932]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China 2.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Shanghai Synchrotron Radiat Facil, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China 4.Chinese Acad Sci, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Xiong, M,Gao, Z,Zhao, P,et al. In situ tuning of electronic structure of catalysts using controllable hydrogen spillover for enhanced selectivity[J]. NATURE COMMUNICATIONS,2020,11(1):-.
APA	Xiong, M.,Gao, Z.,Zhao, P.,Wang, GF.,Yan, WJ.,...&Qin, Y.(2020).In situ tuning of electronic structure of catalysts using controllable hydrogen spillover for enhanced selectivity.NATURE COMMUNICATIONS,11(1),-.
MLA	Xiong, M,et al."In situ tuning of electronic structure of catalysts using controllable hydrogen spillover for enhanced selectivity".NATURE COMMUNICATIONS 11.1(2020):-.