Correlation between Microstructure Evolution of a Well-Defined Cubic Palladium Catalyst and Selectivity during Acetylene Hydrogenation

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	Correlation between Microstructure Evolution of a Well-Defined Cubic Palladium Catalyst and Selectivity during Acetylene Hydrogenation
	Niu, Yiming; Zhang, Bingsen; Luo, Jingjie; Zhang, Liyun; Chen, Cheng-Meng; Su, Dang Sheng; Zhang, BS; Su, DS (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
刊名	WILEY-V C H VERLAG GMBH
	2017-09-22
卷号	9 期号:18 页码:3435-3439
关键词	Electron Microscopy Facets Hydrogenation Palladium Surface Structure Evolution
ISSN号	1867-3880
英文摘要	The varied surface structures of a Pd catalyst showed different catalytic performances in the partial hydrogenation of acetylene. The exposed Pd (100) facet is considered to be the most selective of all other facets for the formation of ethylene, but it is unstable and the fine structure needs to be revealed during the reaction. Herein, the evolution of the surface structure of cubic Pd nanoparticles, which are all bound with (100) facets, was studied by transmission electron microscopy in the partial hydrogenation of acetylene. Furthermore, the relation between the varying surface structure and the activity/selectivity was correlated. The (100) facets of Pd were transformed into stepped facets during the reaction, derived by adsorption/desorption of the reactants and energy compensation, which was the main reason for the decrease in the selectivity towards ethylene.; The varied surface structures of a Pd catalyst showed different catalytic performances in the partial hydrogenation of acetylene. The exposed Pd (100) facet is considered to be the most selective of all other facets for the formation of ethylene, but it is unstable and the fine structure needs to be revealed during the reaction. Herein, the evolution of the surface structure of cubic Pd nanoparticles, which are all bound with (100) facets, was studied by transmission electron microscopy in the partial hydrogenation of acetylene. Furthermore, the relation between the varying surface structure and the activity/selectivity was correlated. The (100) facets of Pd were transformed into stepped facets during the reaction, derived by adsorption/desorption of the reactants and energy compensation, which was the main reason for the decrease in the selectivity towards ethylene.
学科主题	Chemistry, Physical
语种	英语
资助机构	National Natural Science Foundation of China [91545119, 21203215]; Youth Innovation Promotion Association CAS [2015152]; Joint Foundation of Liaoning Province National Science Foundation and Shenyang National Laboratory for Materials Science [2015021011]; Chinese Academy of Sciences [XDA09030103]; CAS/SAFEA
公开日期	2018-01-10
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79087]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, BS; Su, DS (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
推荐引用方式 GB/T 7714	Niu, Yiming,Zhang, Bingsen,Luo, Jingjie,et al. Correlation between Microstructure Evolution of a Well-Defined Cubic Palladium Catalyst and Selectivity during Acetylene Hydrogenation[J]. WILEY-V C H VERLAG GMBH,2017,9(18):3435-3439.
APA	Niu, Yiming.,Zhang, Bingsen.,Luo, Jingjie.,Zhang, Liyun.,Chen, Cheng-Meng.,...&Su, DS .(2017).Correlation between Microstructure Evolution of a Well-Defined Cubic Palladium Catalyst and Selectivity during Acetylene Hydrogenation.WILEY-V C H VERLAG GMBH,9(18),3435-3439.
MLA	Niu, Yiming,et al."Correlation between Microstructure Evolution of a Well-Defined Cubic Palladium Catalyst and Selectivity during Acetylene Hydrogenation".WILEY-V C H VERLAG GMBH 9.18(2017):3435-3439.