PdZn Intermetallic Nanostructure with Pd-Zn-Pd Ensembles for Highly Active and Chemoselective Semi-Hydrogenation of Acetylene
文献类型：期刊论文
| 作者 | Zhou, Huiran1,3; Yang, Xiaofeng1; Li, Lin1; Liu, Xiaoyan1; Huang, Yanqiang1; Pan, Xiaoli1; Wang, Aiqin1; Li, Jun2; Zhang, Tao1 |
| 刊名 | ACS CATALYSIS
 |
| 出版日期 | 2016-02-01 |
| 卷号 | 6期号:2页码:1054-1061 |
| ISSN号 | 2155-5435 |
| 关键词 | Pd-zn-pd Ensembles Pdzn Chemoselectivity Acetylene Semihydrogenation Microcalorimetry Density Functional Theory |
| DOI | 10.1021/acscatal.5b01933 |
| 文献子类 | Article |
| 英文摘要 | Intermetallic alloying of one active metal to another inert metal provides not only the improved dispersion of active centers but also a unique and homogeneous ensemble of active sites, thus offering new opportunities in a variety of reactions. Herein, we report that PdZn intermetallic nanostructure with Pd-Zn-Pd ensembles are both highly active and selective for the semihydrogenation of acetylene to ethylene, which is usually inaccessible due to the sequential hydrogenation to ethane. Microcalorimetric measurements and density functional theory calculations demonstrate that the appropriate spatial arrangement of Pd sites in the Pd-Zn-Pd ensembles of the PdZn alloy leads to the moderate sigma-bonding mode for acetylene with two neighboring Pd sites while the weak pi-bonding pattern of ethylene adsorption on the single Pd site, which facilitates the chemisorption toward acetylene and promotes the desorption of ethylene from the catalyst surface. As a result, it leads to the kinetic favor of the selective conversion of acetylene to ethylene. |
| WOS关键词 | SINGLE-ATOM CATALYSTS ; GAS SHIFT REACTION ; SELECTIVE HYDROGENATION CATALYST ; PALLADIUM CATALYSTS ; ALLOY CATALYSTS ; UNSATURATED-HYDROCARBONS ; HETEROGENEOUS CATALYSIS ; ALKYNE HYDROGENATION ; SURFACE-STRUCTURES ; SUBSURFACE CARBON |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| 出版者 | AMER CHEMICAL SOC |
| WOS记录号 | WOS:000369774900065 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/171160]  |
| 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 | Wang, Aiqin; Zhang, Tao |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, iChEM Collaborat Innovat Ctr Chem Energy Mat, Dalian 116023, Peoples R China 2.Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Huiran,Yang, Xiaofeng,Li, Lin,et al. PdZn Intermetallic Nanostructure with Pd-Zn-Pd Ensembles for Highly Active and Chemoselective Semi-Hydrogenation of Acetylene[J]. ACS CATALYSIS,2016,6(2):1054-1061. |
| APA | Zhou, Huiran.,Yang, Xiaofeng.,Li, Lin.,Liu, Xiaoyan.,Huang, Yanqiang.,...&Zhang, Tao.(2016).PdZn Intermetallic Nanostructure with Pd-Zn-Pd Ensembles for Highly Active and Chemoselective Semi-Hydrogenation of Acetylene.ACS CATALYSIS,6(2),1054-1061. |
| MLA | Zhou, Huiran,et al."PdZn Intermetallic Nanostructure with Pd-Zn-Pd Ensembles for Highly Active and Chemoselective Semi-Hydrogenation of Acetylene".ACS CATALYSIS 6.2(2016):1054-1061. |
入库方式： OAI收割
来源：大连化学物理研究所
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