Carbon Monoxide Promotes the Catalytic Hydrogenation on Metal Cluster Catalysts

作     者：Ruixuan Qin Pei Wang Pengxin Liu Shiguang Mo Yue Gong Liting Ren Chaofa Xu Kunlong Liu Lin Gu Gang Fu Nanfeng Zheng 

作者机构：State Key Laboratory for Physical Chemistry of Solid SurfacesCollaborative Innovation Center of Chemistry for Energy Materialsand National&Local Joint Engineering Research Center for Preparation Technology of NanomaterialsCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China College of ScienceHuazhong Agricultural UniversityWuhan 430070China Institute of PhysicsChinese Academy of SciencesBeijing 100190China 

出 版 物：《Research》 (研究（英文）)

年 卷 期：2020年第2020卷第1期

页      面：702-710页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：the National Key R&D Program of China(2017YFA0207304 and 2017YFA0207303) the NNSF of China(21890752,21731005,21721001,21573178,and 91845102) the Fundamental Research Funds for the Central Universities(20720180026)for financial support 

主　　题：reaction. hydrogenation introducing 

摘      要：Size effect plays a crucial role in catalytic *** highly dispersed ultrasmall clusters with a limited number of metal atoms are one candidate of the next generation catalysts that bridge the single-atom metal catalysts and metal ***,for the unfavorable electronic property and their interaction with the substrates,they usually exhibit sluggish *** advantage of the small size,their catalytic property would be mediated by surface binding *** combination of metal cluster coordination chemistry brings new *** poisoning is notorious for Pt group metal catalysts as the strong adsorption of CO would block the active *** this work,we will demonstrate that CO could serve as a promoter for the catalytic hydrogenation when ultrasmall Pd clusters are *** means of DFT calculations,we show that Pd_(n)(n=2-147)clusters display sluggish activity for hydrogenation due to the too strong binding of hydrogen atom and reaction intermediates thereon,whereas introducing CO would reduce the binding energies of vicinal sites,thus enhancing the hydrogenation ***,supported Pd_(2)CO catalysts are fabricated by depositing preestablished[Pd_(2)(μ-CO)_(2)Cl_(4)]2-clusters on oxides and demonstrated as an outstanding catalyst for the hydrogenation of *** promoting effect of CO is further verified experimentally by removing and reintroducing a proper amount of CO on the Pd cluster catalysts.