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Isolation of Pd atoms by Cu for semi-hydrogenation of acetylene: Effects of Cu loading
Pei, Guangxian1,2; Liu, Xiaoyan1; Chai, Mengqian1,2; Wang, Aiqin1; Zhang, Tao1
关键词Copper Palladium Single-atom Catalyst X-ray Absorption Spectroscopy Acetylene Hydrogenation Excess Ethylene
刊名CHINESE JOURNAL OF CATALYSIS
2017-09-01
DOI10.1016/S1872-2067(17)62847-X
38期:9页:1540-1548
收录类别SCI ; ISTP
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]SINGLE-ATOM ; SELECTIVE HYDROGENATION ; EXCESS ETHYLENE ; CO OXIDATION ; CATALYSTS ; PERFORMANCE ; AG ; NITROARENES ; EFFICIENT ; REACTOR
英文摘要Cu-alloyed Pd single-atom catalysts exhibit excellent catalytic performance for the semi-hydrogenation of acetylene; however, the limit of the Cu/Pd atomic ratio for forming the alloyed Pd single-atom catalyst is ambiguous. Herein, silica-supported Cu-Pd bimetallic catalysts with fixed Pd content and varied Cu loadings were synthesized using an incipient wetness co-impregnation method. The X-ray absorption spectroscopy results indicated that Pd formed an alloy with Cu after reduction at 250 degrees C and that the Pd atoms were completely isolated by Cu for Cu/Pd atomic ratios 40/1. Notably, increasing the reduction temperature from 250 to 400 degrees C hardly affected the catalytic performances of the Cu-Pd/SiO2 catalysts. This finding can be attributed to the similar chemical environments of Pd demonstrated by the X-ray absorption spectroscopy results. (C) 2017, Dalian Institute of Chemical Physics, Chinese Academy of Sciences.
语种英语
WOS记录号WOS:000411423600013
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被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/150065
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, State Key Lab Catalysis, Collaborat Innovat Ctr Chem Energy Mat iChEM, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Pei, Guangxian,Liu, Xiaoyan,Chai, Mengqian,et al. Isolation of Pd atoms by Cu for semi-hydrogenation of acetylene: Effects of Cu loading[J]. CHINESE JOURNAL OF CATALYSIS,2017,38(9):1540-1548.
APA Pei, Guangxian,Liu, Xiaoyan,Chai, Mengqian,Wang, Aiqin,&Zhang, Tao.(2017).Isolation of Pd atoms by Cu for semi-hydrogenation of acetylene: Effects of Cu loading.CHINESE JOURNAL OF CATALYSIS,38(9),1540-1548.
MLA Pei, Guangxian,et al."Isolation of Pd atoms by Cu for semi-hydrogenation of acetylene: Effects of Cu loading".CHINESE JOURNAL OF CATALYSIS 38.9(2017):1540-1548.
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