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Synthesis of Pt-Cu/SiO2 catalysts with different structures and their application in hydrodechlorination of 1,2-dichloroethane
Wei, Xing1,2; Wang, Ai-Qin1; Yang, Xiao-Feng1; Li, Lin1; Zhang, Tao1
关键词Platinum Copper Hydrodechlorination Bimetallic Dichloroethane
刊名APPLIED CATALYSIS B-ENVIRONMENTAL
2012-06-13
DOI10.1016/j.apcatb.2012.03.020
121页:105-114
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]COGELLED XEROGEL CATALYSTS ; SOL-GEL CATALYSTS ; SUPPORTED PD-CU ; ALLOY NANOPARTICLES ; SELECTIVE HYDRODECHLORINATION ; CO OXIDATION ; BIMETALLIC CATALYSTS ; PT-CU/C ; DECHLORINATION ; PALLADIUM
英文摘要Pt-Cu/SiO2 catalysts with different structures and chemical compositions were prepared using a two-step method. For the series of PtxCu100-x/SiO2 catalysts, Pt was deposited in the first step with H-2 PtCl6 as the precursor and Cu was deposited subsequently with Cu(NH3)(4)(2+) as the precursor. For the Cu100-xPtx/SiO2 catalyst, the deposition sequence was reversed accompanied with galvanic displacement of Cu-0 by Pt4+. All the samples were characterized by XRD, TEM, H-2-TPR, H-2 chemisorption. and DRIFT of CO adsorption, and evaluated for the catalytic hydrodechlorination of 1,2-dichloroethane. The results show that the PtxCu100-x/SiO2 catalysts exhibit core-shell structures with Pt-rich alloy cores and Cu-rich alloy shells, while the Cu100-xPtx/SiO2 catalyst shows a Pt-Cu alloy core and a Pt rich alloy shell. Different structures and chemical compositions lead to quite different performances in catalyzing the hydrodechlorination of 1,2-dichloroethane. The Pt16Cu84/SiO2 catalyst gave a high selectivity to ethylene over 90% and an excellent stability over 18 h run due to the Cu-rich shell structure, while the Cu44Pt56/SiO2 catalyst produced predominantly ethane due to the Pt rich shell. (c) 2012 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000305502200012
引用统计
被引频次:16[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/321008/138019
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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Wei, Xing,Wang, Ai-Qin,Yang, Xiao-Feng,et al. Synthesis of Pt-Cu/SiO2 catalysts with different structures and their application in hydrodechlorination of 1,2-dichloroethane[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2012,121:105-114.
APA Wei, Xing,Wang, Ai-Qin,Yang, Xiao-Feng,Li, Lin,&Zhang, Tao.(2012).Synthesis of Pt-Cu/SiO2 catalysts with different structures and their application in hydrodechlorination of 1,2-dichloroethane.APPLIED CATALYSIS B-ENVIRONMENTAL,121,105-114.
MLA Wei, Xing,et al."Synthesis of Pt-Cu/SiO2 catalysts with different structures and their application in hydrodechlorination of 1,2-dichloroethane".APPLIED CATALYSIS B-ENVIRONMENTAL 121(2012):105-114.
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