Synthesis of Pt-Cu/SiO2 catalysts with different structures and their application in hydrodechlorination of 1,2-dichloroethane

	Synthesis of Pt-Cu/SiO2 catalysts with different structures and their application in hydrodechlorination of 1,2-dichloroethane
	Wei, Xing 1,2; Wang, Ai-Qin 1; Yang, Xiao-Feng 1; Li, Lin 1; Zhang, Tao 1
刊名	applied catalysis b-environmental
	2012-06-13
卷号	121 页码:105-114
关键词	Platinum Copper Hydrodechlorination Bimetallic Dichloroethane
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.
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
收录类别	SCI
语种	英语
WOS记录号	WOS:000305502200012
公开日期	2015-11-10
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/138019]
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
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
推荐引用方式 GB/T 7714	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.