气候变化领域集成服务门户(CCPortal): Activation of surface lattice oxygen in single-atom Pt/CeO2 for low-temperature CO oxidation

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DOI	10.1126/science.aao2109
	Activation of surface lattice oxygen in single-atom Pt/CeO2 for low-temperature CO oxidation
	Nie L.; Mei D.; Xiong H.; Peng B.; Ren Z.; Hernandez X.I.P.; DeLaRiva A.; Wang M.; Engelhard M.H.; Kovarik L.; Datye A.K.; Wang Y.
发表日期	2017
ISSN	0036-8075
起始页码	1419
结束页码	1423
卷号	358 期号:6369
英文摘要	To improve fuel efficiency, advanced combustion engines are being designed to minimize the amount of heat wasted in the exhaust. Hence, future generations of catalysts must perform at temperatures that are 100°C lower than current exhaust-treatment catalysts. Achieving low-temperature activity, while surviving the harsh conditions encountered at high engine loads, remains a formidable challenge. In this study, we demonstrate how atomically dispersed ionic platinum (Pt2+) on ceria (CeO2), which is already thermally stable, can be activated via steam treatment (at 750°C) to simultaneously achieve the goals of low-temperature carbon monoxide (CO) oxidation activity while providing outstanding hydrothermal stability. A new type of active site is created on CeO2 in the vicinity of Pt2+, which provides the improved reactivity. These active sites are stable up to 800°C in oxidizing environments.
英文关键词	carbon monoxide; cerium oxide; oxygen; platinum; activation energy; carbon monoxide; catalyst; combustion; hydrothermal activity; lattice dynamics; low temperature; oxidation; oxide group; platinum; Article; atom; catalysis; catalyst; chemical structure; dispersion; environment; low temperature; oxidation; priority journal; thermostability
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244880
作者单位	Institute for Integrated Catalysis and Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Post Office Box 999, Richland, WA 99352, United States; Department of Chemical and Biological Engineering, Center for Micro-Engineered Materials, University of New Mexico, Albuquerque, NM 87131, United States; State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing, 100029, China; Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA 99164, United States
推荐引用方式 GB/T 7714	Nie L.,Mei D.,Xiong H.,et al. Activation of surface lattice oxygen in single-atom Pt/CeO2 for low-temperature CO oxidation[J],2017,358(6369).
APA	Nie L..,Mei D..,Xiong H..,Peng B..,Ren Z..,...&Wang Y..(2017).Activation of surface lattice oxygen in single-atom Pt/CeO2 for low-temperature CO oxidation.Science,358(6369).
MLA	Nie L.,et al."Activation of surface lattice oxygen in single-atom Pt/CeO2 for low-temperature CO oxidation".Science 358.6369(2017).