期刊
SCIENCE
卷 337, 期 6095, 页码 713-717出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1222887
关键词
-
资金
- University of Trieste through FRA
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM)
- Air Force Office of Scientific Research (Multidisciplinary University Research Initiative) [FA9550-08-1-0309]
- Ministry of Science and Innovation of Spain [CSD2009-00013]
There is a critical need for improved methane-oxidation catalysts to both reduce emissions of methane, a greenhouse gas, and improve the performance of gas turbines. However, materials that are currently available either have low activity below 400 degrees C or are unstable at higher temperatures. Here, we describe a supramolecular approach in which single units composed of a palladium (Pd) core and a ceria (CeO2) shell are preorganized in solution and then homogeneously deposited onto a modified hydrophobic alumina. Electron microscopy and other structural methods revealed that the Pd cores remained isolated even after heating the catalyst to 850 degrees C. Enhanced metal-support interactions led to exceptionally high methane oxidation, with complete conversion below 400 degrees C and outstanding thermal stability under demanding conditions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据