Subject Area物理化学
Interface Tuning of Monolayer Oxide Film for Catalytic Oxidation
Li WX(李微雪); Wei-Xue Li
Conference NameFirst Sino-German Workshop “Frontiers in Catalysis”
Conference Date2010-6-6
Conference Place中国
Funding Organization中科院大连化学物理研究所
AbstractMonolayer oxide films supported on metal substrates receives a great effort recently because of its wide implication as a model system in heterogeneous catalysis, microelectronics and magnetics etc. Particularly, the interfacial interaction between the oxide films and the metal substrates as well as their interplay (structurally and electronically) offers an excellent playground tuning the activity and selectivity for better catalysts. The interface tuning of FeO monolayer oxide on transition metal (Pt(111) and Ru(0001)) for catalytic oxidation will be illustrated in this talk. First, we will show that the strong interfacial adhesion between FeO and Pt(111) could be utilized to stabilize the coordinately unsaturated ferrous (CUF) center. The interface confined CUF sites together with the metal supports are active for O2 activation, and highly selective for the oxidation of carbon monoxide in the presence of hydrogen, which is one of the crucial reactions for PEM fuel cell applications. Secondly, adsorption of the metal adatoms on FeO/Ru(0001) in the presence of CO will be discussed. We find that the adsorption of the metal adatoms is very selective and metal dependent. Moreover, in the presence of CO, the preferential sites of the metal adatom may change. The implication of these results for the catalysis under the realistic conditions will be highlighted.
Document Type会议论文
Corresponding AuthorWei-Xue Li
Recommended Citation
GB/T 7714
Li WX,Wei-Xue Li. Interface Tuning of Monolayer Oxide Film for Catalytic Oxidation[C],2010:24/2.
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