U.S.-Japan Cooperative Research: An Approach to Tailored Metal Catalysts Involving Single and Multi-Metal Surface Sites

该奖项为一个为期两年的合作社提供支持 关于金属催化剂的项目， 化学工程，特拉华州大学，由 布鲁斯·C·盖茨教授和一个来自 化学，日本东京大学，由教授领导 岩泽康弘 金属是最重要的 技术中使用的催化剂，以及 实际上使用的催化剂由小金属颗粒组成 分散在高面积的支撑物上。 然而，这些金属 性质不统一，因此难以理解 完全地该项目将涉及两个 金属研究的补充方法 催化剂由美国和日本的团队开发，即 单晶表面科学的方法，和表面 有机金属化学方法。 催化剂将 研究将从几个前体上的单一 MgO和Mg的晶体与几层氧。 这些 然后催化剂将转化为α-亚羰基， 旨在是孤立的单核细胞群，对这些 这三个群体的组合，分别是。 最后，样品将被处理以去除羰基 配体和还原金属与最小扰动的 核。 每个阶段的结构都将被描述 使用包括扫描隧道的许多物理方法 显微镜、红外光谱和超真空 技术. 盖茨教授和岩泽教授都高度重视 有能力的科学家，以创新者而闻名， 催化剂设计和制备。 这个项目应该会产生 精确的结构信息， 分散的金属实体以及金属载体 接口，并希望结果将证明 结构与催化性能的关系 这些材料。

This award provides support for a two year cooperative project on metal catalysts, between a group from Department of Chemical Engineering, University of Delaware, lead by Professor Bruce C Gates and a group from the Department of Chemistry, University of Tokyo, Japan, lead by Professor Yasuhiro Iwasawa. Metals are some of the most important catalysts used in technology, and the common form of the catalyst used in practice consists of small metal particles dispersed on a high-area support. These metals, however, are non-uniform in nature and therefore difficult to understand fully. This project will involve the bringing together of two complementary approaches to the investigation of metal catalysts developed by the teams in the US and Japan, namely the single-crystal surface science approach, and the surface organometallic chemistry approach. The catalysts to be studied will be made from several precursors on single crystals of MgO and Mg with a few layers of oxygen. These catalysts will then be converted to rhenium subcarbonyls, intended to be isolated mononuclear groups, pairs of these groups, and ensembles of three of these groups, respectively. Finally the samples will be treated to remove the carbonyl ligands and reduce the metal with minimum perturbation of the nuclearity. The structures at each stage will be characterized using a number of physical methods including scanning tunnel microscopy, infrared spectroscopy and ultrahigh vacuum techniques. Both Professor Gates and Professor Iwasawa are highly competent scientists with reputations for being innovators in catalyst design and preparation. This project should yield precise structural information characterizing the highly dispersed metal entities, as well as the metal support interface, and hopefully the results will demonstrate the relationship between the structure and catalytic properties of these materials.