US-Federal Republic of Germany Cooperative Research: Supported Metal Catalysts with Unique Structures Derived from Molecular Metal Clusters

美德合作研究：具有源自金属分子簇的独特结构的负载型金属催化剂

• 批准号: 8815553
• 负责人: Bruce Gates
• 金额: $ 1.2万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-02-15 至 1992-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8815553&HistoricalAwards=false
• 关键词: US; Federal; Republic; Germany; Cooperative

This award supports Dr. Bruce C. Gates of the Center for Catalytic Science and Technology, University of Delaware, to collaborate in research with Dr. Helmut Knoezinger of the Institute for Physical Chemistry, University of Munich, FRG. They share an interest in catalysis and surface chemistry, and are collaborating in a study of new classes of metal catalysts prepared from organometallic precursors on basic metal oxide supports. The precursors they are using include rhenium, rhodium, osmium, iridium and platinum. The supports include magnesium oxide, lanthanum oxide and calcium oxide. The catalysts include ensembles of mononuclear complexes, robust anionic metal clusters, and metal aggregates with unique nuclearities formed by removal of ligands from molecular metal clusters. After preparing a variety of supported catalysts, they will determine their structures and characterize the reactivities of surface bound clusters. They will also experimentally determine their catalytic activities, selectivities and stabilities for industrially important test reactions. The work will be shared based on the complementary expertise and facilities of the two research groups. Dr. Knoezinger has expertise in surface physical chemistry and spectroscopy and Dr. Gates has worked more with surface organometallic synthesis and detailed characterization of catalyst performance using flow-reactor techniques. Therefore, the catalysts will be prepared in Delaware and the analyses and experimental testing will be done in both laboratories, depending on where the appropriate equipment and available manpower is located. This research will advance fundamental understanding of the structures and catalytic activities of metal oxide-supported metal catalysts having molecular structures. It may also elucidate the role of molecular metal clusters in what have heretofore been considered conventional supported metal catalysts. By making the connection between molecular metal complex catalysts and cluster catalysts and conventional supported metal catalysts, it will point the way to possible exploitation of the molecular precursors in the preparation of novel catalytic materials.

这个奖项支持博士布鲁斯C。催化中心的大门 科学和技术，特拉华州大学，合作， 与物理研究所的赫尔穆特·克诺辛格博士一起进行的研究 德国慕尼黑大学化学系。 他们共同的兴趣是 催化和表面化学，并正在合作研究 由有机金属制备的新型金属催化剂 在碱性金属氧化物载体上的前体。 它们的前身 使用的包括铱、铑、锇、铱和铂。 的 载体包括氧化镁、氧化镧和氧化钙。 催化剂包括单核络合物的集合体， 阴离子金属簇和具有独特核性的金属聚集体 通过从分子金属簇中除去配体而形成。 后 制备各种负载型催化剂，他们将确定其 结构和表征表面结合的反应性 集群 他们还将通过实验确定其催化性能。 活性、选择性和稳定性， 测试反应。 工作将根据互补性进行共享 两个研究小组的专业知识和设施。 克诺辛格博士 拥有表面物理化学和光谱学方面的专业知识。 盖茨在表面有机金属合成方面的工作更多， 使用流动反应器的催化剂性能的详细表征 技术. 因此，催化剂将在特拉华州制备 分析和实验测试将在两个 实验室，取决于适当的设备和 可用的人力资源。 这项研究将促进对 金属氧化物负载金属的结构与催化活性 具有分子结构的催化剂。 它还可以阐明 分子金属簇在迄今为止 认为是常规的负载型金属催化剂。 通过使 分子金属配合物催化剂与簇合物的连接 催化剂和传统的负载型金属催化剂，它将指出 可能开发的分子前体的方式， 新型催化材料的制备。