Well-defined Supported Metal Catalysts Synthesized From Organometallics

金属羰基前体用于合成结构上 独特的氧化物负载的有机金属和金属催化剂 包括稳定分子金属簇的强类似物 阴离子和由它们形成的金属聚集体， 羰基配体。 努力集中在锇，铱， 和氧化镁载体上的铂。 结构和稳定性 的负载物种的特征。 越稳定 测试这些聚集体的催化活性。 这项努力旨在弥合金属之间的差距 络合物和配位簇行为（络合物的一个分支） 化学与大量的文献）和行为的 负载型金属催化剂（工业上优选的类型 应用）。 这应该会提高我们对 催化剂对金属结构和金属载体敏感性 互动，并成为一个重大的进步，在设计的实际 催化剂的

Metal carbonyl precursors are used to synthesize structurally unique oxide-supported organometallic and metallic catalysts including robust analogues of stable molecular metal-cluster anions and metal aggregates formed from them by removal of the carbonyl ligands. The effort concentrates on osmium, iridium, and platinum on magnesia support. Structures and stabilities of the supported species are characterized. The more stable of these aggregates are tested for catalytic activity. This effort is designed to bridge the gap between metal complexes and coordination cluster behavior (a branch of chemistry with a voluminous literature) and the behavior of supported metal catalysts (the type preferred in industrial applications). This should improve our understanding of the sensitivity of catalysis to metal structure and metal-support interactions and be a major advance in the design of practical catalysts.