Surface Organometallic Chemistry——Surface Supported Triruthenium Ketenylidene Clusters and Their Performance in ~(13)CO Isotopic Exchange and Alkylation Reactions

Recently, metal clusters supported on some solids which simultaneously exhibit many excellent properties of both metal clusters and supports have been intensively studled. Such surface organometallic chemistry, which concerns the synthesis, structure, reactivity and catalytic activity of surface-supported organometallfc compounds is a new     

表面金属有机化学Ⅱ—SiO_2担载的三钌乙烯酮原子簇化合物[PPN]_2[Ru_3(CO)_9(CCO)]在CO加氢反应中的催化行为

本文分别通过三种不同的钌原子簇化合物[HRu_3(CO)_(11)]~-、Ru_6C(CO)_(17)和[Ru_3(CO)_9(CCO)~(2-)]制备了三种SiO_2担载型的钌催化剂,并研究了它们在CO加氢反应中的催化行为.结果表明,若和用[HRu_3(CO)_(11)]~-制备的催化剂相比较,用[Ru_3(CO)_9(CCO)]~(2-)制备的催化剂在CO加氢反应中显示了较高的活性.通过比较以上三种催化剂的催化行为以及所进行的红外和质谱表征,初步提出了用[Ru_3(CO)_9(CCO)]~(2-) 制备的催化剂上,CCO基团经脱羰基后可能转化成表面碳化物(Carbide),它是形成烃类产物的中间体.