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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.
In this paper, three kinds of Ruthenium cluster compounds [HRu_3 (CO) _ (11)] ~, Ru_6C (CO) _17 and [Ru_3 (CO) _9 (CCO) Three kinds of SiO_2 supported ruthenium catalysts were prepared and their catalytic activities in the CO hydrogenation reaction were studied.The results showed that compared with the catalyst prepared with [HRu_3 (CO) _ (11)] ~ Ru_3 (CO) _9 (CCO)] ~ (2-) showed high activity in the CO hydrogenation reaction.Through comparing the catalytic behavior of the above three catalysts with the characterization of the infrared and mass spectra, we initially proposed On catalysts prepared with [Ru_3 (CO) _9 (CCO)] ~ (2-), the CCO groups may be converted to Carbides by decarbonylation, which is an intermediate for the formation of hydrocarbon products.