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Mediatory role of K, Cu and Mo over Ru/SiO2 catalysts for glycerol hydrogenolysis

机译:钾,铜和钼在Ru / SiO2催化剂上对甘油氢解的中介作用

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摘要

SiO2 supported ruthenium catalysts with and without modifiers were prepared, characterized and tested for glycerol hydrogenation. Addition of K, Cu and Mo affects the reducibility and acidity of the Ru/SiO2 catalyst. Characterization data shows that Cu and Mo-modified Ru/SiO2 have stronger acidity. On the contrary, K element on a passive effect on the acidity of Ru based catalyst had been observed. A comparison with the pure Ru/SiO2 indicates the Cu-promoted specimen has better selective to the desired products, acetol, 1,2-propanedioI and ethyl glycol, although the reactivity is slightly lower.
机译:制备了带有和不带有改性剂的SiO2负载的钌催化剂,表征并测试了甘油的氢化作用。 K,Cu和Mo的添加会影响Ru / SiO2催化剂的还原性和酸度。表征数据表明,Cu和Mo改性的Ru / SiO2具有较强的酸性。相反,已经观察到K元素对Ru基催化剂的酸度具有被动作用。与纯Ru / SiO2的比较表明,尽管反应活性略低,但Cu促进的样品对所需产物丙酮醇,1,2-丙二酮和乙二醇的选择性更好。

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