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Mediatory role of K, Cu and Mo over Ru/SiO2 catalysts for glycerol hydrogenolysis
Xiaoyuan Liao,Kewen Li,Xiaomin Xiang,Sheng-Guang Wang,Xichun She,Yulei Zhu,Yongwang Li 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.2
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/SiO2catalyst. 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-propanediol and ethyl glycol, although the reactivity is slightly lower.