Abstract
Ru/SBA-15 catalysts were prepared by impregnation and were pretreated under different conditions, and were characterized by N 2 adsorption-desorption, X-ray diffraction, CO chemisorption, transmission electron microscopy, and the reaction of glycerol hydrogenolysis. The catalyst calcined in air had larger Ru particles, while the direct reduction of the catalysts with H 2 without air pre-calcination made the Ru particles dispersed well. As the H 2 reduction temperature increased, the Ru dispersion decreased. The turnover frequency (TOF) of the catalysts increased as the Ru dispersion decreased, indicating that Ru/SBA-15 catalyzed glycerol hydrogenolysis is a structure sensitive reaction. Different treatment conditions gave Ru/SBA-15 catalysts with different Ru particle size, and they showed that glycerol hydrogenolysis over Ru/SBA-15 is a structure sensitive reaction.
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