Structure Sensitivity in Catalytic Hydrogenation of Galactose and Arabinose over Ru/C Catalysts
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Structure sensitivity in hydrogenation of arabinose and galactose was studied over supported ruthenium catalysts with the cluster size ranging from 1 to 8 nm. Ruthenium on carbon supports with different ruthenium particle sizes were prepared by incipient wetness impregnation and colloidal method. Catalytic activity was seen to have almost no dependence on the substrate being, however, sensitive to the cluster size. The highest turnover frequency (TOF) was obtained with a catalyst having average ruthenium particle size of ca. 3 nm. A mathematic model incorporating cluster size dependent rate constants was used to quantitatively describe experimental data on TOF.
KeywordsArabinose Galactose Hydrogenation Ruthenium on carbon Structure sensitivity
The SusFuelCat project has received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration under grant agreement No 310490 (www.susfuelcat.eu/). The work is a part of Johan Gadolin Process Chemistry Centre (PCC), a centre of excellence financed by Åbo Akademi University.
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