Magnetically Separable Ru-Containing Catalyst for Conversion of Polysaccharides

A new magnetic Ru-containing catalyst based on Fe₃O₄-SiO₂ particles was suggested for hydrogenation of cellulose to glycols and for hydrolytic hydrogenation of inulin to mannite. The influence of the process parameters on the selectivity for the main products was studied. In conditionsoptimal for cellulose hydrogenolysis, the total selectivity for glycols was ca. 40 % (19.1 % for ethyleneglycol, 20.9 % for propyleneglycol) at the 100 % conversion of cellulose. In hydrolytic hydrogenation of inulin, the maximal selectivity for mannite was 44.3 % at the 100 % conversion of the initial polysaccharide. The developed catalyst is stable under hydrothermal process conditions, easily separated from the reaction mixture under the action of the external magnetic field.

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