Development of Bifunctional Ru-Containing Catalysts for One-Pot Hydrolysis-Hydrogenation of Cellulose to Sorbitol
Renewable Plant Resources "Chemistry, Technology, Medicine"
18-22 Sep 2017
|| Medvedeva Tatiana Borisovna
, Gromov Nikolay V.
, Taran Oxana Pavlovna
, Timofeeva Mariya Nikolaevna
, Parmon Valentin Nikolaevich
Boreskov Institute of Catalysis SB RAS
Novosibirsk State Technical University
Novosibirsk State University
Sorbitol is a chemical widely used in food and pharmaceuticals industry. It is a promising platform molecule for valuable chemicals (isosorbit, sorbitan, propylene and ethylene glycols, glycerol, lactic acid). Perspective way of obtaining this polyol is one-pot hydrolysis-hydrogenation of inedible cellulose, which is main a polysaccharide component of renewable lignocellulose biomass (up to 70 %). Two sequential catalytic steps (hydrolysis and reduction) must be applied to obtain sorbitol from cellulose. Heteropoly acids (HPAs) and cesium salts of HPA (CsHPAs) seem to be perspective acid catalysts for hydrolysis of polysaccharide to get glucose. Insoluble hot water ZrO2 and Nb2O5 oxides are also able to catalyze for hydrolysis processes efficiently. One of the most promising catalysts for the reduction of glucose to sorbitol is ruthenium.
The aim of the study was the development of the bifunctional Ru/CsHPAs, Ru/HPA/ZrO2 and Ru/HPA/Nb2O5 catalysts for the one-pot conversion of cellulose to sorbitol and investigation of the influence of support type and Ru content on catalytic activity.