Print Email Facebook Twitter Simultaneous hydrolysis and hydrogenation of cellobiose to sorbitol in molten salt hydrate media Title Simultaneous hydrolysis and hydrogenation of cellobiose to sorbitol in molten salt hydrate media Author Li, J. Soares, H.S.M.P. Moulijn, J.A. Makkee, M. Faculty Applied Sciences Department Chemical Engineering Date 2013-03-12 Abstract The hydrolysis and hydrogenation of cellobiose (4-O-b-D-glucopyranosyl-D-glucose) in ZnCl2_4H2O solvent was studied to optimize the conditions for conversion of lignocellulose (the most abundant renewable resource) into sorbitol (D-glucitol). Water at neutral pH does not allow hydrolysis of cellobiose under the conditions of the experiments (up to 125 1C, 4 h), but relatively fast hydrogenation of cellobiose into 3-b-D-glucopyranosyl-D-glucitol over a Ru/C catalyst in the presence of H2 takes place. In ZnCl2_4H2O hydrolysis does take place in the range of temperatures studied (75–125 1C) and simultaneously hydrogenation (H2, Ru/C), though at a lower rate than that in neutral water. Thus, a one-pot conversion of cellobiose into sorbitol is possible. The hydrolysis is the rate limiting reaction, but the selectivity to sorbitol is determined by the rate of hydrogenation. Under optimal conditions the yield of sorbitol is Z95%. The kinetic pathways are discussed. Subject Gold for GoldOpen Access To reference this document use: http://resolver.tudelft.nl/uuid:542afb49-b482-4a23-9b33-49f6a86fa19f DOI https://doi.org/10.1039/c3cy20808g Publisher RSC Publishing ISSN 2044-4753 Source Catalysis Science & Technology, 2013, 3, Part of collection Institutional Repository Document type journal article Rights (c) 2013 RSC Files PDF simultaneous.pdf 1.61 MB Close viewer /islandora/object/uuid:542afb49-b482-4a23-9b33-49f6a86fa19f/datastream/OBJ/view