Next Article in Journal
The Role of SO3 Poisoning in CU/SSZ-13 NH3-SCR Catalysts
Next Article in Special Issue
Sulfonated Hydrothermal Carbons from Cellulose and Glucose as Catalysts for Glycerol Ketalization
Previous Article in Journal
Sn-Based Porous Coordination Polymer Synthesized with Two Ligands for Tandem Catalysis Producing 5-Hydroxymethylfurfural
Previous Article in Special Issue
Waste Seashells as a Highly Active Catalyst for Cyclopentanone Self-Aldol Condensation
Open AccessFeature PaperArticle

C-O Bond Hydrogenolysis of Aqueous Mixtures of Sugar Polyols and Sugars over ReOx-Rh/ZrO2 Catalyst: Application to an Hemicelluloses Extracted Liquor

1
Univ Lyon, Universite Claude Bernard, CNRS, IRCELYON, UMR5256, 2 Avenue Albert Einstein, F-69626 Villeurbanne, France
2
Institut FCBA, InTechFibres, Domaine Universitaire, CS 90251, F-38044 Grenoble, France
*
Authors to whom correspondence should be addressed.
Catalysts 2019, 9(9), 740; https://doi.org/10.3390/catal9090740
Received: 18 July 2019 / Revised: 29 August 2019 / Accepted: 29 August 2019 / Published: 31 August 2019
The recovery and upgrade of hemicelluloses, a family of heteropolysaccharides in wood, is a key step to making lignocellulosic biomass conversion a cost-effective sustainable process in biorefinery. The comparative selective catalytic C-O bond hydrogenolysis of C5-C6 polyols, sugars, and their mixtures for the production of valuable C6 and C5 deoxygenated products was studied at 200 °C under 80 bar H2 over ReOx-Rh/ZrO2 catalysts. The sugars were rapidly converted to the polyols or converted into their hydrogenolysis products. Regardless of the reactants, C-O bond cleavage occurred significantly via multiple consecutive deoxygenation steps and led to the formation of linear deoxygenated C6 or C5 polyols. The distribution of products depended on the nature of the substrate and C-C bond scission was more important from monosaccharides. In addition, we demonstrated effective hydrogenolysis of a hemicellulose-extracted liquor from delignified maritime pine containing monosaccharides and low MW oligomers. Compared with the sugar-derived polyols, the mono- and oligosaccharides in the liquor were more rapidly converted to hexanediols or pentanediols. C-O bond scission was significant, giving a yield of desired deoxygenated products as high as 65%, higher than in the reaction of the synthetic mixture of glucose/xylose of the same C6/C5 sugar ratio (yield of 30%). View Full-Text
Keywords: hydrogenolysis; polyols; monosaccharides; hemicelluloses extracted liquor; ReOx-Rh/ZrO2 catalysts hydrogenolysis; polyols; monosaccharides; hemicelluloses extracted liquor; ReOx-Rh/ZrO2 catalysts
Show Figures

Graphical abstract

MDPI and ACS Style

Mounguengui-Diallo, M.; Sadier, A.; Noly, E.; Da Silva Perez, D.; Pinel, C.; Perret, N.; Besson, M. C-O Bond Hydrogenolysis of Aqueous Mixtures of Sugar Polyols and Sugars over ReOx-Rh/ZrO2 Catalyst: Application to an Hemicelluloses Extracted Liquor. Catalysts 2019, 9, 740.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop