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Polyols conversion promoted by alternative catalysts under conventional and microwave heating


Alternative sources of energy have been used in order to minimize both the emission of greenhouse gases and the economic dependence of non-renewable sources. Biomass, currently the most widely used renewable source in the world, is expected to play a key role in replacing fossil fuels in the medium to long term. Glycerin and polysaccharides can be converted into products of major commercial interest via fermentation processes for the production of alcohols, or catalytically converted into biofuels and industrial chemical inputs. Thus, catalysts based on industrial and/or commercial lignocellulosic byproducts will be prepared, characterized and tested in polyol conversion reactions. Catalysts based on lignin, yeast residues, glycerin and waste cotton fabrics will be prepared. The materials will be characterized by suitable techniques such as nitrogen adsorption, scanning electron microscopy, X-ray photoelectron spectroscopy, elemental analysis, X-ray diffraction and titration of surface functional groups. The catalysts will be used in conversion reactions of glycerol and fructose. The products will be quantified by gas chromatography and high performance liquid chromatography. The results of conversion and selectivity of glycerol and fructose will be related to the physical, chemical and textural properties of the catalysts. The use of microwave radiation for the promotion of reactions in the present work could be an interesting alternative for the substitution of conventional heating. Combined with the use of catalysts from industrial and/or commercial lignocellulosic byproducts, we hope to promote economic viability for the conversion of polyols to products of higher added value through catalytic reactions. (AU)

Scientific publications (8)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
RODRIGUES, RAPHAEL; SANTOS, MIKAELA S.; NUNES, RENAN S.; CARVALHO, WAGNER A.; LABUTO, GEORGIA. Solvent-free solketal production from glycerol promoted by yeast activated carbons. FUEL, v. 299, SEP 1 2021. Web of Science Citations: 0.
KOMATSU, JENNY S.; MOTTA, BEATRIZ M.; TIBURCIO, RODOLFO S.; NETO, ANA M. PEREIRA; DE PAPE, POL W. G.; MANDELLI, DALMO; CARVALHO, WAGNER A. Iron Nitrate Modifiied Cotton and Polyester Textile Fabric Applied for Reactive Dye Removal from Water Solution. Journal of the Brazilian Chemical Society, v. 32, n. 5, p. 964-977, MAY 2021. Web of Science Citations: 0.
DELGADO-ARCANO, YAIME; MANDELLI, DALMO; CARVALHO, WAGNER ALVES; MAGALHAES PONTES, LUIZ ANTONIO. Valorization of Corncob by Hydrolysis-Hydrogenation to Obtain Xylitol Under Mild Conditions. WASTE AND BIOMASS VALORIZATION, FEB 2021. Web of Science Citations: 0.
DE ARAUJO, MARCOS LOPES; CORREIA, GILVAN AGUIAR; CARVALHO, WAGNER ALVES; SHUL'PINA, LIDIA SERGEEVNA; KOZLOV, YURIY NIKITOVICH; SHUL'PINA, GEORGIY BORISOVICH; MANDELLI, DALMO. Transformation of biomass derivatives in aqueous medium: Oxidation of ethanol from sugarcane and acetol from biodiesel glycerol catalyzed by Fe-3(+)- H2O2. MOLECULAR CATALYSIS, v. 500, JAN 2021. Web of Science Citations: 0.
MODESTO, HELEN R.; LEMOS, SHERLAN G.; DOS SANTOS, MIKAELA S.; KOMATSU, JENNY S.; GONCALVES, MARAISA; CARVALHO, WAGNER A.; CARRILHO, ELMA N. V. M.; LABUTO, GEORGIA. Activated carbon production from industrial yeast residue to boost up circular bioeconomy. Environmental Science and Pollution Research, v. 28, n. 19, SI AUG 2020. Web of Science Citations: 1.
NUNES, RENAN S.; REIS, GABRIELLE M.; VIEIRA, LIGIA M.; MANDELLI, DALMO; CARVALHO, WAGNER A. Ultra-Fast Selective Fructose Dehydration Promoted by a Kraft Lignin Sulfonated Carbon Under Microwave Heating. CATALYSIS LETTERS, v. 151, n. 2 JUL 2020. Web of Science Citations: 0.
NUNES, RENAN S.; TUDINO, TATIANE C.; VIEIRA, LIGIA M.; MANDELLI, DALMO; CARVALHO, WAGNER A. Rational production of highly acidic sulfonated carbons from kraft lignins employing a fractionation process combined with acid-assisted hydrothermal carbonization. Bioresource Technology, v. 303, MAY 2020. Web of Science Citations: 0.
TUDINO, TATIANE C.; NUNES, RENAN S.; MANDELLI, DALMO; CARVALHO, WAGNER A. Influence of Dimethylsulfoxide and Dioxygen in the Fructose Conversion to 5-Hydroxymethylfurfural Mediated by Glycerol's Acidic Carbon. FRONTIERS IN CHEMISTRY, v. 8, APR 8 2020. Web of Science Citations: 0.

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