Conversion of d-Xylose and Hemicellulose in Water/Ethanol Mixtures

During hydrothermal dehydration of d-xylose, side reactions reduce the furfural yield and are mainly responsible for humin formation. Short-chain alcohols, like ethanol, are able to suppress such furfural-consuming side reactions. Therefore, acid-catalyzed xylose conversion in different water/ethanol mixtures was examined to evaluate the alcohol influence. In terms of the xylose conversion, no deceleration could be observed, although an increase of the activation energy with rising ethanol proportion was determined. Furfural yield in water was 36–52% and could be increased by adding ethanol up to 90%. Simultaneously, the mass of formed humins could be decreased by an average of 60%. However, the activation energy for furfural degradation does not show a clear trend. If organosolv hemicellulose is used instead of xylose, an increase in furfural yield cannot be observed. An ethanol content of 50 wt % even leads to a reduction of the yield. Nevertheless, by the addition of ethanol, a decline in the amount of...

[1]  J. Clark,et al.  Analysis and optimisation of a novel “bio-brewery” approach: Production of bio-fuels and bio-chemicals by microwave-assisted, hydrothermal liquefaction of brewers’ spent grains , 2019, Energy Conversion and Management.

[2]  M. Kraume,et al.  Separation of lignin from beech wood hydrolysate using polymeric resins and zeolites – Determination and application of adsorption isotherms , 2019, Separation and Purification Technology.

[3]  K. Nieminen,et al.  Fast furfural formation from xylose using solid acid catalysts assisted by a microwave reactor , 2018, Fuel Processing Technology.

[4]  M. Klemm,et al.  Kinetics of Hydrothermal Furfural Production from Organosolv Hemicellulose and d-Xylose , 2018, Industrial & Engineering Chemistry Research.

[5]  Stephanie G. Wettstein,et al.  Conversion of Sugars and Biomass to Furans Using Heterogeneous Catalysts in Biphasic Solvent Systems , 2018, ChemCatChem.

[6]  M. Klemm,et al.  Hydrothermal carbonization: Temperature influence on hydrochar and aqueous phase composition during process water recirculation , 2018, Journal of Environmental Chemical Engineering.

[7]  G. Marlair,et al.  Hydrolysis of Hemicellulose and Derivatives—A Review of Recent Advances in the Production of Furfural , 2018, Front. Chem..

[8]  David K. Johnson,et al.  Production of Furfural from Process-Relevant Biomass-Derived Pentoses in a Biphasic Reaction System , 2017 .

[9]  G. Morales,et al.  Dehydration of Xylose to Furfural in Alcohol Media in the Presence of Solid Acid Catalysts , 2016 .

[10]  V. Santos,et al.  Furfural production using ionic liquids: A review. , 2016, Bioresource technology.

[11]  P. Dhepe,et al.  Solid acid catalyzed synthesis of furans from carbohydrates , 2016 .

[12]  Chun-Zhu Li,et al.  Biomass-derived sugars and furans: Which polymerize more during their hydrolysis? , 2015 .

[13]  Y. Ni,et al.  Improvement of Furfural Production from Concentrated PreHydrolysis Liquor (PHL) of a Kraft-Based Hardwood Dissolving Pulp Production Process , 2015 .

[14]  F. Felissia,et al.  Kinetic study of the extraction of hemicellulosic carbohydrates from sugarcane bagasse by hot water treatment. , 2015 .

[15]  Chun-Zhu Li,et al.  Acid-Catalyzed Conversion of Xylose in 20 Solvents: Insight into Interactions of the Solvents with Xylose, Furfural, and the Acid Catalyst , 2014 .

[16]  S. Saravanamurugan,et al.  Acetalization of furfural with zeolites under benign reaction conditions , 2014 .

[17]  J. C. van der Waal,et al.  Acid catalysed alcoholysis of wheat straw: Towards second generation furan-derivatives , 2014 .

[18]  B. Weckhuysen,et al.  Formation, molecular structure, and morphology of humins in biomass conversion: influence of feedstock and processing conditions. , 2013, ChemSusChem.

[19]  Y. Ni,et al.  Furfural formation from the pre-hydrolysis liquor of a hardwood kraft-based dissolving pulp production process. , 2013, Bioresource technology.

[20]  D. Vlachos,et al.  Conversion of Xylose to Furfural Using Lewis and Brønsted Acid Catalysts in Aqueous Media , 2012 .

[21]  Chun-Zhu Li,et al.  Acid-catalyzed conversion of xylose in methanol-rich medium as part of biorefinery. , 2012, ChemSusChem.

[22]  M. Abu‐Omar,et al.  Synthesis of furfural from xylose, xylan, and biomass using AlCl3·6H2O in biphasic media via xylose isomerization to xylulose. , 2012, ChemSusChem.

[23]  Chun-Zhu Li,et al.  Reaction pathways of glucose during esterification: effects of reaction parameters on the formation of humin type polymers. , 2011, Bioresource technology.

[24]  S. Marinković,et al.  Direct conversion of xylan into alkyl pentosides. , 2010, Carbohydrate research.

[25]  Ronald T. Raines,et al.  Synthesis of furfural from xylose and xylan. , 2010, ChemSusChem.

[26]  S. Marinković,et al.  Direct conversion of wheat bran hemicelluloses into n-decyl-pentosides , 2010 .

[27]  W. Jong,et al.  Chloride ions enhance furfural formation from D-xylose in dilute aqueous acidic solutions , 2010 .

[28]  Wm. Curtis Conner,et al.  Kinetics of furfural production by dehydration of xylose in a biphasic reactor with microwave heating , 2010 .

[29]  Z. Zhao,et al.  Microwave-assisted conversion of lignocellulosic biomass into furans in ionic liquid. , 2010, Bioresource technology.

[30]  Jin-Soo Hwang,et al.  Furfural: Hemicellulose/xylosederived biochemical , 2008 .

[31]  A. Johansson,et al.  Organosolv pulping — methods and pulp properties , 1987 .