Production of value-added chemicals from bio-oil via acid catalysis coupled with liquid-liquid extraction
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Sugar/sugar derivatives in bio-oil can be effectively separated from aromatics via water/chloroform extraction. Subsequent acid-treatment in methanol converts the sugars into levulinic acid/ester and the sugar derivatives into fuel additives. Further extraction with CH2Cl2/CHCl3 could efficiently separate methyl levulinate and levulinic acid from other products.
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Yu, Yun; Chua, Yee Wen; Wu, Hongwei (2016)This study characterizes the pyrolytic sugars in three bio-oils (with a total sugar content range of 55.6–69.2 mg g–1 bio-oil) produced from biomass fast pyrolysis by high performance anion exchange chromatography with ...
Acid-catalyzed conversion of C6 sugar monomer/oligomers to levulinic acid in water, tetrahydrofuran and toluene: Importance of the solvent polarityHu, Xun; Wang, S.; Westerhof, Roel; Wu, Liping; Song, Yao; Dong, Dehua; Li, Chun-Zhu (2015)In this study, acid-catalyzed conversions of three typical C6 sugar monomers/oligomers (glucose, maltose, and beta-cyclodextrins) to levulinic acid in water, tetrahydrofuran (THF) and toluene have been investigated over ...
Contribution of dehydration and depolymerization reactions during the fast pyrolysis of various salt-loaded celluloses at low temperaturesLiu, Dawei; Yu, Yun; Hayashi, J.; Moghtaderi, B.; Wu, Hongwei (2014)The loaded salts (NaCl, KCl, MgCl2, and CaCl2) have significantly different influence on the contribution of dehydration and depolymerization reactions to the decomposition of sugar structures during cellulose fast pyrolysis ...