Acid-treatment of C5 and C6 sugar monomers/oligomers: Insight into their interactions
MetadataShow full item record
Carbohydrates are the intermediates/products during hydrolysis of biomass, which can be converted to value-added chemicals/biofuels via further acid-catalysis. The interactions between the typical carbohydrates/furans including glucose, fructose, raffinose, xylose, and furfural during their acid-catalyzed conversion in water/dimethyl sufoxide were investigated in this study. The insoluble polymer formed from the carbohydrates was measured and characterized with FT-IR, while the soluble polymers were characterized with a UV-fluorescence spectrometer. The interaction or cross-polymerization of xylose/glucose, fructose/raffinose, furfural/glucose, and furfural/fructose does exist, producing more soluble polymer but not significantly more insoluble polymer. The insoluble polymer deactivates the solid acid catalyst, slowing down conversion of sugars/intermediates. In addition, different sugars have very different propensities towards polymerization in water, which follows the order: fructose < raffinose < glucose < xylose < furfural. In addition, the acid-treatment of glucose in DMSO and in water produces the similar amount of insoluble polymer, while the insoluble polymer formed in the acid-treatment of xylose is less in DMSO than in water at the experimental conditions employed.
Showing items related by title, author, creator and subject.
Hu, Xun; Kadarwati, S.; Wang, S.; Song, Y.; Hasan, M.; Li, Chun-Zhu (2015)Sugars and furans are important intermediates during the conversion of non-food lignocellulosic biomass to biofuels and chemicals. In this study, polymerization of the sugars (glucose, fructose, xylose) and furans ...
Acid-catalyzed conversion of mono- and poly-sugars into platform chemicals: Effects of molecular structure of sugar substrateHu, Xun; Wu, Liping; Wang, Yi; Song, Yao; Mourant, Daniel; Gunawan, Richard; Gholizadeh, Mortaza; Li, Chun-Zhu (2013)Hydrolysis/pyrolysis of lignocellulosic biomass always produces a mixture of sugars with distinct structures as intermediates or products. This study tried to elucidate the effects of molecular structure of sugars on their ...
Yu, Y.; Chua, Y.; 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 ...