TY - JOUR
T1 - Acid-treatment of C5 and C6 sugar monomers/oligomers
T2 - insight into their interactions
AU - Hu, Xun
AU - Wang, Shuai
AU - Wu, Liping
AU - Dong, Dehua
AU - Mahmudul Hasan, Md
AU - Li, Chun Zhu
N1 - Funding Information:
This project is supported by the Commonwealth of Australia under the Australia–China Science and Research Fund as well as by the Curtin University of Technology through the Curtin Research Fellowship Scheme.
PY - 2014/10
Y1 - 2014/10
N2 - 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.
AB - 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.
KW - Acid-catalyzed conversion
KW - Cross-polymerization
KW - Levulinic acid
KW - Polymer
KW - Sugars
UR - http://www.scopus.com/inward/record.url?scp=84902298306&partnerID=8YFLogxK
U2 - 10.1016/j.fuproc.2014.05.024
DO - 10.1016/j.fuproc.2014.05.024
M3 - Article
AN - SCOPUS:84902298306
SN - 0378-3820
VL - 126
SP - 315
EP - 323
JO - Fuel Processing Technology
JF - Fuel Processing Technology
ER -