In order to learn the degradation pattern of different components of lignocellulose, we used self-made acidic cation exchange resins to catalyze the hydrolysis of straw, straw pretreated with steam-explosion and microcrystalline cellulose in this study. The effects of catalyst dosage, reaction temperature and time on the degradation of straw were studied in detail, and the results of cellulose and hemicellulose hydrolysis were compared. The results indicated that using resin as the catalyst and ionic liquid [Amim]Cl as the solvent, the straw can be converted with the highest TRS yield of 92% under the conditions of mlignocellulose:mcat=1, and reaction temperature between 140 and 160℃ under microwave-assisted heating for 20-40 min. Hemicellulose is more susceptible to degradation compared with cellulose. The xylose yield was 47.3% when the reaction was heated at 140℃ for 30 min and the glucose yield was 45.8% when the reaction was heated at 160℃ for 40 min. The degradations of different lignocellulose were investigated. The results indicated that the acidic cation exchange resin is an efficient catalyst for the degradation of lignocellulose and the result of microcrystalline cellulose degradation is the best.
WANG Jingyun
,
YUAN Yuguo
,
FU Nihong
,
ZHOU Mingdong
,
ZANG Shuliang
. Degradation of lignocellulose for preparing reducing sugar catalyzed by acidic cation exchange resin[J]. Science & Technology Review, 2015
, 33(24)
: 23
-27
.
DOI: 10.3981/j.issn.1000-7857.2015.24.004
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