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http://dx.doi.org/10.5658/WOOD.2012.40.6.389

Kinetic Study on the Acid-catalyzed Hydrolysis of Xylan  

Seo, Young-Jun (Department of Forest Products and Technology (BK21 Program), Chonnam National University)
Lee, Hong-Joo (Department of Bioenergy Science and Engineering, Chonman National University)
Lee, Jae-Won (Department of Forest Products and Technology (BK21 Program), Chonnam National University)
Publication Information
Journal of the Korean Wood Science and Technology / v.40, no.6, 2012 , pp. 389-396 More about this Journal
Abstract
In this study, we investigated the kinetics of acid-catalyzed hydrolysis of xylan over a 60 min at $120^{\circ}C$. Sulfuric, oxalic and maleic acids were used as acid catalyst for hydrolysis. The calculated degradation rate constants ($k_1$) showed a correlation with the acid concentration, meaning that the stronger the acid, the higher the xylan degradation rate. Among sulfuric, oxalic and maleic acid catalyzed hydrolysis, the xylan degradation rate to xylose was highest with sulfuric acid. At equivalent solution pH, acid catalyzed hydrolysis was proportional to $H^+$ concentration. The $k_1$ of dicarboxylic acid such as oxalic and maleic acid was higher than that of sulfuric acid at same pH values during hydrolysis.
Keywords
kinetic study; acid-catalyzed hydrolysis; xylan; dicarboxylic acid;
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