Catalytic activities of eight alkyl/aryl sulfonic acids in water were compared with sulfuric acid of the same acid strength (0.0321 mol H + ion/L) for hydrolysis of Sigmacell cellulose (DP ∼ 450) in the 140-190 °C temperature range by measuring total reducing sugar (TRS), and glucose produced. Cellulose samples hydrolyzed at 160 °C for 3 h, in aqueous p-toluenesulfonic acid, 2-naphthalenesulfonic acid, and 4-biphenylsulfonic acid mediums produced TRS yields of 28.0, 25.4, and 30.3% respectively, when compared to 21.7% TRS produced in aqueous sulfuric acid medium. The first order rate constants at 160 °C in different acid mediums correlated with octanol/water distribution coefficient log D of these acids, except in the case of highly hydrophobic 4-dodceylbenzenesulfonic acid. In the series of sulfonic acids studied, 4-biphenylsulfonic acid appears to be the best cellulose hydrolysis catalyst. © 2012 Elsevier B.V. All rights reserved.
CITATION STYLE
Amarasekara, A. S., & Wiredu, B. (2012). Aryl sulfonic acid catalyzed hydrolysis of cellulose in water. Applied Catalysis A: General, 417–418, 259–262. https://doi.org/10.1016/j.apcata.2011.12.048
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