Aryl sulfonic acid catalyzed hydrolysis of cellulose in water

作者：Amarasekara Ananda S^*; Wiredu Bernard

来源：Applied Catalysis A: General , 2012, 417: 259-262.

DOI：10.1016/j.apcata.2011.12.048

• Cellulose
• Hydrolysis
• Sulfonic acids
• Saccharification
• Catalyst

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 similar to 450) in the 140-190 degrees C temperature range by measuring total reducing sugar (TRS), and glucose produced. Cellulose samples hydrolyzed at 160 degrees 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 degrees 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.

• 出版日期2012-2-29