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Aryl sulfonic acid catalyzed hydrolysis of cellulose in water

Paper ID Volume ID Publish Year Pages File Format Full-Text
41183 45879 2012 4 PDF Available
Title
Aryl sulfonic acid catalyzed hydrolysis of cellulose in water
Abstract

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.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (92 K)Download as PowerPoint slideHighlights► Aryl sulfonic acids are better catalysts than H2SO4 for hydrolysis of cellulose. ► 4-Biphenylsulfonic acid gave the highest glucose yield at160 °C. ► Catalytic activity correlates with log D of the sulfonic acids.

Keywords
Cellulose; Hydrolysis; Sulfonic acids; Saccharification; Catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 417–418, 29 February 2012, Pages 259–262
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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