Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 50, Issue 21, Pages 12276-12280Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ie200938h
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Funding
- Center for Environmentally Beneficial Catalysis (CEBC) at the University of Kansas
- American Chemical Society [UR1-49436]
- National Science Foundation (NSF) [CBET-0929970, HRD-1036593]
- U.S. Department of Agriculture (USDA) [CBG-2010-38821-21569]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [0929970] Funding Source: National Science Foundation
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Dilute aqueous solutions of 1-(1-propylsulfonic)-3-methylimidazolium chloride and p-toluenesulfonic acid are shown to be better catalysts than aqueous sulfuric acid of the same H+ ion concentration for the degradation of cellulose at moderate temperatures and pressures. For example, Sigmacell cellulose (DP approximate to 450) in aqueous solutions of 1-(1-propylsulfonic)-3-methylimidazolium chloride, p-toluenesulfonic acid, and sulfuric acid of the same acid strength (0.0321 mol H+ ion/L) produced total reducing sugar (TRS) yields of 28.5%, 32.6%, and 22.0%, respectively, after heating at 170 degrees C for 3.0 h. In the same set of experiments, glucose yields of 22.2%, 21.0%, and 16.2% were attained in 1-(1-propylsulfonic)-3-methylimidazolium chloride, p-toluenesulfonic acid, and sulfuric acid mediums, respectively.
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