Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 48, Issue 22, Pages 10152-10155Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ie901047u
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Funding
- Center for Environmentally Beneficial Catalysis (CEBC)
- University of Kansas
- American Chemical Society
- PRF [URI-49436]
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Cellulose dissolves in Bronsted acidic ionic liquids 1-(1-propylsulfonic)-3-methylimidazolium chloride and 1-(1-butylsulfonic)-3-methylimidazolium chloride up to 20 g/100 g ionic liquid by gentle mixing at room temperature. Hydrolysis of cellulose can be carried out in these ionic liquid solutions by the addition of 2.0 equiv of water per glucose unit of cellulose and heating the solution at 70 degrees C and at atmospheric pressure with or without preheating to give glucose along with other reducing sugars. The hydrolysis of Sigmacell cellulose (DP similar to 450) in 1-(1-propylsulfonic)-3-methylimidazolium chloride produced the highest total reducing sugar (62%) and glucose (14%) yields and was attained in I h of preheating at 70 degrees C and 30 min of heating at 70 degrees C, after adding water.
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