title: Hydrolysis of cellulose in SO₃H-functionalized ionic liquids.
abstract: Influence of acidity and structure of ionic liquids on microcrystalline cellulose (MCC) hydrolysis was investigated. MnCl₂-containing ionic liquids (ILs) were efficient catalysts and achieved MCC conversion rates of 91.2% and selectivities for 5-hydroxymethyl furfural (HMF), furfural and levulinic acid (LA) of 45.7%, 26.2% and 10.5%, respectively. X-ray diffractometry indicated that catalytic hydrolysis of MCC in ionic liquids resulted in the changes to MCC crystallinity and transformation of cellulose I into cellulose II. SO₃H-functionalized ionic liquids showed higher activities than non-functionalized ILs. The simplicity of the chemical transformation of cellulose provides a new approach for the use this polymer as raw material for renewable energy and chemical industries.
authors.affiliation: State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China.
authors.forename: Furong
authors.initials: F
authors.lastname: Tao
authors.forename: Huanling
authors.initials: H
authors.lastname: Song
authors.forename: Lingjun
authors.initials: L
authors.lastname: Chou
mesh_terms: D002384:Catalysis; D002482:Cellulose / Q000737:chemistry*; D005662:Furaldehyde / Q000031:analogs & derivatives / Q000737:chemistry; D006868:Hydrolysis; D052578:Ionic Liquids / Q000737:chemistry*; D007982:Levulinic Acids / Q000737:chemistry; D013451:Sulfonic Acids / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D052578:Ionic Liquids; D007982:Levulinic Acids; D013451:Sulfonic Acids; C008046:5-hydroxymethylfurfural; D002482:Cellulose; D005662:Furaldehyde; C032246:levulinic acid