title: SO3H-functionalized ionic liquid: efficient catalyst for bagasse liquefaction.
abstract: Liquefaction is a process for the production of biofuel or value-added biochemicals from non-food biomass. SO(3)H-, COOH-functionalized and HSO(4)-paired imidazolium ionic liquids were shown to be efficient catalysts for bagasse liquefaction in hot compressed water. Using SO(3)H-functionalized ionic liquid, 96.1% of bagasse was liquefied and 50.6% was selectively converted to low-boiling biochemicals at 543 K. The degree of liquefaction and selectivity for low-boiling products increased and the average molecular weight of the tetrahydrofuran soluble products decreased with increasing acidic strength of ionic liquids. Analysis of products and comparative characterization of raw materials and residues suggested that both catalytic liquefaction and hydrolysis processes contribute to the high conversion of bagasse. A possible liquefaction mechanism based on the generation of 3-cyclohexyl-1-propanol, one of the main products, is proposed.
authors: School of Chemistry and Chemical Engineering, Pulp & Paper Engineering State Key Laboratory of China, South China University of Technology, Guangzhou 510640, PR China.
authors: Jinxing
authors: J
authors: Long
authors: Bin
authors: B
authors: Guo
authors: Junjiang
authors: J
authors: Teng
authors: Yinghao
authors: Y
authors: Yu
authors: Lefu
authors: L
authors: Wang
authors: Xuehui
authors: X
authors: Li
mesh_terms: D001709:Biotechnology / Q000379:methods*; D002384:Catalysis; D002482:Cellulose / Q000737:chemistry*; D004602:Elements; D008401:Gas Chromatography-Mass Spectrometry; D052578:Ionic Liquids / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D008970:Molecular Weight; D017550:Spectroscopy, Fourier Transform Infrared; D013451:Sulfonic Acids / Q000737:chemistry*; D013818:Thermogravimetry; D044366:Transition Temperature
chemical_list: D004602:Elements; D052578:Ionic Liquids; D013451:Sulfonic Acids; D002482:Cellulose; C027433:bagasse