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Reducing Willow Wood Fuel Emission by Low Temperature Microwave Assisted Hydrothermal Carbonization
Published on: May 19, 2019
Fast transformation of glucose and di-/polysaccharides into 5-hydroxymethylfurfural by microwave heating in an ionic
Xinhua Qi1, Masaru Watanabe, Taku M Aida
1Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, PR China. qixinhua@scf.che.tohoku.ac.jp
Abstract:
An efficient method for converting glucose into 5-hydroxymethylfurfural (5-HMF), in the presence of CrCl3 catalyst, is developed by using the ionic liquid 1-butyl-3-methyl imidazolium chloride as solvent. A 5-HMF yield of 71 % is achieved in 30 s for 96 % glucose conversion with microwave heating at 140 °C. The activation energy of glucose conversion is determined to be 114.6 kJ mol(-1), with a pre-exponential factor of 3.5 x 10(14) min(-1). Fructose, sucrose, cellobiose, and cellulose are studied and 5-HMF yields of 54 % are obtained for cellulose conversion at 150 °C during 10 min of reaction time. Recycling of the ionic liquid and CrCl3 is demonstrated with six cycles of use.
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