Journal
ENERGY & FUELS
Volume 34, Issue 2, Pages 1830-1840Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.energyfuels.9b03747
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Funding
- High Level Scientific Research Funding Project of Guizhou Institute of Technology [0203001018036]
- Academic New Seedling Plan Project of Guizhou Institute of Technology [Qian Ke He [20171578908]]
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development [Y909kr1001]
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In this study, the water-soluble products formed during the hydrothermal carbonization of glucose were analyzed by liquid chromatography (LC)-mass spectrometry (MS) and LC-MS2 to determine the formulas and the possible structures of the main compounds. In addition to the well-known compounds of 3-deoxyglucosone, 5-hydroxymethylfurfural, and levulinic acid, the furanic compounds and the carbocyclic oxy-organics containing hydroxy group and carbonyl group with a molecular mass range between 170 and 260 Da were also identified. Both C-C coupling reaction and C-C cleavage reaction were proved to be involved during the formation of these carbocyclic oxy-organics, so they were proposed to be released via C-C cleavage of the primary polymers, which were formed by aldol condensation of the primary precursors formed during the degradation of glucose. The identification of these carbocyclic oxy-organics was indirect evidence that aldol condensation played a crucial role during the formation of hydrochar from carbonization of glucose.
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