Lei, Zhihui published the artcileThermal pyrolysis characteristics and kinetics of hemicellulose isolated from Camellia Oleifera Shell, Application of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is Camellia Oleifera shell hemicellulose extraction thermal decomposition kinetics; Camellia Oleifera Shell; Hemicelluloses; Kinetic; Pyrolysis; Thermogravimetric analysis.
Camellia Oleifera Shell (COS) is a kind of renewable lignocellulose resource and contains abundant hemicelluloses. In this work, the hemicelluloses in COS were extracted by alkali treatment and precipitated by ethanol with different concentration Thermal pyrolysis kinetics of COS hemicelluloses were investigated using a thermogravimetric analyzer at the heating rates of 5, 10, and 20 °C/min based on Coats-Redfern, Flynn-Wall-Ozawa (FWO), and Kissinger-Akahira-Sunose (KAS) model. The results showed that the best fitting thermal pyrolysis mechanism of COS hemicelluloses was one-dimensional diffusion reaction analyzed by Coats-Redfern model. The activation energies of COS hemicelluloses ranged from 175.07 to 247.87 kJ·mol-1 and from 174.74 to 252.50 kJ·mol-1 calculated by FWO and KAS, resp. The thermal stabilities of COS hemicelluloses were enhanced with the precipitated ethanol concentration increasing, and reflected by thermodn. parameters ΔH, ΔG and ΔS. This study may provide basic theor. supports for the thermochem. conversion of COS hemicelluloses.
Bioresource Technology published new progress about Activation energy. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Application of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal.
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