O-506 Reaction kinetics of the lignin decomposition in supercritical water
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概要
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Decomposition of lignin in supercritical water (SCW) was conducted in a continuous flow system for 390-450 ℃ and 25 MPa at short residence time of 0.5-10 s. Yield of char, gaseous, TOC (total organic carbon), phenolic and aromatic compounds are used to construct a reaction network model and the kinetic parameters are determined by assuming a first-order reaction. It is observed that lignin decomposition rate and formation of char in SCW occurs rapidly and its behavior can be reasonably explained by the first order, serial kinetic model. Although overall rate of decomposition increases with temperature as prescribed by Arrhenius equation, there are some pathways that do not follow the Arrhenius behavior.
- 2012-01-18
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