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Hydrothermal degradation of lignin was carried out at 280–365°C and the structure of solid char residue was extensively examined by means of scanning electron microscopy (SEM), nitrogen absorption/desorption, X-ray spectroscopy (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal stability of the produced char was estimated by Thermogravimetry–Fourier transform infrared spectroscopy...
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