CHARACTERIZATION AND COMBUSTION KINETICS OF CHARS OBTAINED FROM LOQUAT STONES

摘要

This paper describes the production of chars from loquat stones in a tube furnace at carbonization temperatures of 600℃, 700℃, and 800 ℃ in a nitrogen flow at a heating rate of 10℃ /min. The physical and chemical structures of the stones and chars were investigated by FTIR spectrometer, X-ray diffractometer, and SEM, as well as the combustion reaction and kinetic parameters based on the TG-DTG graphs obtained by thermogravimetric analysis. The combustion reaction was carried out at a heating rate 10℃/min and an oxygen flow rate of 50 mllmin up to 700℃. The kinetic parameters were calculated using the methods by Arrhenius; Coats and Redfern; Horowitz and Metzger; and Ingraham and Marier.