TY - JOUR
T1 - An experimental study on thermal decomposition behavior of magnesite
AU - Tian, Lu
AU - Tahmasebi, Arash
AU - Yu, Jianglong
N1 - Funding Information:
Acknowledgements This study was supported by the Natural Science Foundation of China (21176109, U1361120, and 21210102058). The authors also acknowledge the financial support through the Liaoning Outstanding Professorship Program (2011).
Publisher Copyright:
© 2014 Akadémiai Kiadó, Budapest, Hungary.
PY - 2014/12
Y1 - 2014/12
N2 - Thermal decomposition of magnesite is investigated by using a TG-MS. Different kinetic methods including Coats-Redfern, Flynn-Wall-Ozawa, and Kissinger-Akahira-Sunose are used to investigate the thermal decomposition kinetics of magnesite. It was observed that the activation energy values obtained by these methods are similar. The average apparent activation energy is found to be about 203 kJ mol-1. The raw magnesite and its decomposition products obtained at different temperatures are analyzed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscope (SEM). The concentration of functional groups, crystal structure and composition, and apparent morphology of decomposition products were studied in detail. The FTIR, XRD, and SEM analyses showed that magnesite was completely decomposed at 973 K to form MgO.
AB - Thermal decomposition of magnesite is investigated by using a TG-MS. Different kinetic methods including Coats-Redfern, Flynn-Wall-Ozawa, and Kissinger-Akahira-Sunose are used to investigate the thermal decomposition kinetics of magnesite. It was observed that the activation energy values obtained by these methods are similar. The average apparent activation energy is found to be about 203 kJ mol-1. The raw magnesite and its decomposition products obtained at different temperatures are analyzed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscope (SEM). The concentration of functional groups, crystal structure and composition, and apparent morphology of decomposition products were studied in detail. The FTIR, XRD, and SEM analyses showed that magnesite was completely decomposed at 973 K to form MgO.
KW - Activation energy
KW - Magnesite
KW - Thermal decomposition
KW - Thermogravimetric analysis
UR - http://www.scopus.com/inward/record.url?scp=84912067491&partnerID=8YFLogxK
U2 - 10.1007/s10973-014-4068-9
DO - 10.1007/s10973-014-4068-9
M3 - Article
AN - SCOPUS:84912067491
SN - 1388-6150
VL - 118
SP - 1577
EP - 1584
JO - Journal of Thermal Analysis and Calorimetry
JF - Journal of Thermal Analysis and Calorimetry
IS - 3
ER -