期刊
SOLID STATE SCIENCES
卷 122, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.solidstatesciences.2021.106778
关键词
Dolomite; Thermal decomposition; Kinetics; Dolomitic lime; Mn-srebrodolskite
资金
- project of university specific research Preparation and characterization of advanced materials [FCH-S-21-7553]
The study found significant differences in the thermal decomposition process of low-manganese ferroan dolomite in different atmospheres, with three reactions occurring in a carbon dioxide atmosphere and the activation energy significantly higher than in other atmospheres.
The mechanism and kinetics of the process of thermal decomposition of low-manganese ferroan dolomite were investigated by non-isothermal derivative thermogravimetric analysis in this work. The study of the effect of the composition of gaseous phase on the mechanism and kinetics of thermal decomposition process includes the kinetics experiments performed in nitrogen, carbon dioxide, air and oxygen. While the process of endothermic decomposition takes place in one-step in a carbon dioxide-free atmosphere or in air, three separate reactions take place in carbon dioxide. The activation energy of these three reactions is also significantly higher than that of the thermal decomposition of ferroan dolomite in nitrogen, oxygen or air.
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