XRD analysis on soot and ash from coal combustion
Автор: Vanchinkhuu J., Bayanjargal E.
Журнал: Вестник Бурятского государственного университета. Химия. Физика @vestnik-bsu-chemistry-physics
Статья в выпуске: 2-3, 2016 года.
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Products such as soot and ash emitted from coal combustion in heating stove for traditional Mongolian ger and small houses have been analyzed. The amorphous phase in soot and ash is identified by using the method of quantitative analysis based on the Rietveld method. The crystalline phases in soot and ash are mainly formed by graphitic carbon (rhombic, R3 (146), a=2.45Å, c=10.04Å, V=52.47Å3, Z=6)). Soot and ash are composed of crystal structure of elements (S, Ca, Fe, Na, Si, Al, Mg) included in combust coal and chemical compounds (CaSO4, SiO2, Fe2O3, CaSO4∙2(H2O), MgSO4∙6(H2O) formed in combustion process as well as the graphitic carbon. The results are checked by SEM-EDS analysis. By using the Debye-Scherrer equation the average crystallite size of carbon ball giving clearer XRD pattern is estimated. The results of analysis show that the content of amorphous phase in soot is greater than that of ash. Also, the temperature is the key factor formation of crystalline and amorphous phase.
Soot, ash, coal combustion, coal composition, amorphous and crystalline phase, structural analysis
Короткий адрес: https://sciup.org/148316649
IDR: 148316649 | DOI: 10.18101/2306-2363-2016-2-3-18-25
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