Mozgawa W, Król M, Dyczek J, Deja J
Faculty of Materials Science and Ceramic, AGH University of Science and Technology, 30 Mickiewicza Av., 30-059 Krakow, Poland.
Faculty of Materials Science and Ceramic, AGH University of Science and Technology, 30 Mickiewicza Av., 30-059 Krakow, Poland.
Spectrochim Acta A Mol Biomol Spectrosc. 2014 Nov 11;132:889-94. doi: 10.1016/j.saa.2014.05.052. Epub 2014 May 29.
The results of FT-IR spectroscopic studies of coal fly ashes, originated from various polish power plants are reported. The results of MIR investigations were compared to the X-ray diffraction (XRD) measurements and chemical analyses. They are mainly composed of silica, alumina and lime. The infrared spectrum in the middle range can be used to describe both the structure of phases present in the fly ash and to identify the characteristic elements of the individual components of ash. The results indicate that the amount of aluminosilicate and its Si/Al ratio induce a shift in the T-O stretching band appearing at 950-1100 cm(-1). Moreover, FWHM of these bands indicates the participation of the crystalline phase relative to amorphous. The presence of carbonate phases generates substantial changes in the 1450-1400 cm(-1) area of the spectra. The presence of such phases as anhydrite, mullite or illite has also been established on the basis of IR spectra.
本文报道了源自波兰各发电厂的粉煤灰的傅里叶变换红外光谱（FT-IR）研究结果。将中红外（MIR）研究结果与X射线衍射（XRD）测量结果及化学分析结果进行了比较。它们主要由二氧化硅、氧化铝和石灰组成。中红外光谱可用于描述粉煤灰中存在的相结构，并识别灰分各成分的特征元素。结果表明，铝硅酸盐的含量及其硅铝比会导致出现在950-1100 cm(-1)处的T-O伸缩带发生位移。此外，这些谱带的半高宽（FWHM）表明了晶相相对于非晶相的参与情况。碳酸盐相的存在会使光谱在1450-1400 cm(-1)区域产生显著变化。基于红外光谱也确定了硬石膏、莫来石或伊利石等相的存在。
