Raman Spectroscopic Characteristics of Different Rank Coals and the Relation with XRD Structural Parameters
LI Mei-fen, ZENG Fan-gui*, QI Fu-hui, SUN Bei-lei
Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Department of Earth Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Abstract：The Raman spectroscopic analysis for eleven different rank coals (57.58% to 94.01% of Cdaf, %) indicated that two distinct bands, i.e. D band (1 340-1 380 cm-1) and G band (1 580-1 600 cm-1), exist in the first order of Raman spectra, with the former being broader and the latter rather sharp. As the two bands were overlapped each other, each spectrum was fitted with two Lorentz peaks and the Raman information about position, intensity and FWHM of each band was thus obtained. The relation of these Raman parameters with Cdaf% showed that with the increase in C%, the position of D band and G band shifts to lower and higher frequency, respectively; the separation of the two band positions increases with the increase in C%; FWHM-D, FWHM-G and ID/IG have linear relationship with Cdaf% in the range of Cdaf% 75%-94%. The coal structural parameters, d002 and Lc from XRD are related with the position and FWHM of G band; the comparison of La from XRD and both from the Cancado and the KW equation indicated that the values from Cancado and the KW equation are unreasonable.
李美芬,曾凡桂*,齐福辉,孙蓓蕾 . 不同煤级煤的Raman谱特征及与XRD结构参数的关系[J]. 光谱学与光谱分析, 2009, 29(09): 2446-2449.
LI Mei-fen, ZENG Fan-gui*, QI Fu-hui, SUN Bei-lei . Raman Spectroscopic Characteristics of Different Rank Coals and the Relation with XRD Structural Parameters. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(09): 2446-2449.
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