Micro-Raman Spectroscopy Study of 32 Kinds of Chinese Coals: Second-Order Raman Spectrum and Its Correlations with Coal Properties
Micro-Raman Spectroscopy Study of 32 Kinds of Chinese Coals: Second-Order Raman Spectrum and Its Correlations with Coal Properties
复制标题
中国32种煤的显微拉曼光谱研究：二阶拉曼光谱及其与煤性质的相关性
DOI：
10.1021/acs.energyfuels.7b00990
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发表时间：
2017
期刊：
影响因子：
5.3
通讯作者：
Xiang Jun
中科院分区：
文献类型：
--
作者：
Xu Jun;Tang Hao;Su Sheng;Liu Jiawei;Han Hengda;Zhang Liangping;Xu Kai;Wang Yi;Hu Song;Zhou Yingbiao;Xiang Jun
利用显微拉曼光谱从二阶拉曼光谱的角度研究了中国 32 种煤的煤性质和结构。建立了一种新的煤二阶拉曼光谱反褶积方法，成功对2100~3400cm-1范围内的8个高斯波段进行了曲线拟合。结果表明，3060和2810 cm–1波段对煤中挥发分含量敏感，2925、2670和2480 cm–1波段与煤的更有序结构有关。找到了二阶拉曼谱带面积比与煤炭性质参数之间的合理关联，建立了一种有效的基于二阶拉曼光谱的煤炭性质综合评价方法。结果表明，随着煤中挥发分含量的增加，C-H和无定形碳结构增加，但与固定碳含量没有明显关系。此外，煤炭结构有序度...
Coal property and structures of 32 kinds of Chinese coals were investigated from the insights of second-order Raman spectrum using micro-Raman spectroscopy. A new deconvolution method for the second-order Raman spectrum of coal has been established, and the spectrum from 2100 to 3400 cm–1 was curve-fitted by eight Gaussian bands successfully. The results indicate that the bands at 3060 and 2810 cm–1 are sensitive to the volatiles content in coal and the bands at 2925, 2670, and 2480 cm–1 are related to the more ordered structures of coal. Reasonable correlations between the second-order Raman bands area ratios and coal property parameters have been found, and an effectively comprehensive method for evaluating the coal property based on a second-order Raman spectrum has been built. The results reveal that the C–H and amorphous carbon structures increase with the increase of volatile content in the coal but have no obvious relationship with the fixed carbon content. Besides, the order degree of coal structu...