Comprehensive Investigation of Various Structural Features of Bituminous Coals Using Advanced Analytical Techniques
Comprehensive Investigation of Various Structural Features of Bituminous Coals Using Advanced Analytical Techniques
复制标题
利用先进分析技术全面研究烟煤的各种结构特征
DOI：
10.1021/acs.energyfuels.5b02064
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发表时间：
2015-11-01
期刊：
影响因子：
5.3
通讯作者：
Sahajwalla, Veena
中科院分区：
文献类型：
--
作者：
Li, Kejiang;Khanna, Rita;Sahajwalla, Veena
采用一系列先进的分析技术对五种中国煤进行了深入的研究，重点是提取结构参数。详细的调查进行了使用傅里叶变换红外光谱（FTIR），拉曼光谱，和X射线衍射峰去卷积和数据分析。从不同的技术确定的参数建立了相关性。FTIR数据表明，所有煤的表观芳香度（fa（FTIR））和（R/C）u与H/C原子比之间具有良好的线性关系。这些结果表明，FTIR光谱结合适当的数据分析可以成功地用于确定煤的芳香性和煤阶。拉曼光谱数据显示GL分数和H/C比之间的负线性关系;未观察到其他谱带分数和H/C比之间的明确关系。AD/AG随H/C比值的增大而减小，表明了高分子量的增长。
An in-depth investigation was carried out on five Chinese coals using a range of advanced analytical techniques focused specifically on extracting structural parameters. Detailed investigations were carried out using Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, and X-ray diffraction followed by peak deconvolution and data analysis. Correlations were established for parameters determined from different techniques. The FTIR data showed good linear relationships between the apparent aromaticity (fa(FTIR)) and (R/C)u with the H/C atomic ratio for all coals under investigation. These results indicate that FTIR spectroscopy coupled with appropriate data analysis can be successfully used to determine aromaticity and the coal rank. Raman spectroscopy data showed a negative linear relationship between the GL fraction and H/C ratio; no well-defined relationship was observed between other band fractions and the H/C ratio. The decrease of AD/AG with increasing H/C ratio indicates the growth of ...