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FT-IR investigation of the structural changes of Sulcis and South Africa coals under progressive heating in vacuum

机译：真空渐进加热下Sulcis和南非煤的结构变化的FT-IR研究

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Two samples of coals coming from South Africa and Sulcis (Sardinia, Italy) were subjected to progressive heating up to 800deg.C in vacuum. The infrared (IR) spectra of the residuals obtained at l00deg.C intervals from room temperature to 800deg.C show spectral changes ascribed to transformations at the level of the organic and inorganic components. Comparing these results with those previously obtained by heating the same coals in the presence of air and examining their pyridinic extracts, it appears that the Sulcis coal with respect to the other coals contains a lower amount of clay-minerals. Fulthermore, the IR analysis shows that this coal is nearer to being a lignite than a hard-coal.
机译：将来自南非和Sulcis（撒丁岛，意大利）的两个煤样品在真空中逐步加热到800摄氏度。从室温到800摄氏度在100摄氏度间隔下获得的残留物的红外（IR）光谱显示归因于有机和无机组分水平转变的光谱变化。将这些结果与先前通过在空气中加热相同的煤并检查其吡啶鎓提取物而获得的结果进行比较，似乎相对于其他煤而言，Sulcis煤包含的粘土矿物含量较低。此外，红外分析表明，这种煤比硬煤更接近褐煤。

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