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FT-IR and XRD analysis of coal from Makum coalfield of Assam

机译:阿萨姆邦马库姆煤田煤的FT-IR和XRD分析

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High sulphur coal sample from Ledo colliery of Makum coalfield. Assam, India was studied using FT-IR and XRD methods. FT-IR study shows the presence of aliphatic -CH, -CH_2 and -CH_3 groups, aliphatic C-O-C stretching associated with -OH and -NH stretching vibrations and HCC rocking (single and condensed rings). XRD pattern of the coal shows that it is amorphous in nature. Function of Radial Distribution Analysis (FRDA) indicates that coal is lignite in type and there is no evidence of graphite-like structure. The first maximum in the G(r) plot of FRDA at r = 0.14nm relates to the aliphatic C-C bond (Type C-CH=CH-C), the second maximum at r = 0.25nm relates to the distance between carbon atoms of aliphatic chains that are located across one carbon atom. The curve intensity profiles obtained from FRDA show quite regular molecular packets for this coal. The coal was found to be lignite in nature.
机译:来自Makum煤田Ledo煤矿的高硫煤样品。使用FT-IR和XRD方法研究了印度阿萨姆邦。 FT-IR研究表明存在脂肪族-CH,-CH_2和-CH_3基团,与-OH和-NH拉伸振动相关的脂肪族C-O-C拉伸振动以及HCC摇摆(单环和稠环)。煤的XRD图谱表明其本质上是无定形的。径向分布分析(FRDA)的功能表明煤是褐煤类型,并且没有石墨状结构的证据。 FRDA的G(r)图中在r = 0.14nm处的第一个最大值与脂族CC键(类型C-CH = CH-C)有关,在r = 0.25nm处的第二个最大值与碳原子之间的距离有关。横跨一个碳原子的脂族链。从FRDA获得的曲线强度曲线表明,该煤的分子包非常规则。发现该煤本质上是褐煤。

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