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OALib Journal期刊
ISSN: 2333-9721
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高灰煤中矿物质及碳结构的振动光谱分析
, PP. 1167-1175
Keywords: 傅里叶变换红外光谱,拉曼光谱,高灰煤,矿物质,碳结构
Abstract:
？利用傅里叶变换红外光谱(ft-ir)、拉曼光谱和x射线衍射(xrd),分析了广西合山煤(gx)和平顶山煤(pd)及其酸洗煤的矿物质组分和碳结构。ft-ir谱图显示,gx和pd原煤的高岭石含量最为丰富,其次是石英和方解石,由二阶导数红外谱图发现,煤中还存在云母、蛇纹石、石膏和碱性长石。此外,从ft-ir谱图出现的三个层间水oh伸缩振动峰(3695、3651和3619cm-1)判断煤中高岭石的结晶度不高。酸洗煤的ft-ir和xrd分别显示出清晰的芳香c=c官能团峰(1600cm-1)和微晶碳(002)衍射峰;原煤的ft-ir和xrd都表明,矿物质完全掩盖了碳的信息。尽管如此,原煤及酸洗煤的拉曼谱图显示出清晰的缺陷碳峰(d峰)和石墨碳峰(g峰),而矿物质的信息完全被信号更强的碳峰掩盖。酸洗处理对煤的碳结构有较弱的影响,酸洗煤的碳结构有序度略低于原煤。
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