山西阳煤二矿无烟煤元素赋存特征的XPS研究  

XPS study on the occurrence characteristics of anthracite elements in Yangmei No.2 Mine,Shanxi Province

作　　者：曹潘飞 吴林 CAO Panfei;WU Lin(Shaanxi Xiaobaodang Mining Co.,Ltd.,Yulin 719000,China)

机构地区：[1]陕西小保当矿业有限公司,陕西榆林719000

出　　处：《中国矿业》2022年第S01期198-202,共5页China Mining Magazine

摘　　要：认识煤中主要元素的赋存特征,是构建煤大分子结构的基础。本文采用工业分析、元素分析以及X射线电子能谱解析山西阳煤二矿无烟煤碳、氢、氧、氮和硫的赋存特征。结果表明:山西阳煤二矿无烟煤中碳的主要赋存形式为芳香碳和脂肪碳,碳碳单键的含量最高占82.34%,碳氧键的含量次之,占11.01%,碳氢键占6.17%,说明无烟煤存在一定的烷基侧链,羧基含量最低仅占0.48%。醚基氧和羟基氧占氧元素的82.51%,羰基占13.67%,羧基占3.82%。氮元素主要以吡咯氮和吡啶氮等有机氮形式存在,其中大部分存在于煤分子边缘,吡咯氮由于其芳香共轭体系的稳定性含量最多,占氮元素的41.28%,吡啶氮含量次之占25.24%,质子化吡啶含量占17.36%,主要镶嵌于芳香结构的内部,氮氧化物含量最少,占16.12%;硫元素存在形式以有机硫为主,无机硫为辅,分别占硫元素的74.03%和25.97%。有机硫中噻吩类硫含量最多占硫元素总量的35.34%,砜和亚砜占32.30%,无机硫占25.97%,硫醇和硫醚占6.39%。Recognizing the fugitive characteristics of major elements in coal is the basis for constructing the macromolecular structure of coal.In this paper,industrial analysis,elemental analysis and X-ray electron spectroscopy are used to analyze the fugitive characteristics of carbon,hydrogen,oxygen,nitrogen and sulfur in anthracite coal from Shanxi Yangmei No.2 Mine.The results show that the main forms of carbon in anthracite from Shanxi Yangmei No.2 mine are aromatic carbon and aliphatic carbon,with the highest carbon-carbon single bond content accounting for 82.34%,followed by carbon-oxygen bond content accounting for 11.01%and carbon-hydrogen bond content accounting for 6.17%,indicating the existence of certain alkyl side chains in anthracite,and the lowest carboxyl content accounting for only 0.48%.The ether oxygen and hydroxyl oxygen accounted for 82.51%of the oxygen element,the carbonyl group accounted for 13.67%,and the carboxyl group accounted for 3.82%.Nitrogen mainly exists in the form of organic nitrogen such as pyrrole nitrogen and pyridine nitrogen,most of which exist at the edge of the coal molecule,and pyrrole nitrogen has the most content due to the stability of its aromatic conjugate system,accounting for 41.28%of nitrogen,followed by pyridine nitrogen with 25.24%,protonated pyridine with 17.36%,mainly embedded in the interior of the aromatic structure,and nitrogen oxide with the least content,accounting for 16.12%;sulfur the presence of elements in the form of organic sulfur is dominated by inorganic sulfur,accounting for 74.03%and 25.97%of sulfur elements,respectively.Among the organic sulfur,thiophene sulfur content accounted for the most 35.34%of the total sulfur elements,sulfone and sulfoxide accounted for 32.30%,inorganic sulfur accounted for 25.97%,thiol and thioether accounted for 6.39%.

关 键 词：XPS 无烟煤 元素赋存 碳 氧 氮 硫 

分 类 号：TQ530[化学工程—煤化学工程]