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OALib Journal期刊
ISSN: 2333-9721
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神华长焰煤大分子结构特征的研究
, PP. 513-522
Keywords: 神华长焰煤,溶剂抽提,rico,gc-ms
Abstract:
？利用ase350型超声快速溶剂抽提仪,在高温高压下对神华长焰煤(sh)进行二硫化碳/n-甲基吡咯烷酮(cs2/nmp)混合溶剂抽提,抽提率约为25%(质量分数)。将得到的抽提残渣(shc)进行钌离子催化氧化(rico)降解反应,并对产物进行了离子色谱(ic)检测和以四甲基氢氧化铵(tmah,25%甲醇溶液)为衍生化试剂的热辅助-在线甲酯化后的气质联用仪(gc-ms)检测分析。结果表明,神华长焰煤大分子结构中含有c2~28烷基侧链,c2~22的连接芳环的烷基桥链,有相对较多的醚键链接的芳环结构存在,芳环缩合程度相对较低(主要以含有2~4个苯环的共轭结构为主),有较多的醚键链接的芳环结构及羟基(-oh)、羰基(=c=o)和甲氧基(-och3)等形式含氧基团以及含硫和氮等杂原子化合物的存在。
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