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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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煤液化沥青分析表征及结构模型
, PP. 779-784
Keywords: 煤液化沥青,13c-nmr,结构模型,煤液化残渣
Abstract:
？对从煤液化残渣中萃取出的沥青类物质进行了固体13c-cp/masnmr分析、元素分析、红外光谱分析（ft-ir）和光电子能谱（xps）分析，得到煤液化沥青的芳香结构单元信息及相关结构参数信息。结果表明，煤液化沥青芳香桥碳与周碳之比为0.115，芳香碳原子的存在形式以苯结构为主；脂肪结构多以甲基和环状亚甲基形式存在；氧主要以羰基、酯基的形式存在；氮主要以吡咯的形式存在。利用结构参数和分析表征结果构建了煤液化沥青的大分子结构模型，并运用13c-nmr预测软件acd/cnmrpredictor计算了煤精制沥青大分子结构模型的13c化学位移。根据计算结果对大分子结构模型进行了修正，获得了与实验谱图吻合较好的大分子结构模型。
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