用核磁共振和红外光谱构造煤抽提物的结构模型

CONSTRUCTION OF STRUCTURE MODEL FOR COAL EXTRACTS BASED ON NMR AND FTIR SPECTRA

用￣（１３）Ｃ－ＮＭＲ和￣１Ｈ－ＮＭＲ联合解析法和￣１Ｈ－ＮＭＲ／ＴＩＲ解析法分别求取了平朔煤镜质组吡啶抽提物中七个馏分的平均分子结构参数，并参考其它化学分析和测试结果，构造了以上七个馏分的平均分子结构模型。结果表明：平朔煤镜质组吡啶抽提物中存在着脂肪取代形式各异、芳碳率、芳环数不同，杂原子形式有别的各种芳烃混合物。

Seven pyridine-extracting fractions of vitrinite from Pingshuo bituminous coalwere characterized in terms of hypothetical average molecular structure. Using ￣(13)C-NMRanalysis, the average molecular structrue parameters of PM_2～PM_7 fractions were derived.Based on these parameters and referred to the data of chemical analyses, their structruemodels were constructed. Results indicate that the pyridine extracts of vitrinite fromPingshuo coal are mixtures of aromatic compounds. Which are different with respect to thearomaticity, ring number, type of both aliphatic substitution and oxygen-functional group.