摘要
用硅胶色谱柱将平朔烟煤吡啶抽提物分离成八种不同馏分。通过对这些馏分的数量及其元素分析,平均分子量测定,~1H-NMR 谱图分析,探讨了煤中小分子相的存在形态、氢碳原子分布、芳碳率及芳环被取代程度等,为研究平朔烟煤分子结构提供了精细的结构信息。
Some fractions with low molecular weight have been obtained by silica gel chromatography separation of Pingshuo coal extracts.The amount,constitution and struc- ture of fractions are discussed in detail ,such as existing form of small molecular phase,distri- bution of hydrogen and carbon,aromaticity and degree of substitution of aromatic rings, based on^1H-NMR spectroscopy,average molecular weight measurement and elemental anal- ysis.This study indicates that small molecular phase in macromolecules of Pingshuo coal mainly consists of three parts:some long straight-chain hydrocarbon;a little heterocyclic compounds;more aromatics with alkyl substituents.It provides more structure information for Pingshuo coal macromolecular structure investigation.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
1993年第3期293-297,共5页
Journal of Fuel Chemistry and Technology
基金
国家自然科学基金
山西省青年科学基金共同资助项目
关键词
小分子相
分子结构
烟煤
small molecular phase
molecular structure
silica gel chromatography
separation
~1H-NMR
