两种溶剂精制煤(SRC)的组成和结构 Ⅱ.芳烃馏份的核磁共振波谱及FT红外光谱分析  

COMPOSITION AND STRUCTURE OF SOME TYPICAL SOLVENT REFINED COALS

作　　者：陈金玲[1] 李柏龄[1] 韩京萍[1] 钱树安[1] 

机构地区：[1]中国科学院山西煤炭化学研究所

出　　处：《燃料化学学报》1989年第3期240-247,共8页Journal of Fuel Chemistry and Technology

摘　　要：利用^(13)C-,~1H-n.m.r.(包括多脉冲自旋回波^(13)C-n.m.r.)及FT红外光谱对大同和抚顺两种煤的SRC芳烃馏份进行了分析。对芳烃样品的有关谱图进行了定性分析,并采用^(13)C-,~1H-o.m.r.联合推导平均分子结构的方法计算了各样品的平均结构参数。研究表明,两种煤SRC芳烃的组成结构有显著差别:抚顺SRC芳烃的芳核具有敞开式构型,稠合芳环数小(约3个),脂环发达。大同煤SRC衍生的两个芳烃馏份都具有较高的芳香度,其中DT-2A环数3-4,缩合度高,含较多的芘和荧蒽的同系物,DT-2B为6芳环的渺位缩合多环芳烃。~1H-,^(13)C-NMR (including multi-pulse sequence spin-echo-technique) and FTIR spectroscopic methods are used to characterize aromatic fraction sin SRC from Fushun (FS) and Datong (DT) coals. The average molecular structural parameters and models for the samples studied are derived from ~1H-,^(13)CNMR spectra coupled with molecular weight and elemental analysis data. Results show that substantial distinction exists between the molecular composition and structure of aromatic fractions of two SRC samples.The aromatic cluster of FS2 sample possesses openring structure with few aromatic rings (about 3 rings in a molecule) and abundant naphthenic groups.The aromaticity of aromatic fractions of both DT2A and DT2B samples is relatively high.The former has 4 rings with higher condensation degree (typical representa-tives are pyrene and fluoranthene homologues), whereas the latter is composed of six-ring cata-condensed polycyclic aromatics.

关 键 词：煤 精制 溶剂法 液体燃料 芳烃馏份 

分 类 号：TQ517.4[化学工程]