典型溶剂精制煤(SRC)的组成和结构——Ⅲ.极性馏份的结构分析  

COMPOSITION AND STRUCTURE OF SOME TYPICAL SOLVENT REFINED COALS——Ⅲ STRUCTURAL ANALYSES OF POLAR FRACTIONS

作　　者：陈金玲[1] 李栢龄 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》1990年第2期170-176,共7页Journal of Fuel Chemistry and Technology

摘　　要：用核磁共振平均结构表征法(包括硅烷化样品以~1H-n.m.r.测定羟基含量)和FTIR法研究了大同煤SRC和抚顺燭煤SRC各极性馏份的结构特征。结果表明,这些极性馏份的基本烃分子结构(即排除了杂原子以外的碳氢键结构)与相应芳烃馏份的平均分子结构十分相似。羟基含量的测定表明,酚羟基占样品氧含量的一半左右,为最主要的极性功能团。其他次要含氧基团根据红外光谱测定为芳香酮、芳香醚及脂肪酸的芳香脂。在某些样品中检出少量羧酸羰基可能与分离后样品的空气氧化有关。The structural characteristics of polar fractions of DT-and FS-SRC are investigated using ^(13)C and ~1H-n.m.r. average structure method (including measurement of hydroxyl content from silylated samples based on ~1H-n.m.r.). Results show that the basic hydrocarbon skeleton (namely those hydrocarbon bonding structure excluding hetero-atoms) of average molecules of samples are quite similar with those of respective aromatic fractions. For instance, the basic aromatic nuclear skeleton of DT-3 is similar to that of DT-2B and DT-5 is corresponding to DT-2A. All FS-polar fractions has the aromatic cluster of cata-condensation or open-ring structures. The amount of hydroxyl group in a sample accounts for about one half of the total oxygen, it is the most important functional group. Other oxygen-containing groups based on FTIR analysis are aromatic ketones, aromatic ethers and aromatic esters of aliphatic acids. The minor content of carboxyl group detected in several samples may possibly be related to atmospheric oxidation during sample reservation.

关 键 词：煤 溶剂精制煤 组份 结构 硅烷化 

分 类 号：TQ533.1[化学工程—煤化学工程]