煤焦油精制软沥青组成及结构的表征  

Compositions and Structure Characterizations of Coal Tar Refined Soft Pitch

作　　者：高丽娟[1,2] 赵雪飞[2] 赖仕全[2] 程俊霞[2] 鲁毅强[1] 

机构地区：[1]北京科技大学,北京100083 [2]辽宁科技大学,辽宁鞍山114051

出　　处：《光谱学与光谱分析》2009年第8期2152-2156,共5页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(20407003);2007年辽宁省微纳米技术及系统重点实验室开放基金项目(2007-5);2007年辽宁省教育厅科学技术基金项目(20060433)资助

摘　　要：以高温煤焦油为原料,蒸馏至280℃后得到煤焦油软沥青,经溶剂萃取沉降方法获得精制软沥青,软化点为32℃(环法)。索氏抽提法测得的族组成为:庚烷可溶物53.67%,庚烷不溶甲苯可溶物39.47%,甲苯不溶物6.86%,喹啉不溶物0.06%。相对平均分子量是292,平均分子式为C22.22H16.32N0.12S0.06O0.33,杂原子含量总和小于1。红外分析结果表明:其杂原子氧以R—O—R,Ar—O—R结构存在,杂原子氮以R—NH—R和N结构存在,且以N为主。采用改进的Brown-Lander模型得其平均结构为五元稠环;紫外分析表明,线性排列为主、面性排列为辅,即样品的化学结构应以渺位缩合为主,迫位缩合为辅。High temperature coal tar was used as raw materials, and was distilled to 280℃ for getting coal tar soft pitch. Then refined soft pitch was obtained by solvent extracting and subsequent settlement method. Its soft point was 32℃ ; the group compositions consisted of 53.67% heptane soluble, 39.47% heptane insoluble but toluene soluble, 6.86% toluene insoluble and 0. 06% quinoline insoluble. The relative average molecular weight was about 292. Its average molecular formula was C22.22 H16. 32 N0.12 S0.06O0.33 ; the total content of heteroatom was less than 1. IR analytic results showed that its heteroatom O existed in the R-O-R and Ar-O-R structure; its heteroatom N existed in the R-NH-R and -N=, with the latter being primary. Its average structure was obtained by improved Brown-Lander model： five-membered condensed rings. UV analysis indicated that the majority was linear arrangement, and the minority was surface arrangement; namely, the chemical structure of the samples was mainly the cata-condensed structure, while the minority was peri-condensation.

关 键 词：煤焦油精制软沥青 族组成 平均结构 

分 类 号：TQ52[化学工程—煤化学工程]