淮北煤两级分次萃取物的红外光谱分析  

FTIR Analysis of Extracts from Huaibei Coal by Fractional Extraction

作　　者：郭振兴[1] 高春楠[1] 张春明[1] 贾利国[1] 张跃弟[1] 孙昊[1] 江春[1] 秦志宏[1] 

机构地区：[1]中国矿业大学,徐州221008

出　　处：《煤化工》2006年第6期32-35,共4页Coal Chemical Industry

基　　金：国家自然科学基金(50474066);中国矿业大学科学基金(B200405)

摘　　要：为了揭示煤中可溶组分的存在方式和溶出行为,分别以石油醚和CS2为溶剂对淮北煤进行了按时间段分次取样的两级索氏萃取,并采用FTIR对萃取物进行了定性和定量分析。结果表明,可萃取组分的溶出具有时序性和阶段性特点;萃取物重要基团FTIR吸收峰随时间变化均呈波型曲线规律;石油醚可萃取组分中存在较多较短链的脂肪族组分和两部分特定链长的-OH(-NH)类物质;CS2可萃取物中则有两种特定链长的脂肪族组分和一种特定链长的-OH(-NH)类物质。To reveal the existing state and dissolution behavior of the solvent-soluble fractions in the coal, Huaibei coal was extracted with petroleum ether and then with CS2 using fractional sample in the Soxhlet extractor. FTIR analysis of the extracts was carried out qualitatively and quantitatively. The results show that the content of soluble fractions is more than that of petroleum ether-soluble fractions. The characteristics of CS2-soluble fractions are sequential and periodical changes. FTIR absorption peaks of some important radicals in the extracts show wave curve against time. Two series of -OH （-NH） containing components of special chain-length and many short-chain aliphatic components exist in the petroleum ether-soluble fractions. There are two series of aliphatic components of special chain-length and one series of - OH（-NH） containing components of special chain-length exist in the CS2-soluble fractions.

关 键 词：煤 分级萃取 石油醚 CS2 红外光谱 

分 类 号：TQ533[化学工程—煤化学工程]