沥青质中官能团结构和氢键的红外光谱表征  

CHARACTERIZATION OF FUNCTIONAL GROUPS AND HYDROGEN BOND OF ASPHALTENES FROM PETROLEUM AND COAL TAR BY INFRARED SPECTROSCOPY

作　　者：肖胜玉 李茂林 孙昱东[1] Xiao Shengyu;Li Maolin;Sun Yudong(College of Chemical Engineering,China University of Petroleum(East China),Qingdao,Shandong 266580)

机构地区：[1]中国石油大学(华东)化学工程学院,山东青岛266580

出　　处：《石油炼制与化工》2022年第3期99-103,共5页Petroleum Processing and Petrochemicals

基　　金：国家自然科学基金项目(2217090014)。

摘　　要：利用傅里叶红外光谱表征渣油沥青质和煤焦油沥青质分子的官能团结构,并通过软件Origin 2018对沥青质红外光谱的氢键区、脂肪族碳氢伸缩振动区和C—O区的吸收峰进行分峰拟合。结果表明:两种沥青质均主要以碳、氢元素为主,二者杂原子的含量存在明显差异,但杂原子官能团的类型基本相同;渣油沥青质中的氢键主要是由苯环O—H与芳香醚键中的O原子、O—H自缔合形成的氢键,而煤焦油沥青质中的氢键主要是苯环O—H与芳香醚键中的O原子形成的氢键;与渣油沥青质相比,煤焦油沥青质的烷基侧链更短。The functional group structure of asphaltenes from coal tar and petroleum residue was characterized by Fourier transform infrared spectroscopy.The hydrogen bond region,aliphatic C—H stretching vibration region and C—O region were fitted by software Origin 2018.The results show that the two asphaltenes are mainly composed of carbon and hydrogen,and the content of heteroatoms in the two asphaltenes is obviously different,but the types of heteroatom functional groups are basically the same.The hydrogen bonds in coal tar asphaltenes are formed by the self-association of O atoms and O atoms in aromatic ether bonds,and the hydrogen bonds of coal tar asphaltene are formed by O atom in aromatic ether bond and O atom in benzene ring.The alkyl side chains of coal tar asphaltenes are shorter than that of residue asphaltene.

关 键 词：渣油 煤焦油 沥青质 红外光谱 氢键 官能团 

分 类 号：O657.33[理学—分析化学] TE622[理学—化学] TQ523.6[石油与天然气工程—油气加工工程]