塔河沥青质亚组分分离及表征

Separation and Characterization of Tahe Asphaltenes

林东浩 罗根祥 朱孟爽 黄金 齐名玉 宁爱民 许凌子

Donghao Lin Genxiang Luo Mengshuang Zhu Jin Huang Mingyu Qi Aimin Ning Lingzi Xu

辽宁石油化工大学 石油化工学院，辽宁 抚顺 113001 中国石油化工股份有限公司 大连石油化工研究院，辽宁 大连 116045

School of Petrochemical Engineering，Liaoning Petrochemical University，Fushun Liaoning 113001，China Dalian Research Institute of Petroleum and Petrochemicals，China Petroleum & Chemical Corporation，Dalian Liaoning 116045，China

采用甲苯?正庚烷法将塔河沥青质（TA）分离成重组分（TA1）和轻组分（TA2），使用扫描电镜（SEM）、X射线衍射（XRD）、傅里叶变换红外光谱法（FT?IR）和核磁共振氢谱（1H?NMR）等方法对TA、TA1和TA2进行表征，分析其表面形态、晶体结构和官能团结构等组成和结构信息。结果表明，TA具有较少的长链结构，侧链中支链化程度较高，并以甲基、乙基、丙基短支链烷基结构为主。TA经分离后得到的亚组分TA1、TA2在微观结构上存在明显差异，TA1石墨化程度最高，支链最长，芳环侧链较多，烷基侧链支化程度较差，芳香性相对较强；TA2石墨化程度较差，烷基侧链支化程度较高，芳环侧链较少，芳香性相对较弱。

Tahe asphaltene (TA) was separated into heavy component(TA1) and light component (TA2). The surface morphology, crystal structure and functional group structure of TA, TA1 and TA2 were characterized by Scanning Electron Microscope (SEM), X?ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT?IR) and 1H?Nuclear Magnetic Resonance Spectrum (1H?NMR). The results show that TA has less long?chain structure, more branched chains in side chains, and is mainly composed of short branched alkyl structure such as methyl, ethyl and propyl. Sub?components TA1 and TA2 show obviously different microstructure after separated from TA. TA1 has the highest degree of graphitization, the longest branched chain, more side?chains of aromatic ring, less branched chains of alkyl side?chains and relatively strong aromaticity, while TA2 has lower degree of graphitization, more branched chains of alkyl side?chains, less side?chains of aromatic ring and relatively weak aromaticity.

中国石化资助课题(118009?1)

10.3969/j.issn.1006-396X.2022.01.003