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基于色谱方法的煤沥青指纹图谱构建
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作者单位
许森,许多,金丹,王守凯,张维冰 1.华东理工大学上海市功能性材料化学重点实验室2.中钢集团鞍山热能研究院有限公司煤焦油系新型材料制备技术国家地方联合工程中心 
基金项目:国家自然科学基金资助项目(21974045)
中文摘要:煤沥青成分极其复杂,其中含有分子量较大的多环芳烃及其氧化产物等组分。不同来源的原料煤及生产工艺得到的煤沥青在芳构化程度、组成、性质、分子结构等方面皆差别很大。该文分别采用气相色谱-质谱(GC-MS)、裂解/气相色谱-质谱(Py/GC-MS)和高效液相色谱(HPLC)手段,为煤沥青指纹图谱库的构建发展了普适、稳定、简单的分析方法。在GC-MS方法中采用常用的HP-5MS柱,在线性温度梯度条件下分析,得到33个组分的色谱图,方法对不同样品的稳定性良好。采用裂解/气相色谱-质谱方法研究探讨了较高温度下组分结构和组成的变化,对于沥青产品的加工以及老化研究具有借鉴意义。在HPLC方法建立过程中,采用最常用的C18柱反相色谱分离模式,以甲醇/水为流动相,在线性梯度条件下建立方法,针对不同样品可以得到41个组分的稳定色谱峰。基于该文的方法,可为进一步建立煤沥青的指纹谱图库,以及进一步完善煤沥青的评价方法,开发煤沥青的新用途提供理论基础数据。
中文关键词:煤沥青  指纹图谱  气相色谱-质谱联用(GC-MS)  裂解  高效液相色谱(HPLC)
 
Construction of Coal Asphalt Fingerprint Based on Chromatography
Abstract:he composition of coal pitch is extremely complex,which contains polycyclic aromatic hydrocarbons with large molecular weight and their oxidation products.The coal pitch obtained from different coal raw material sources and production processes vary greatly in terms of aromatization degree,composition,property,molecular structure,etc.In this paper,gas chromatography mass spectrometry(GC-MS),pyrolysis/gas chromatography mass spectrometry(Py/GC-MS) and high performance liquid chromatography(HPLC) were used to develop a universal,stable and simple analytical method for the construction of coal asphalt fingerprint library.In the development of GC-MS method,the HP-5MS column was used,and the method was established under a linear temperature gradient.A chromatogram for 33 components was obtain by this method,which had good stability for different samples.The Py/GC-MS method was used to investigate the changes in component structure and composition at higher temperatures,which may be used for a reference for the processing and aging research of asphalt products.In the development of the HPLC method,the most commonly used C18 column reversed phase chromatographic separation mode was adopted,which was established with methanol and water as mobile phases under linear gradient conditions.The developed method could be used to obtain stable chromatographic peaks for 41 components in different samples.Based on the methods above,a fingerprint spectrum library for coal pitch could be established,which provides theoretical basis data for further improving the evaluation on coal pitch and developing new uses of coal pitch.
Key Words:coal tar pitch  fingerprint  gas chromatography-mass spectrometry(GC-MS)  pyrolysis  high-performance liquid chromatography(HPLC)
引用本文:许森,许多,金丹,王守凯,张维冰.基于色谱方法的煤沥青指纹图谱构建[J].分析测试学报,2020,39(9):1092-1097.
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