青川天然沥青的组成及其沥青质结构参数研究  

Research on Composition of Qingchuan Natural Asphalt and Structural Parameters of Asphaltene

作　　者：樊亮 魏建明[2] 胡家波 

机构地区：[1]高速公路养护技术交通行业重点实验室,济南250031 [2]中国石油大学(华东)化学化工学院,山东青岛266555

出　　处：《公路交通技术》2015年第2期40-44,共5页Technology of Highway and Transport

基　　金：山东省交通科技项目(2005Y013;2010Y20)

摘　　要：利用化学分析、X射线衍射分析、红外光谱等方法对四川青川天然沥青的组成及其沥青质晶体结构进行研究。结果表明,该天然沥青样品富含沥青质,矿物质含量较高,属于沥青矿中的脆沥青类;其沥青质X射线衍射图谱中重叠的γ、(002)峰可以用Gauss、Lorentz两种分峰方式进行有效分离,得到的沥青质结构参数与石油沥青质有较大差别,主要体现在芳碳率较小,芳香层堆积平均高度较低,有效芳香层数要比石油沥青质小得多,约为2层左右。This paper researches composition of Sichuan Qingchuan natural asphalt and crystal structure of its asphaltene by mean of methods including chemical analysis,X -ray diffraction analysis and infrared spectrum,etc.The results show that the sample of natural asphalt is rich in asphaltene and contains high mineral substances and belongs to grahamite in asphalt mineral;the overlapped γand （002）peak in X -ray diffraction spectrum of its asphaltene can be effectively separated by Gauss and Lorentz peak separating modes,and the obtained structural parameters of asphaltene are quite different from petroleum asphaltene, mainly reflected in small aromatic carbon rate,low average accumulative height of aromatic layer,and much less effective aromatic layers than petroleum asphaltene,approximately 2 layers.

关 键 词：天然沥青 沥青质 结构参数 X 射线衍射分析 

分 类 号：U414[交通运输工程—道路与铁道工程]