树皮煤的原子力显微镜研究  

An Atomic Force Microscopy Study on "Barkinite" Liptobiolith

作　　者：焦堃[1] 姚素平[1] 张科[1] 胡文瑄[1] 

机构地区：[1]南京大学地球科学与工程学院,南京210093

出　　处：《地质论评》2012年第4期775-782,共8页Geological Review

基　　金：国家自然科学基金资助项目(批准号40973051)的成果

摘　　要：利用原子力显微镜观察了树皮煤中两种主要显微组分树皮体和镜质体表面纳米结构特征,揭示了镜质组镜质体大分子团具有网状结构的特征,而类脂组树皮体大分子团具有纤维状、颗粒状和网络状排列结构,随演化程度的提高,树皮体大分子团结构的演化依次表现为纤维状-→粒状-→不规则网状-→网状结构,镜质体则由结构松散的网状结构向高度定向排列的规则网状结构演化。利用AFM的横切面分析工具定量分析了显微组分表面的大分子结构排列,为显微组分分子结构演化和成烃机理研究提供了重要的科学依据。Utilizing Atomic Force Microscopy （AFM） to observe the surface structure of barkinite and vitrinite of ＂barkinite＂ liptobiolith in nanoscale, reveal the surface mierostruetures of barkinite and vitrinite, that is, the netlike structure of vitrinite maeromolecular clusters and the fiberlike, granular, and netlike structure of barkinite macromolecular clusters. With the increasing of maturity, the structure of barkinite maeromolecular clusters are fiberlike →granular →irregular netlike →netlike in sequence, while the structure of vitrinite macromolecular clusters change from loose, irregular network to highly orient arranged, regular network. Quantitative analyze of the structure of macromolecular cluster and arrangement in maceral by using Atomic Force Microscopy cross-section analyze tool provide a new approach to study the structure evolution of maceral molecule and hydrocarbon generation mechanism.

关 键 词：煤岩显微组分 原子力显微镜 树皮体 镜质体 结构演化 

分 类 号：P618.11[天文地球—矿床学]