摘要
矿物岩石的表面微形貌和孔隙结构是影响其地球化学行为的关键因素,从纳米尺度上表征这一特征对地球化学动力学研究和材料研发有着重要的意义。重点介绍了基于吸附等温线的分形研究方法,以表征纳米尺度上矿物或岩石表面的不规则性和微孔隙结构。从该方法的物理化学原理出发,对比分析了其适用范围和样品限制。在综合当前煤岩学、土壤学、材料学等领域的应用研究成果的基础上,提出了该分形研究方法在地球科学研究中的应用前景和发展趋势。
The surface properties and pore structure of minerals/rocks are key parameters controlling their geochemical dynamic behaviors. Characterizing these properties on the nanometer scale is greatly significant for geochemical researches and development of new materials. Fractal dimension is an integrated parameter to describe quantitatively the roughness of the surface and the pore-structure in the geological materials. A method for fractal study based on gas adsorption isotherms is introduced in this paper. The suitability and advantages are discussed in the view of the theoretical argument. Based on the review of application of this method in organic petrology, pedology and material sciences, the application prospect of this method in earth science is schemed.
出处
《地球科学进展》
CAS
CSCD
北大核心
2005年第2期201-206,共6页
Advances in Earth Science
基金
国家自然科学基金项目"泥质烃源岩初次排烃过程的流体-矿物界面地球化学研究"(编号: 40003002)
"泥质烃源岩中粘土矿物表面电化学特征与沉积有机质生排烃的关系"(编号: 40373024)资助.
关键词
分形
吸附等温线
表面
纳米尺度
Fractal dimension
Isotherm
Surface
Nano-scale.
