首页> 中文期刊> 《地球科学前沿:英文版》 >Nano-to micro-pore characterization by synchrotron radiation SAXS and nano-CT for bituminous coals

Nano-to micro-pore characterization by synchrotron radiation SAXS and nano-CT for bituminous coals

         

摘要

Considering the complementarity of synchrotron radiation SAXS and nano-CT in the pore structure detection range,synchrotron radiation SAXS and nano-CT methods were combined to characterize the nano-to micropore structure of two bituminous coal samples.In mesopores,the pore size distribution curves exhibit unimodal distribution and the average pore diameters are similar due to the affinity of metamorphic grades of the two samples.In macropores,the sample with higher mineral matter content,especially clay mineral content,has a much higher number of pores.The fractal dimensions representing the pore surface irregularity and the pore structure heterogeneity were also characterized by synchrotron radiation SAXS and nano-CT.The fractal dimensions estimated by both methods for different pore sizes show consistency and the sample with smaller average pore diameters has a more complex pore structure within the full tested range.

著录项

  • 来源
    《地球科学前沿:英文版》 |2021年第2期|P.189-201|共13页
  • 作者单位

    Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources China University of Mining and Technology(Beijing) Beijing 100083 ChinaSchool of Energy and Mining Engineering China University of Mining and Technology(Beijing) Beijing 100083 China;

    School of Energy and Mining Engineering China University of Mining and Technology(Beijing) Beijing 100083 China;

    School of Civil and Resource Engineering University of Science and Technology Beijing Beijing 100083 ChinaKey Laboratory of Deep Earth Science and Engineering(Ministry of Education) Sichuan University Chengdu 610065 China;

    Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources China University of Mining and Technology(Beijing) Beijing 100083 ChinaSchool of Energy and Mining Engineering China University of Mining and Technology(Beijing) Beijing 100083 China;

    Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources China University of Mining and Technology(Beijing) Beijing 100083 ChinaSchool of Energy and Mining Engineering China University of Mining and Technology(Beijing) Beijing 100083 China;

    Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources China University of Mining and Technology(Beijing) Beijing 100083 ChinaSchool of Energy and Mining Engineering China University of Mining and Technology(Beijing) Beijing 100083 China;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 矿床学;
  • 关键词

    synchrotron radiation; SAXS; nano-CT; pore size distribution; fractal; coal;

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