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Study on changes in pore structure of gas coal during water absorption using synchrotron radiation SAXS.

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Title: Study on changes in pore structure of gas coal during water absorption using synchrotron radiation SAXS.
Authors: Shen, Zijing1,2 (AUTHOR), Li, Xia1,2 (AUTHOR), Ji, Xiaolan2,3 (AUTHOR), Liu, Jiahao2,4 (AUTHOR), Wu, Haijuan2 (AUTHOR), Cui, Beibei1 (AUTHOR), Kong, Jiao1 (AUTHOR), Wang, Meijun1 (AUTHOR) wangmeijun@tyut.edu.cn, Chang, Liping1 (AUTHOR), Chen, Jiangang5 (AUTHOR), Li, Dongfeng6 (AUTHOR), Li, Zhihong2 (AUTHOR) lzh@ihep.ac.cn
Source: International Journal of Coal Preparation & Utilization. 2026, Vol. 46 Issue 5, p1214-1225. 12p.
Subject Terms: *Microstructure, *Small-angle X-ray scattering, *Capillary flow, *Porosity, *Coalbed methane, *Diffusion control, *Percolation, *Coal
Abstract: The water absorption behavior of coal significantly impacts its storage, processing, and utilization performance; however, the dynamic evolution characteristic and mechanism of its micro-pore structure and framework remains insufficiently studied. In this study, synchrotron radiation SAXS technology is employed to dynamically characterize the microstructural changes of gas coal during the water absorption process. The experiment reveals the progressive stabilization of the pore network, from the filling of small pores to the overall network stabilization, highlighting the staged characteristics of water absorption behavior. The early stage is dominated by capillary-driven rapid filling, while the later stage is governed by diffusion mechanisms, leading to gradual stabilization of the microstructure. This study provides insights into the microstructural characteristic and mechanism of gas coal during water absorption, offering a new perspective for water regulation in coal storage and processing. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 193489583
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Study on changes in pore structure of gas coal during water absorption using synchrotron radiation SAXS.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Shen%2C+Zijing%22">Shen, Zijing</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Xia%22">Li, Xia</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ji%2C+Xiaolan%22">Ji, Xiaolan</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Jiahao%22">Liu, Jiahao</searchLink><relatesTo>2,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Haijuan%22">Wu, Haijuan</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cui%2C+Beibei%22">Cui, Beibei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kong%2C+Jiao%22">Kong, Jiao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Meijun%22">Wang, Meijun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wangmeijun@tyut.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Chang%2C+Liping%22">Chang, Liping</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Jiangang%22">Chen, Jiangang</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Dongfeng%22">Li, Dongfeng</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Zhihong%22">Li, Zhihong</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> lzh@ihep.ac.cn</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Coal+Preparation+%26+Utilization%22">International Journal of Coal Preparation & Utilization</searchLink>. 2026, Vol. 46 Issue 5, p1214-1225. 12p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Microstructure%22">Microstructure</searchLink><br />*<searchLink fieldCode="DE" term="%22Small-angle+X-ray+scattering%22">Small-angle X-ray scattering</searchLink><br />*<searchLink fieldCode="DE" term="%22Capillary+flow%22">Capillary flow</searchLink><br />*<searchLink fieldCode="DE" term="%22Porosity%22">Porosity</searchLink><br />*<searchLink fieldCode="DE" term="%22Coalbed+methane%22">Coalbed methane</searchLink><br />*<searchLink fieldCode="DE" term="%22Diffusion+control%22">Diffusion control</searchLink><br />*<searchLink fieldCode="DE" term="%22Percolation%22">Percolation</searchLink><br />*<searchLink fieldCode="DE" term="%22Coal%22">Coal</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The water absorption behavior of coal significantly impacts its storage, processing, and utilization performance; however, the dynamic evolution characteristic and mechanism of its micro-pore structure and framework remains insufficiently studied. In this study, synchrotron radiation SAXS technology is employed to dynamically characterize the microstructural changes of gas coal during the water absorption process. The experiment reveals the progressive stabilization of the pore network, from the filling of small pores to the overall network stabilization, highlighting the staged characteristics of water absorption behavior. The early stage is dominated by capillary-driven rapid filling, while the later stage is governed by diffusion mechanisms, leading to gradual stabilization of the microstructure. This study provides insights into the microstructural characteristic and mechanism of gas coal during water absorption, offering a new perspective for water regulation in coal storage and processing. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1080/19392699.2025.2495972
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 12
        StartPage: 1214
    Subjects:
      – SubjectFull: Microstructure
        Type: general
      – SubjectFull: Small-angle X-ray scattering
        Type: general
      – SubjectFull: Capillary flow
        Type: general
      – SubjectFull: Porosity
        Type: general
      – SubjectFull: Coalbed methane
        Type: general
      – SubjectFull: Diffusion control
        Type: general
      – SubjectFull: Percolation
        Type: general
      – SubjectFull: Coal
        Type: general
    Titles:
      – TitleFull: Study on changes in pore structure of gas coal during water absorption using synchrotron radiation SAXS.
        Type: main
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            NameFull: Shen, Zijing
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            NameFull: Li, Xia
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          Dates:
            – D: 01
              M: 05
              Text: 2026
              Type: published
              Y: 2026
          Identifiers:
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              Value: 46
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            – TitleFull: International Journal of Coal Preparation & Utilization
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