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. |
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| 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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| 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] |
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| ISSN: | 19392699 |
| DOI: | 10.1080/19392699.2025.2495972 |
