Thermophysical Response Patterns of Pore Structures in Coals of Different Ranks
Chen Guo, Xinhang Yu, Jinxiao Yang, Junzhe Gao, Jiang Gou, Xiankuo Yang · 2026
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Description
Chen Guo and colleagues published a 2026 study of how heating changes the pore networks inside coals of varied ranks, groundwork for extracting energy from coal. Samples came from three mining regions, the Ordos Basin, western Guizhou, and the Qinshui Basin, from low to high rank. The coals were heated to 200, 300, or 400 degrees after drying and saturation. Nuclear magnetic resonance scanning mapped pore sizes and roughness as fractal dimensions.
Porosity rose in every coal after heating, most sharply in the low-rank sample, whose pores were the most temperature-sensitive. High-rank coal held off until 300 degrees before its porosity climbed. One Guizhou sample caked and swelled, ending with smaller porosity at 300 degrees than its peers. Heating converted micropores into larger mesopores and macropores, each rank favoring a size class. Pore surfaces grew smoother and better connected, The authors offer the patterns as parameters for site choice in coal extraction.
Catalog record
| CREATOR | Chen Guo, Xinhang Yu, Jinxiao Yang, Junzhe Gao, Jiang Gou, Xiankuo Yang |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 60 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |