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August 2, 2026Fuel Processing TechnologyOpen Access

Regulation of underground coal gasification by supercritical CO2 modification: synergistic evolution mechanism of pores, surface, and chemical states

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Authors

DWDaxing WangJTJijun TianSYShuguang Yang

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Overview

Randomized trial investigates the effect of supercritical CO2 on gasification efficiency in coal, suggesting enhanced reactivity.

Key Points

  • This study aims to explore the effects of supercritical CO2 treatment on the gasification efficiency of coal.
  • Multi-scale characterization was employed to analyze coal structure and surface changes.
  • Gasification performance was tested under varying high to medium temperature conditions.
  • Microscopic analysis assessed chemical evolution of coal functional groups.
  • Micropore volume and specific surface area increased, enhancing coal porosity.
  • Cumulative weight loss during pyrolysis was higher in modified coal (23.68%) compared to raw coal (17.02%).
  • The proportion of aromatic carbon in modified coal increased significantly to 80.37%.

Cite This Study

Wang et al. (2026) studied this question.

synapsesocial.com/papers/6a6eea811b0468a7eeab2bfdhttps://doi.org/10.1016/j.fuproc.2026.108552
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