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The aim is to investigate the effects of high-pressure CO2 on particle-fluid interactions in coal slurry systems at a molecular level.

High-Pressure CO ₂ -Induced Regulation of Particle-Fluid Interfaces in Coal Slurry Transport Systems

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The aim is to investigate the effects of high-pressure CO2 on particle-fluid interactions in coal slurry systems at a molecular level.
Constructed a Guozhuang coal macromolecular model for simulations
Conducted molecular dynamics simulations of coal with H2O, CO2, and CO2/H2O under identical conditions
Analyzed the interfacial behavior and interactions within coal slurry systems
Identified surface polarity heterogeneity, with oxygen groups as hydration sites and aromatic regions for CO2 interaction
Found strong electrostatic interactions and hydrogen bonding contributing to a rigid interfacial layer in coal-H2O systems
Demonstrated that high-density CO2 alters interfacial species distribution, reduces coal-water interactions, and enhances molecular mobility

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Examines how high-pressure CO2 regulates interfacial behavior in coal slurry systems, suggesting potential improvements in transport efficiency.

Yang et al. (2026) studied this question.

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Examines how high-pressure CO2 regulates interfacial behavior in coal slurry systems, suggesting potential improvements in transport efficiency.