Pore Size Distribution Characteristics of High Rank Coal with Various Grain Sizes
Ling-Li Liu, Zehong Cui, Jianjun Wang, Zhaohui Xia, Lijiang Duan, Yong Yang, Ming Li, Teng Li
Abstract
increased with reduced coal grain sizes. The coal matrix compressibility coefficients of the subsamples were calculated from the cumulative mercury volume curve, and the true pore volume was also modified. The modified volume of macropores does not change markedly, while the volumes of mesopores and transition pores decrease significantly, clearly indicating the coal matrix compressibility under high mercury injection pressure. The modified pore volume shows that the pore (<10,000 nm) still harbors fractal characteristics.
Topics & Concepts
MacroporeCoalPorosimetryCompressibilityVolume (thermodynamics)Mesoporous materialMineralogyMaterials scienceGrain sizePorosityParticle sizeAdsorptionVoid (composites)Composite materialChemistryThermodynamicsPorous mediumCatalysisOrganic chemistryPhysical chemistryBiochemistryPhysicsCoal Properties and UtilizationHydrocarbon exploration and reservoir analysisRock Mechanics and Modeling