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- W3171918962 abstract "To investigate the erosion laws of coal dissolved in organic and inorganic acids, in this study, hydrofluoric and acetic acids with different concentrations were used to erode coal. XRD, FTIR, contact angle, and SEM experiments were conducted to analyze the differences and similarities between the organic and inorganic acids on the erosion of coal and to analyze the relationship between the contact angle and the organic functional group content. The results showed that the organic acids mainly destroyed the lamellae along the stacking height of the crystals, whereas the inorganic acids mainly destroyed the lamellae along the diameter of the crystals. The organic and inorganic acids show a favorable effect on the aliphatic groups. However, the organic acids have a poor effect on the aromatic groups, whereas the inorganic acids have a poor effect on the hydroxyl groups. The organic acids can effectively remove the surface particles on the coal, thus making the surface smoother. After inorganic acid erosion, the coal surface breaks down and affects the structure of the coal. The inorganic acids were found to be more effective on the aliphatic and aromatic groups, making them more suitable to improve the wettability of coal." @default.
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- W3171918962 date "2021-10-01" @default.
- W3171918962 modified "2023-10-18" @default.
- W3171918962 title "Comparative experimental study on the effects of organic and inorganic acids on coal dissolution" @default.
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- W3171918962 doi "https://doi.org/10.1016/j.molliq.2021.116730" @default.
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