Effects of Oxygen Element and Oxygen-Containing Functional Groups on Surface Wettability of Coal Dust with Various Metamorphic Degrees Based on XPS Experiment.

J Anal Methods Chem · 2015 · PMC4518175 · PMID 26257980

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an increasing trendno p-value reported

Compared with the elemental analysis results, the O/C ratio on the surface of all the coal samples shows an increasing trend, indicating that oxygen element is widely distributed on coal surface rather than the whole volume of coal dust.

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