Study on the Evolution of Pore Structure of Anthracite Coal under Liquid-Nitrogen Freeze-Thaw Cycles.

ACS Omega · 2022 · PMC8829934 · PMID 35155956

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a decreasing trendno p-value reported

Generally, with the increase of freezing and thawing times, the growth rate of T 2 spectral area showed a decreasing trend.

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an increasing trendno p-value reported

The area of T 2 spectra of the coal sample shows an increasing trend, mainly for two reasons: First, the temperature of the coal sample suddenly drops to −196 °C from room temperature when it encounters LN 2 , and the temperature drops sharply.

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