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Xianfeng lignite (XL) was subjected to sequential thermal dissolution (TD) in cyclohexane at 200–320°C. The yields of soluble portions (SPs) decreased with raising temperature from 200 to 260°C, but then increased with further raising the temperature. The SPs were analyzed with a Fourier transform infrared spectrometer, gas chromatograph/mass spectrometer, and atmospheric pressure solid analysis probe/time-of-flight...
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