FT-IR Investigation of the Structural Changes of Sulcis and South Africa Coals under Progressive Heating in Vacuum: Correlation with Volatile Matter

<table>System used for heating coals up to 800°C: (a) cooling trap with water + salts at −15°C; (b) cooling trap with solid CO<sub>2</sub> (s) + acetone at −77°C; (c) cooling trap with liquid nitrogen at −180°C; (d), (e), (f), and (g) taps.</table>

Journal of Combustion

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Figure 1

Figure 1: FT-IR Investigation of the Structural Changes of Sulcis and South Africa Coals under Progressive Heating in Vacuum: Correlation with Volatile Matter 

Figure 1 | FT-IR Investigation of the Structural Changes of Sulcis and South Africa Coals under Progressive Heating in Vacuum: Correlation with Volatile Matter 