Experimental Study for Influence of Surfactants Chemical Microstructures on Wetting Effect about Coal Dust in Tongchuan Mining Area

Figure 5

FTIR of bituminous coal dust. (a) 715 cm⁻¹–920 cm⁻¹; (b) 920 cm⁻¹–1400 cm⁻¹; (c) 1400 cm⁻¹–1720 cm⁻¹; (d) 2775 cm⁻¹–3115 cm⁻¹; (e) 3117 cm⁻¹–3700 cm⁻¹.

(a)

(b)

(c)

(d)

(e)