Microscale Research on Effective Geosequestration of CO₂ in Coal Reservoir: A Natural Analogue Study in Haishiwan Coalfield, China

Figure 8

Infrared spectrogram of functional group region (4000–1500 cm⁻¹) and the fingerprint region (1500–400 cm⁻¹) for oil shale before and after SCCO₂ treatment.

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