Analysis of the Change Feature and Action Mechanism of Coal Pore Structure under the Action of Supercritical CO₂

Table 2

Pore parameters of coking coal before and after ScCO₂ treatment in the MIP test.

Pore size	Before treatment			After treatment
	Vg (ml/g)	Sb (m^2/g)	(%)	Vg (ml/g)	Sb (m^2/g)	(%)
Macropores	0.0045	0.003	4.382	0.0110	0.012	6.178
Mesopores	0.0017	0.023		0.0051	0.053
Small pores	0.0079	1.516		0.0102	1.776
Micropores	0.0078	4.174		0.0071	3.792