Table 3 Porosity of coal samples before and after solution treatment.

From: Effects of surface tension and contact angle on pore structure development of coal samples under chemical solution erosion

Numbers

1#

2#

3#

4#

5#

6#

Pre-porosity(%)

8.3599

8.8154

9.5707

10.1543

10.1496

11.3868

Post-porosity(%)

10.3880

11.1429

12.1633

12.7909

13.2071

14.4585

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