Adsorption of Carbon Dioxide, Methane, and Nitrogen Gases onto ZIF Compounds with Zinc, Cobalt, and Zinc/Cobalt Metal Centers

Table 1

The fitting constants of the DSL equation for CH₄, N₂, and CO₂ on ZIF-8, Co-ZIF-8, and Zn/Co-ZIF-8.

Constants	Specimens
	ZIF-8			Co-ZIF-8			Zn/Co-ZIF-8
	Gas
	Nitrogen	Methane	Carbon dioxide	Nitrogen	Methane	Carbon dioxide	Nitrogen	Methane	Carbon dioxide
(mole/kg)	38359	9.58	97.28	12139	7.37	21.83	13139	8.45	42.85
(MPa^-1)
(K)	693.55	1582	5038	881.97	1535.11	2917.13	861.97	1649.61	1904.60
(mole/kg)	0	0	27.89	0	0	0	0	0	0
(MPa^-1)	0	0		0	0	0	0	0	0
(K)	0	0	0	0	0	0	0	0	0
	0.020	0.0082	1.07	2.04	0.13	0.22	1.52	0.11	0.22
(%)	8.82	3.54	7.46	34.61	12.15	27.98	45.30	9.32	18.26