Ion-Exchanged ZIF-67 Synthesized by One-Step Method for Enhancement of CO₂ Adsorption

Table 6

Analysis results of CO₂ adsorption-desorption isotherms measured at 0°C.

ZIFs	Adsorbed CO2 at 0.05 bar (cm^3/g)	Undesorbed at 0.05 bar (cm^3/g)	△(Un-Ad)^1 (cm^3/g)	Adsorbed CO2 at 1.0 bar (cm^3/g)	Decrement (%)
Raw	1.56	3.87	2.31	34.44	6.7
Li-post	1.38	3.91	2.53	30.48	8.3
Li-as	1.78	5.48	3.70	48.57	7.6

¹△(Un-Ad) represents the differentials between the value of desorption and adsorption isotherms at 0.05 bar.