File Name : s1.tif

Caption : sem images of cu-btc powder

File Name : s2.tif

Caption : adsorption-desorption isotherms of n2 on cu-btc sample at 77.3 k, used for calculating the bet specific surface area, where p is the equilibrium pressure after adsorption and p0 is the saturation vapor pressure of the adsorbate at the adsorption temperature.

File Name : s3.tif

Caption : pore size distribution of cu-btc sample based on (a) pore volume and (b) pore area

File Name : s4.tif

Caption : the gcmc simulation-derived selectivity adsorption coefficients of cu-btc for co2/he (50:50) (a) at 298 k, ch4/he (50:50) (b) at 298 k and 200 k, and n2/he (50:50) (c) mixed gases at 298 k.

File Name : s5.tif

Caption : adsorption configurations of co2 (a), ch4 (b), n2 (c), and he (d) at the b site in cu-btc; atom colors: c (gray), o (red), n (blue), h (white), cu (orange), he (green).

File Name : s6.tif

Caption : adsorption breakthrough curves of ch4/n2/he (33:33:33) ternary mixed gas in cu-btc at 298 k (a), 200 k (b), and 150 k (c). the test pressure is 101.324 kpa, with the x-axis representing the ratio of time to sample mass and the y-axis representing the ratio of outlet to inlet concentration for each component.