Table 1.

The ideal selectivity and separation factors of small gas molecules and light hydrocarbons over the ED-GO@PSSHF membrane (ΔP = 2 bar, room temperature)

Ideal Selectivity (row/col.)	H2	CO2	N2	CH4	C2H4	C2H6	C3H6
	(0.29 nm)	(0.33 nm)	(0.37 nm)	(0.38 nm)	(0.39 nm)	(0.39 nm)	(0.43 nm)
CO2	4.1
(0.33 nm)a
N2	2.9	0.7
(0.37 nm)
CH4	2.3	0.6	0.8
(0.38 nm)
C2H4	6.1	1.5	2.1	2.6
(0.39 nm)
C2H6	10.1	2.5	3.6	4.3	1.7
(0.39 nm)
C3H6	1949.2 (361.5)b	478.9	683.8	836.0 (249.7)b	319.1 (119.6)b	192.3 (84.6)b
(0.43 nm)
C3H8	3366.8 (378.7)b	827.2	1181.1	1443.9 (234.7)b	551.1 (121.8)b	332.2 (121.2)b	1.7
(0.43 nm)

^aThe kinetic diameter of the responding molecules

^bThe separation factors obtained from the binary gas mixture permeation