Influence of Ionic Liquid Structure on Supported Ionic Liquid Membranes Effectiveness in Carbon Dioxide/Methane Separation

Table 6

Permeability of carbon dioxide and methane through SILMs (with PP support) at different temperatures.

Ionic liquid	Temperature, K	Permeability, barrer		Viscosity of ionic liquid, mPa⋅s
		Carbon dioxide	Methane
	283	749 ± 14	n/a	56.36 ± 1.93
[EMIM][Tf2N]	288	811 ± 14	n/a	51.55 ± 1.27
	298	1888 ± 117	101 ± 1	40.40 ± 1.80
	283	636 ± 69	n/a	44.77 ± 0.63
[EMIM][TfO]	288	684 ± 31	n/a	42.26 ± 0.61
	298	1076 ± 111	60 ± 17	32.60 ± 1.07
[BMIM][Tf2N]	298	936 ± 26	77 ± 2	74.30 ± 0.71
[BMIM][TfO]	298	754 ± 33	43 ± 2	48.06 ± 1.95