Polymeric Gas-Separation Membranes for Petroleum Refining

Table 13

Selectivity of various membranes from VOC separation from air (or N₂ if stated).

Membrane	VOC	Selectivity	Ref.
Silicone	Acetone/N2	53	[163]
	Ethylbenzene/N2	28	[163]
	Toluene/N2	39	[163]
	Xylene/N2	50	[163]
	Freon-113/N2	32	[163]
PDMS	Acetone	11–25	[164]
	Toluene	83	[165]
	p-Xylene	68	[165]
	1,2-Dichloromethane	142	[165]
	1,2-Dichloroethane	103	[165]
Polyimide (PI 2080)	Methanol	221	[166]
	Ethanol	297	[166]
	Hexane	32	[166]
	Benzene	51	[166]
	Toluene	180	[166]
	p-Xylene	460	[166]