MFI and FAU-Type Zeolites as Trapping Materials for Light Hydrocarbons Emission Control at Low Partial Pressure and High Temperature

Table 3

Equilibrium adsorption capacities (wt%) obtained at 298 K by gravimetric tests at saturation and 0.1 kPa for different HCs on HZSM-5, silicalite, and HY.

Zeolite	Ethylene		Isobutene		Toluene
	Saturation	0.1 kPa	Saturation	0.1 kPa	Saturation	0.1 kPa
HZSM-5	7.2	3.8	8.1	5.7	12.8	8.0
Silicalite	6.8	2.3	11.5	8.7	13.8	7.7
HY	5.4	1.6	22.5	14.8	17.1	7.1