Specific surface area and porosity properties of ZSM-5 zeolite support and granular ready-to use ICZ were determined by N2 adsorption–desorption (Yan et al. 2015). Figure 8 shows N2 adsorption–desorption isotherms of the samples and Table 2 contains the related BET surface area and pore properties. Evidently, the volume of N2 adsorbed increases with increasing relative pressures for all of isotherms, due to the filling of micropores in the ZSM-5 zeolite support and granular ICZ nano-adsorbent. The volume of N2 adsorbed increases continually when the relative pressures increase, which may happen following multilayer adsorption of N2. The hysteresis phenomenon demonstrated in Figure 8 proved the existence of mesopores in both ZSM-5 zeolite and granular ICZ.