Fig. 4: Determination on the activation energies for adsorption and desorption of three olefins.
From: Optical imaging of the intrinsic adsorption kinetics in single zeolite nanoparticles

a The normalized optical intensity curves under different temperatures of C3H6. b, c Determination on the adsorption and desorption activation energies of a single ZSM-5 particle from the linear dependence according to the Arrhenius equation. d, e The histograms of the adsorption (Ea) and desorption (Ed) activation energies of 50 ZSM-5 particles for C2H4, C3H6, n-C4H8, respectively.