Fig. 3: Propene adsorption and desorption behavior of the proton-exchanged continuous ZSM-5 film (HZ-80-F) and array-structured ZSM-5 film (HZ-20-A).

a Propene adsorption behavior as a function of time. b Propene adsorption capacity. c Propene adsorption rate in the unit of ppm min−1, as the first order derivative of C3H6 concentration change over test time. d Propene desorption behavior as a function of time. The percentage of the generated CO2 at different temperature window during desorption on the two ZSM-5 samples are displayed in the inset. Solid line: C3H6, dotted: CO, dashed: CO2, and dashed dotted: Temperature (belongs to the 2nd y-axis). Black line: HZ-80-F, and red line: HZ-20-A. The result of blank tube testing in blue line is shown as reference. Each sample was maintained at 100 °C for 30 min under a gas mixture of 333 ppm C3H6 + 12% O2/N2, then heated to 600 °C at a ramp rate of 20 °C min−1 under 12% O2/N2. Space velocity (S.V.): ~24,000 h−1. Source data are provided as a Source Data file.