This manuscript explores the CO2/N2 separation performance by experiment and molecular simulation. Generally, this manuscript is well-written and easy to follow. I recommend publishing after clarifying these issues.
1. The word “Abstract” should be deleted from the Abstract.
2. Although the equilibrium adsorption isotherm fitted well between the experiment and simulation, the huge difference in breakthrough isotherm was noticed in Figure 6. It was understood that the difference exists in the experiment and molecular simulation, in which the sensitivity of pressure, temperature, column length, velocity, concentration, and void fraction were investigated in Figure 7 and explained some points. However, in my opinion, the transport diffusion and particle size of MOFs play a more important role in determining their dynamic adsorption performance, such as breakthrough isotherm. Does the author can provide any information about these properties? Such as molecular dynamic simulation of flue gas and experiments determining diffusivity.