Figure 4

(a) N₂ adsorption–desorption isotherms at − 196 °C, and (b) pore size distribution of RHA, MIL-101(Cr), RHA-MIL-101(Cr)-I, and RHA-MIL-101(Cr)-II obtained from N₂ adsorption isotherm. (c,d) Micropore size distribution of MIL-101(Cr), RHA-MIL-101(Cr)-I, and RHA-MIL-101(Cr)-II obtained from CO₂ adsorption isotherm at 0 °C.