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Figure 2: Materials characterizations and experimental studies of gas hydrate formation process. N2 adsorption/desorption isotherms on (a) CMK-3 and (b) AC at 77 K with DFT pore size distribution; (c) TEM image of CMK-3 (inset: powder XRD pattern) and (d) SEM image of AC; CO2 adsorption isotherms with different water ratios (Rw) at 273 K on (e) CMK-3 and (f) AC; CO2 dynamic sorption on (g) CMK-3 and (h) AC with different Rw at 273 K with an initial pressure of 30 atm. The filled points are corresponding to CO2 uptake; blank points are corresponding to temperature.