It is a promising way for CO2 capture and sequestration by hydrates crystallization. In this study, the characteristics of CO2 hydrate formation are investigated in a small scale dynamic reactor under pressure conditions from 2.0-3.5 MPa and temperature varied between 0.5-4.0Â?C. The effects of supercooling degree and pressure on hydrates formation were discussed. Hydrates formation can be completely finished within 150 min and the final pressure-temperature points of system are just located on the hydrates equilibrium curve. The induction time is short which increases with the decreasing of supercooling degree and increasing of pressure. CO2 hydrate shows a high gas storage capacity at a pressure of 2.5MPa and a temperature of 0.5Â?C.