CO2 capture based on hydrate formation is intensified by an oil-in-water phase-change slurry (PCS) in which the n-tetradecane particles are taken as nucleation centers and are used to directly remove. he hydration heat through their solid-to-liquid phase change. In this study, experiments, on hydration were conducted at a temperature of 277.6 K and under isobaric pressures in the range of 2.1-2.4 MPa. All measurements were performed at a stirring speed of 450 rpm in PCSs of 25-45 wt % n-tetradecane. Two kinetics models, transport and reversible hydration, were established to regress and analyze the experimental data from the isothermal hydration of CO2 in a semibatch hydrator. For each model, the effects of pressure and PCS composition were examined in detail. As the experimental results show, the induction time before hydration initiated was less than 1 min for all rims, and the duration of the entire hydration process was,approximately 13-15 min for each measurement. Furthermore, the average hydration rate reached 197 mol m(-3) min(-1) at 2.3 MPa. in 45 wt % oil-in-water PCS, which demonstrates that the presence of n-tetradecane particles contributes significantly to the enhancement of hydrate formation rate. As the modeling results show, the parameters of the two models were determined by correlating the experimental data, and the interpretations of the measurements by the two models are satisfactory.