Abstract: Mass-transfer properties of piperazine (PZ)/2-(2-aminoethylamino) ethanol (AEEA) blends in different mixing ratios for CO₂ capture were investigated in a wetted-wall column, so as to study the effects of mixing ratio and CO₂ loading on overall mass-transfer coefficient of the blends. Meanwhile, continuous CO₂ absorption performance of PZ/AEEA blends in different mixing ratios were analyzed in a bubbling reactor at different temperatures. Results show that PZ/AEEA blends have better performance than 30% MEA in mass-transfer properties, absorption capacity and absorption rate. CO₂ loading affects the mass-transfer properties of PZ/AEEA blends, approximately linearly dependent; while temperature significantly influences the CO₂ absorption of PZ/AEEA blends. However, the mixing ratio has less effect on both the CO₂ absorption and mass-transfer properties of PZ/AEEA blends.