High performance, cost efficient CO 2 capture technologies are desired to significantly reduce CO 2 emissions from large stationary sources, i.e., fossil fuel-fired power stations. Advanced processes based on solid regenerable sorbents that efficiently absorb CO 2 and release it in concentrated form can be less toxic, less corrosive and economically attractive relative to commercially existing solvent-based technologies. In this study, a number of binary and ternary eutectic salt-modified lithium zirconate (Li 2 ZrO 3 ) sorbents were identified and evaluated for high temperature CO 2 capture. Experiments were carried out in a thermal gravimetric analyzer under isothermal conditions at temperatures between 450 and 700 °C. Initial efforts at characterizing CO 2 uptake with pure Li 2 ZrO 3 powder at 500 °C show the reaction rate is continuous, however, very slow with time on stream. The combination of binary alkali carbonate, binary alkali/alkaline earth carbonate, ternary alkali carbonate and ternary alkali carbonate/halide eutectics to Li 2 ZrO 3 noticeably improves the CO 2 uptake rate and CO 2 sorption capacity. Binary K 2 CO 3 /MgCO 3 - and KF/Li 2 CO 3 -containing Li 2 ZrO 3 powders reveal the fastest CO 2 uptake rate at 500 °C with respect to the unmodified Li 2 ZrO 3 sample. Formation of a eutectic molten carbonate layer on the outer surface of reactant Li 2 ZrO 3 particles aids in facilitating the transfer of gaseous CO 2 during the sorption process. Multicycle thermogravimetric studies coupled with powder X-ray diffraction (XRD) analyses of the pure, binary and ternary eutectic salt promoted Li 2 ZrO 3 powders illustrate the reaction between Li 2 ZrO 3 and CO 2 is reversible. The ternary K 2 CO 3 /NaF/Na 2 CO 3 eutectic and Li 2 ZrO 3 combination at 600 and 700 °C produces the fastest CO 2 uptake rate and highest CO 2 capacity. Reaction temperature also plays a major effect on the direct carbonation rate of the modified Li 2 ZrO 3 samples.