Synthesis and CO₂-absorption properties of lithium zirconate

With nanometer-sized tetragonal ZrO₂ and lithium carbonate as starting materials, Li₂ZrO₃ absorbents were prepared by high-temperature solid-state reaction. The crystal structure of the Li₂ZrO₃ absorbents was studied by comparison of their X-ray diffraction (XRD) patterns. The microscopic morphologies of absorbents were viewed by a scanning electron microscopy (SEM). Their CO₂-absorption abilities were measured with a thermogravimetric analyzer (TG). The experimental results show that absorbed temperature influences CO₂-absorption properties of Li₂ZrO₃, which exhibits very good ability to absorb CO₂ at 500°C. The CO₂ flux, Li₂ZrO₃ sample weight and calefactive rate also have an influence on the CO₂ absorption ability of Li₂ZrO₃.