Abstract: The influences of CO2 on global climate change and the necessity of CO2 sequestration are reviewed，and the main approaches to CO2 separation and sequestration are introduced. For the flue gas from coal-burners，the adsorptive properties of physical and chemical adsorbent materials including carbon-based adsorbent，zeolite，metal oxide adsorbent，hydrotalcite-like compounds and lithium compounds for CO2 adsorption at a high temperature are compared in this review. Adsorption properties of the novel adsorbent Lithium zirconate (Li2ZrO3)，one of the most promising materials for the sequestration and separation of CO2 from flue gas at a high temperature are critically discussed. The influence factors include CO2 sorption rate，reaction temperature，zirconia particle size，the variety and quantity of the doped compound，optimum conditions for synthesis of lithium zirconate by the solid state reaction etc. The promising and significant research areas in the future are presented.