Synthesis and CO2 sorption kinetics of lithium zirconate

Lithium zirconates are materials known for its regenerable CO2 sorption at high temperatures. Lithium zirconate (Li2ZrO3) was synthesized from lithium hydroxide and zirconyl nitrate using a precipitation method followed by calcination. The effect of calcination temperature on the CO2 sorption capacity of Li2ZrO3 was investigated using thermogravimetry. Lithium zirconate synthesized at 600 degrees C showed the highest CO2 sorption capacity of 22.2%, which was retained even after 10 cycles. The mechanism of CO2 sorption by Li2ZrO3 is discussed in detail. The CO2 sorption kinetics was evaluated using Avrami-Erofeev method and the desorption kinetics was studied using Kissinger method.

Automated summary

Lithium zirconates synthesized through precipitation method followed by calcination exhibit high CO2 sorption capacity at elevated temperatures and good regenerability. The CO2 sorption capacity increases with the calcination temperature.