Different ratios of Li and Na were investigated for the development LiNaZr adsorbents, which were prepared through simple impregnation (https://doi.org/10.1016/j.jece.2019.102927). The addition of Na showed insignificant influence on the capacity of CO2 capture (figure (a) below), when the concentration of CO2 was high (50%). However, when the concentration of CO2 was 10% (right figure (b)), the adsorbent containing more Na demonstrated enhanced Co2 capture kinetics, although the final capacity of CO2 capture was still lower than the adsorbent with more Li.
Figure – CO2 capture using LiNaZr adsorbents; (a) 50% CO2; (b) 10% CO2; CO2 capture temperature – 500 °C; CO2 desorption temperature – 700°C. https://doi.org/10.1016/j.jece.2019.102927