CO2 sorption/desorption cycling performance of Mg-Al-CO3 LDH-6M

https://doi.org/10.3390/catal7040105

“In addition, the cycling stability of the synthesized LDH-derived CO₂ sorbent was also studied, and Mg-Al-CO₃ LDH-6M was taken as the representative. The sorption was performed at 200 °C in pure CO₂ flow, and the desorption was performed at 400 °C in pure N₂, both of which were performed for 30 min. Figure 9b shows that the Mg-Al-CO₃ LDH-6M-derived sorbent has an excellent cycling stability during the fifteenth cycle. Almost no change was observed and the CO₂ sorption capacity remained at 1.26 wt %. To summarize, we can conclude that via the newly developed environmentally benign synthesis strategy, two types of high-temperature CO₂ sorbents, Li₄SiO₄ and LDH, can be obtained from the cheap raw material vermiculite, and their performance can be tuned by optimizing the synthesis procedure and parameters.”

“Figure 9. (b) CO₂ sorption/desorption cycling performance of the Mg-Al-CO₃ LDH-6M sample.”