Influence of temperature for silica gel based CO2 capture

https://doi.org/10.3390/ma14143885

“The CO₂ uptake for the SG and the AC determined at different temperatures has been summarized in Figure 11a. The CO₂ uptake (mg/g) varied substantially with changes in temperature for both types of adsorbents and altered negatively with changes in temperature. The maximal CO₂ uptake (q) of 63.2 mg/g was obtained for the AC which can be compared to a lesser capacity of 7.43 mg/g for the SG at 298 K with 4 slpm. The lower CO₂ uptake of 50.6 mg/g was acquired at an increased temperature of 308 K. The temperature of 328 K, which was the maximum studied temperature, achieved a CO₂ uptake of 33.1 mg/g for the AC. The lowest adsorption capacity of 4.1 mg/g was exhibited by SG at the highest temperature of 328 K. All the CO₂ capture systems predicted a reduction in the uptake with an increase in temperature. ”