Elevated temperature CO2 capture on nano-structured MgO–Al2O3 aerogel: Effect of Mg/Al molar ratio

Mesoporous MgO sorbent promoted with KNO3 for CO2 capture at intermediate temperatures

“…Since each study evaluated the sorption capacity under different conditions, such as the type of apparatus used, gas composition, and temperature, making direct comparisons is a challenge. However, it was clearly shown that the sorption capacities of the developed composite at 325, 350 and 375°C were relatively high compared to those reported in the intermediate temperature range including: hydrotalcite, MgO/K 2 CO 3 , MgO/Al 2 O 3 , layered double oxides (LDOs), layered double hydroxides (LDHs), layered double hydroxide supported on multi-walled carbon nanotubes (LDH/MWNT), and layered double hydroxide supported on graphene oxide (LDH/GO) [20,28,[40][41][42][43][44][45][46][47].…”

Solid sorbents for in-situ CO 2 removal during sorption-enhanced steam reforming process: A review

“…and can be easily regenerated at 500°C. And the presence of certain amounts of water vapor may have a positive effect on the total CO 2 capture capacity, which may be attributed to both physical adsorption and chemical sorption [55][56][57]. Similar to Ca-based sorbents, the total CO 2 capture capacity of MgO-based sorbent candidates appears to decrease during multiple cycles.…”

“…The sorption performances of MgO based sorbents are listed in Table 2 [55][56][57][58][59][60][61][62][63][64][65]. From observation of the literature, a fact could be found that MgO-based sorbents are effective in lowtemperature CO 2 removal in both the absence and presence of water vapor.…”

Dynamic capture of low-concentration CO2 on amine hybrid silsesquioxane aerogel

“…Recently, investigations have focused on using aerogels as new supports to form amine-based CO 2 adsorbents, due to their unique physical properties such as low density, high surface area and porosity [22][23][24][25][26]. Also, the microstructures and elemental compositions of aerogels can be tailored using solution chemistry via a process known as the sol-gel method [27,28].…”