Herein, we report the effects of doped K and AI on the carbon dioxide(C02) adsorption performance of the Li_4 SiO_4-based adsorbents. The CO_2 adsorption capacity of 0.8 wt% K and 1.5 wt% Al doped Li_4 SiO_4 is～2.2 t...Herein, we report the effects of doped K and AI on the carbon dioxide(C02) adsorption performance of the Li_4 SiO_4-based adsorbents. The CO_2 adsorption capacity of 0.8 wt% K and 1.5 wt% Al doped Li_4 SiO_4 is～2.2 times and ～1.3 times higher than that of the pristine Li_4 SiO_4 at 500 and 600℃, respectively. The kinetic study further indicated that the reaction rates of the lithium diffusion process is greatly improved by K and Al doping, and the lithium diffusion rate of 0.8 wt%K and 1.5 wt% Al doped Li_4 SiO_4 is～2 times higher than that of the pristine Li_4 SiO_4 at 575-650 ℃. K and Al doping increases the adsorption capacity of Li_4 SiO_4-based adsorbents, and widens its effective adsorption temperature展开更多
基金supported by the National Natural Science Foundation of China(Nos. 21476160, 21476159]the Natural Science Foundation of Tianjin(Nos.15JCYBJC23000,15JCZDJC37400)
文摘Herein, we report the effects of doped K and AI on the carbon dioxide(C02) adsorption performance of the Li_4 SiO_4-based adsorbents. The CO_2 adsorption capacity of 0.8 wt% K and 1.5 wt% Al doped Li_4 SiO_4 is～2.2 times and ～1.3 times higher than that of the pristine Li_4 SiO_4 at 500 and 600℃, respectively. The kinetic study further indicated that the reaction rates of the lithium diffusion process is greatly improved by K and Al doping, and the lithium diffusion rate of 0.8 wt%K and 1.5 wt% Al doped Li_4 SiO_4 is～2 times higher than that of the pristine Li_4 SiO_4 at 575-650 ℃. K and Al doping increases the adsorption capacity of Li_4 SiO_4-based adsorbents, and widens its effective adsorption temperature
