Optimization of Li₄SiO₄ synthesis conditions by a solid state method for maximum CO₂ capture at high temperature

Abstract

Optimum Li4SiO4 synthesis conditions have been obtained by a SS method to enhance CO2 uptake: the lower the crystal size the higher the uptake.

Lithium silicate nanosheets with excellent capture capacity and kinetics with unprecedented stability for high-temperature CO2 capture

“…In general, conventional lithium silicates systematically lose their capture capacity with every cycle with a signicant loss in the rst few cycles (Fig. 3b); [5][6][7][17][18][19][20][21][22][23][24][25][26][27][28][29] however, the LSNs were found to be stable even aer 200 cycles. The LSNs were even better than one of the best recently reported sorbents, lithium silicate nanowires (NWs) 8 (Fig.…”

Recent advances in lithium containing ceramic based sorbents for high-temperature CO2 capture

“…This study suggests that reducing the synthesis temperature can improve the CO2 sorption performance of Li4SiO4 to a certain extent. In another work, Izquierdo et al 61 optimized the solid-state synthesis condition for Li4SiO4 to maximize the CO2 uptake.…”

The Role of Alkaline/alkaline Earth Metal Oxides in CO2 Capture: A Concise Review

“…Sol-gel method facilitates the formation of relatively homogeneous material at lower temperatures [68]. In precipitation method, the silicon source is first mixed with a solution of lithium source and the mixture suspension is stirred, dried and calcined at high temperatures to produce Li 4 SiO 4 sorbent [69][70][71][72][73][74]. In combustion method, the silicon source is mixed with the lithium solution and the fuel (i.e., citric acid, urea, and glycine) followed by vaporization, during which it begins to foam and swell and finally burns itself (autoignition) due to strong exothermic reaction.…”