Synthesis, CO2 absorption property and densification of Li4SiO4 powder by glycine-nitrate solution combustion method and its comparison with solid state method

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.…”

Development of Alkali Nitrate‐Containing Li4SiO4 for High‐Temperature CO2 Capture

“…Several alternative Si sources (fly ashes [11] rice husk ashes [12] and diatomite [13] ) and Li precursors (LiOH, LiNO 3 , and organic lithium) [14] have also been used. Other synthetic routes including combustion, [15] precipitation, [16] sol-gel, [17] carbon templates [18] and hydration [19] were employed to improve microstructural characteristics. However, synthesized Li 4 SiO 4 usually exhibits large particles, low surface areas and poor porosity; all of these properties tend to limit the CO 2 chemisorption process.…”

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

“…The superior performance of such prepared Li4SiO4 samples was ascribed to the fine crystallites and high specific surface area of Li4SiO4. 75 In a recent publication, Rao et al 76 synthetized Li4SiO4 nanoparticles by a solution combustion method, where glycine was used as fuel, while silicic acid and lithium nitrate were the lithium silicate precursors. Authors determined that fuel-oxidizer ratio highly influenced the combustion process and synthesis evolution.…”