Mechanistic Insights into CO₂ Adsorption of Li₄SiO₄ at High Temperature.

ABSTRACT: The development of materials with high adsorption capacity for capturing CO₂ from industrial exhaust gases has proceeded rapidly in recent years. Li₄SiO₄ has attracted attention due to its low cost, high capture capacity, and good cycling stability for direct high-temperature CO₂ capture. Thus far, the CO₂ adsorption mechanism of Li₄SiO₄ is poorly understood, and detailed phase transformations during the CO₂ adsorption process are missing. Here, aided by in situ X-ray diffraction and in situ Raman spectroscopy, we find that Li₄SiO₄ reacts with CO₂ to form Li₂SiO₃ and Li₂CO₃ in CO₂ atmosphere at 973 K, with no detecta

SUBMITTER: Ma N 

PROVIDER: S-EPMC11766996 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature