Synthesis of Na-Doped Lithium Metatitanate and Its Absorption for Carbon Dioxide

Abstract EN

Na-doped lithium metatitanate (Na-doped Li2TiO3) absorbent was doped with Na2CO3 and lithium metatitanate (Li2TiO3) was prepared by a solid-state reaction method from mixture of TiO2 and Li2CO3.

The Na-doped lithium metatitanate was characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) and surface area.

Carbon dioxide absorption on Na-doped lithium metatitanate was investigated using TG-DTA.

The results reveal an increase of the CO2 absorption capacity of the Na-doped materials with respect to pure Li2TiO3.

XRD patterns of the doped samples suggest a limited substitution of Li by Na atoms within the Li2TiO3 structure.

The results of experimental and modeling work were summarized to better understand the relationship between the sorbent microstructure and carbon dioxide absorption kinetics.