Li₄SiO₄ sorbents have exhibited promising prospects for high-temperature CO₂ capture. However, conventional Li₄SiO₄ using solid-state reaction method usually exhibits dense structures with barren porosity, limiting the CO₂ sorption. To solve this problem, a sol-mixing method using organometallic lithium precursors was employed to produce ‘new’ Li₄SiO₄ sorbents with improved CO₂ sorption performance. The obtained Li₄SiO₄ from lithium salicylate precursor exhibited enhanced specific surface area and modified micromorphology compared to the conventional Li₄SiO₄. The morphology showed that the ‘new’ Li₄SiO₄ possessed many fluff-like folds on the surface, in comparison with the smooth surfaces of conventional sorbent. As a result, the ‘new’ sorbent exhibited CO₂ uptake of ~0.15 g/g, which is more than three times as high as that of the conventional one. Furthermore, the CO₂ uptake was further enhanced to 0.32 g/g by K₂CO₃ doping. After granulation, the pellets also presented good CO₂ sorption performance as well as excellent mechanical strength for practical applications. Generally, the good sorption performance and excellent mechanical strength demonstrated the effectiveness of sol-mixing method and lithium salicylate as precursors for the production of efficient Li₄SiO₄ sorbents.

Li ₄ SiO ₄吸附剂在高温CO ₂捕获方面表现出良好的前景。然而，使用固态反应方法的常规Li ₄ SiO ₄通常表现出致密的结构和贫瘠的孔隙率，限制了CO _{2 的}吸附。为了解决这个问题，使用有机金属锂前体的溶胶混合方法被用来生产具有改进的 CO ₂吸附性能的“新”Li ₄ SiO ₄吸附剂。与传统的锂相比，从水杨酸锂前驱体中获得的 Li ₄ SiO ₄表现出更高的比表面积和改进的微观形态。₄ SiO ₄。形态表明，与传统吸附剂的光滑表面相比，“新”Li ₄ SiO _{4 表面}具有许多绒毛状褶皱。因此，“新”吸附剂的 CO ₂吸收量为~0.15 g/g，是传统吸附剂的三倍多。此外，通过K ₂ CO ₃掺杂，CO ₂吸收进一步提高至0.32 g/g 。造粒后，粒料也呈现出良好的 CO ₂吸附性能以及实际应用中优异的机械强度。一般来说，良好的吸附性能和优异的机械强度证明了溶胶混合法和水杨酸锂作为生产高效 Li ₄ SiO ₄吸附剂的前驱体的有效性。