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通过柠檬酸溶胶-凝胶法制备纳米级锆酸锂(Li2ZrO3)材料,利用扫描电子显微镜和X射线衍射仪对Li2ZrO3材料的形貌与结构进行表征,利用热重分析仪测试Li2ZrO3材料的高温CO2吸收性能。结果表明,合成的Li2ZrO3材料具有良好的高温CO2吸收性能,在CO2分压为0.05MPa、550℃、20min内吸收容量可达20%(质量分数);45min内可达吸收平衡,平衡吸收量达27%(质量分数)。经3次吸收解吸循环后其吸收性能没有明显下降,表明Li2ZrO3材料具有良好的稳定性。
Nanocrystalline lithium zirconate (Li2ZrO3) was prepared by citric acid sol-gel method. The morphology and structure of Li2ZrO3 material were characterized by scanning electron microscopy and X-ray diffractometer. The thermogravimetric analysis Absorption performance. The results show that the synthesized Li2ZrO3 material has good high-temperature CO2 absorption capacity, absorption capacity up to 20% (mass fraction) in the partial pressure of CO2 of 0.05MPa, 550 ℃, 20min; Up to absorption equilibrium within 45min, the equilibrium absorption up to 27% (mass fraction). After 3 cycles of absorption and desorption, the absorption performance did not decrease significantly, indicating that Li2ZrO3 material has good stability.