摘要
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。
A citrate sol-gel method is applied to synthesize nanocrystalline Li2ZrO3 materials.The morphology and structure of the synthesized nanoparticles are characterized by the SEM and XRD techniques,respectively.The absorption properties of CO2 in the Li2ZrO3 absorbent at high temperature are investigated on a TG analyzer,and the results show that the prepared Li2ZrO3 nanoparticles can absorb CO2 rapidly and high equilibrium absorbed amounts can be obtained under the applied conditions,e.g.at a temperature of 550℃ and a CO2 partial pressure of 0.05 MPa.The absorbed amount of CO2 in the Li2ZrO3 is 20 wt% within 20 min and an equilibrium amount of 27 wt% can be obtained within 45 min.The prepared absorbent exhibits good stability ,which is proved by that the absorption properties maintain the same after three absorption-regeneration cycles.
出处
《现代化工》
CAS
CSCD
北大核心
2009年第S1期62-64,共3页
Modern Chemical Industry
基金
国家"973"资助项目(2009CB626607)
