CAJ | 학술논문

通过柠檬酸溶胶-凝胶法制备纳米级锆酸锂(Li_2ZrO_3)材料,利用扫描电子显微镜和X射线衍射仪对Li_2ZrO_3材料的形貌与结构进行表征,利用热重分析仪测试Li_2ZrO_3材料的高温CO_2吸收性能.结果表明,合成的Li_2ZrO_3材料具有良好的高温CO_2吸收性能.在CO_2分压为0.05 MPa、550℃、20min内吸收容量可达20%(质量分数);45 min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Li_2ZrO_3材料具有良好的稳定性.
통과저몽산용효-응효법제비납미급고산리(Li_2ZrO_3)재료,이용소묘전자현미경화X사선연사의대Li_2ZrO_3재료적형모여결구진행표정,이용열중분석의측시Li_2ZrO_3재료적고온CO_2흡수성능.결과표명,합성적Li_2ZrO_3재료구유량호적고온CO_2흡수성능.재CO_2분압위0.05 MPa、550℃、20min내흡수용량가체20%(질량분수);45 min내가체흡수평형,평형흡수량체27%(질량분수).경3차흡수해흡순배후기흡수성능몰유명현하강,표명Li_2ZrO_3재료구유량호적은정성.
A citrate sol-gel method is applied to synthesize nanecrystaUine Li_2ZrO_3 materials.The morphology and structure of the synthesized nanooarticles are characterized by the SEM and XRD techniques,respectively.The absorption properties of CO_2 in the Li_2ZrO_3 absorbent at high temperature are investigated on a TG analyzer,and ihe results show that the prepared Li_2ZrO_3 nanoparticles can absorb CO_2 mpidly and high equilibrium absorbed mnounts can be obtained under the applied conditions,e.g.at a temperature of 550℃ and a CO_2 partial pressure of 0.05 MPa.The absorbed amount of CO_2 in the Li_2ZrO_3 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.