影响锆酸锂吸收CO_2循环性能的一些因素  

Some Influencing Factor for CO_2 Absorption Cycle-Ability of Lithium Zirconate

作　　者：王银杰[1] 其鲁[2] 江卫军[2] 

机构地区：[1]北京理工大学阻燃材料研究国家专业实验室,北京100081 [2]北京大学化学与分子工程学院应用化学系,北京100871

出　　处：《北京大学学报（自然科学版）》2006年第2期281-283,共3页Acta Scientiarum Naturalium Universitatis Pekinensis

基　　金：中信基金资助项目

摘　　要：以纳米级单斜相ZrO2为反应物。按照n（Li2CO3）：n（ZrO2）：n（K2CO3）=1：1：0．03的比例制备了可在高温460-650℃下直接吸收CO2的锆酸锂材料。使用热重分析仪（TG）进行了循环吸收CO2性能的研究，采用扫描电镜（SEM）、X-射线衍射仪（XRD）对再次合成的材料分别进行了形貌、结构的分析。实验结果表明，在吸收CO2后材料的再次合成过程中合成温度及空气流量影响材料吸收CO2的循环性能，在再次合成温度为750℃，空气流量为100mL／min的条件下，合成的材料具有良好的循环吸收CO2的性能。With nanometer-sized monoclinic ZrO2 , lithium carbonate, and potassium carbonate as starting materials, according to Li2CO3 ：ZrO2 ：K2CO3 = 1 ： 1：0.03, potassium-doped lithium zireonate absorbents were prepared by high-temperature solid-state reaction. Their CO2-absorption cycle-properties were measured with a thermogravimetrie analyzer. The crystal structure of the reprepared absorbents was studied by comparison of their XRD pattems. The microscopic morphologies of re-prepared absorbents were viewed by a sanning electron microscopy. The experimental results showed, after absorption of CO2, the material could be reprepared, whose performance of absorbing CO2 for the second time is affected by the temperature and air flux during repreparation. When the temperature is 750℃C and the air flux is 100 mL/min, the re-prepared material has good cycle ability to absorb CO2.

关 键 词：锆酸锂 吸收 CO2 热重分析仪 

分 类 号：O614.4[理学—无机化学]