| Na掺杂对锆酸锂吸收CO2性能的影响 |
| Effect of Na-Doping on Properties of Lithium Zirconate as CO2-absorbent |
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| 摘要: |
| 关键词: Na元素 掺杂 锆酸锂 吸收 CO2 |
| 基金项目: |
| Abstract: By using Li2CO3, ZrO2, and Na2CO3 as starting materials, sodium-doped Li2(1-x)Na2xZrO3 absorbents were prepared by high-temperature solid-state reaction. The crystal structure of the lithium zirconate material was analyzed using a X-ray powder diffractometer (XRD), the microstructure of all the samples was observed using the method of scanning electron microscopy (SEM) and the CO2-absorption ability of the lithium zirconate material was studied using a thermogravimetric analyzer (TG). It was found that Li2(1-x)Na2xZrO3 absorbent with x=0.02 possesses the best performance. As much as (25 ± 0.4)% (wt) of CO2 was absorbed by such an absorbent in an atmosphere consisting of 20% (wt) CO2 and 80% (wt) air at 500 ℃ within 3 h. After 10 cycles of absorption-desorption this absorbent lost only 0.9% of its CO2-absorption capacity. No remarkable change in particle size and pH was observed. |
| Keywords: Na element doping lithium zirconate absorption CO2 |
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| 王银杰,其鲁,江卫军.Na掺杂对锆酸锂吸收CO2性能的影响[J].无机化学学报,2006,22(6):1118-1122. |
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