CO2 absorption by lithium silicate at room temperature
CO2 absorption by lithium silicate at room temperature
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DOI：
10.1252/jcej.37.772
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发表时间：
2004-06-01
影响因子：
0.8
通讯作者：
Uemoto, H
中科院分区：
文献类型：
--
作者：
Essaki, K;Nakagawa, K;Uemoto, H
硅酸锂主要在773 K左右的高温下作为CO2吸附剂进行研究。最近观察到，在室温下，硅酸锂也能吸收大气中的二氧化碳。在本研究中，硅酸锂吸附剂填充在吸收柱中，并证实了该吸收柱的有效性。在此基础上，评价了硅酸锂在室温下吸收大气CO2的效果。人们发现湿度促进吸收。研究了这一机理，并将其归因于硅酸锂中水分含量与CO2吸收率之间的关系。此外，在控制湿度条件下，将硅酸锂吸附剂与市售的钠石灰吸附剂的吸附剂效果进行了比较，证实了硅酸锂吸附剂的优越性。
Lithium silicate has been studied mainly as a CO2 absorbent at high temperatures of around 773 K. It has recently been observed that lithium silicate also absorbs atmospheric CO2 at room temperature. In this study, lithium silicate absorbent was packed in an absorption column and the effectiveness of this column was confirmed. Based on this result, the effectiveness of lithium silicate in absorbing atmospheric CO2 at room temperature was evaluated. It was found that humidity promoted absorption. This mechanism was examined and ascribed to the relationship between the water content in lithium silicate and CO2 absorption. In addition, the effectiveness of lithium silicate absorbent was compared with that of a commercially available absorbent (soda lime) under conditions of controlled humidity, and the superiority of lithium silicate was confirmed.