State Key Laboratory of Chemical Engineering, College of Chemical Engineering, East China University of Science and Technology, Shanghai, People's Republic of China.
Inorg Chem. 2011 Apr 4;50(7):2844-50. doi: 10.1021/ic102035y. Epub 2011 Feb 28.
Li(8)ZrO(6) contains a high lithium content and may bear a great ability of CO(2) absorption, yet the reports about the properties of CO(2) absorption on Li(8)ZrO(6) are few to date for its difficulty in production. In this paper, high-purity Li(8)ZrO(6) is synthesized via a three-step calcination method combined with an effective lithium source and a suitable initial Li/Zr molar ratio. The produced Li(8)ZrO(6) possesses a great CO(2) absorption capacity of about 53.98 wt % at 998 K, which could be well-maintained in a wide range of CO(2) partial pressures of 0.1-1.0 bar although it decreased gradually during the multicycle process of CO(2) absorption-desorption in a 10% CO(2) feed stream because of the high working temperature. These properties imply that Li(8)ZrO(6) may be a new option for high-temperature CO(2) capture applied in industrial processes such as a steam methane reformer.
Li(8)ZrO(6) 含有高浓度的锂，可能具有很强的 CO(2)吸收能力，但由于其制备困难，目前关于其 CO(2)吸收性能的报道很少。本文采用三步煅烧法结合有效的锂源和合适的初始 Li/Zr 摩尔比合成了高纯 Li(8)ZrO(6)。制备的 Li(8)ZrO(6)在 998 K 时具有约 53.98wt%的高 CO(2)吸收能力，在 0.1-1.0 巴的宽 CO(2)分压范围内可得到很好的保持，尽管在 10% CO(2)进料流中的 CO(2)吸收-解吸多循环过程中，由于工作温度较高，其逐渐下降。这些特性表明，Li(8)ZrO(6)可能是一种新型的高温 CO(2)捕获剂，可应用于蒸汽甲烷重整器等工业过程中。
