Zr-金属有机骨架对 CH4 和 CO2 的吸附
Adsorption of CH4 and CO2 on Zr-metal organic frameworks.
机构信息
Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
出版信息
J Colloid Interface Sci. 2012 Jan 15;366(1):120-124. doi: 10.1016/j.jcis.2011.09.060. Epub 2011 Oct 2.
Zirconium-metal organic frameworks (Zr-MOFs) were synthesized with or without ammonium hydroxide as an additive in the synthesis process. It was found that addition of ammonium hydroxide would change the textural structure of Zr-MOF. The BET surface area, pore volume, and crystal size of Zr-MOF were reduced after addition of ammonium hydroxide. However, the crystalline structure and thermal stability were maintained and no functional groups were formed. Adsorption tests showed that Zr-MOF presented much higher CO(2) adsorption than CH(4). Zr-MOF exhibited CO(2) and CH(4) adsorption of 8.1 and 3.6 mmol/g, respectively, at 273 K, 988 kPa. The addition of ammonium hydroxide resulted in the Zr-MOF with a slight lower adsorption of CO(2) and CH(4), however, the selectivity of CO(2)/CH(4) is significantly enhanced.
锆基金属有机框架（Zr-MOFs）的合成可以在合成过程中添加或不添加氨作为添加剂。研究发现，添加氨会改变 Zr-MOF 的结构。添加氨后，Zr-MOF 的 BET 比表面积、孔体积和晶体尺寸减小。然而，其晶体结构和热稳定性得以保持，并未形成官能团。吸附实验表明，Zr-MOF 对 CO(2)的吸附量远高于 CH(4)。Zr-MOF 在 273 K、988 kPa 下对 CO(2)和 CH(4)的吸附量分别为 8.1 和 3.6 mmol/g。添加氨后，Zr-MOF 对 CO(2)和 CH(4)的吸附略有下降，但 CO(2)/CH(4)的选择性显著增强。
Zotero 插件