Adsorption and Diffusion of Carbon Dioxide on Metal−Organic Framework (MOF-5)

作者：Zhenxia Zhao, Zhong Li, Y. S. Lin · 发表于：Industrial & Engineering Chemistry Research · 年份：2009 · DOI：10.1021/ie900665f · 被引用次数：348 · 研究领域：Metal-Organic Frameworks: Synthesis and Applications、Carbon Dioxide Capture Technologies、Thermal Expansion and Ionic Conductivity

Adsorption equilibrium and diffusion of CO 2 on microporous metal−organic frameworks (MOF-5, or IRMOF-1) crystals were experimentally studied by the gravimetric method in the pressure range up to 1 atm. The MOF-5 crystal cubes of about 40−60 μm in sizes were synthesized by the solvothermal method. Freundlich adsorption isotherm equation can fit well CO 2 adsorption isotherms on MOF-5, with isosteric heat of adsorption of about 34 kJ/mol. Diffusion coefficient of CO 2 in the MOF-5 is in the range of 8.1−11.5 × 10 −9 cm 2 /s in 295−331K with activation energy of 7.61 kJ/mol. MOF-5 offers attractive adsorption properties as an adsorbent for separation of CO 2 from flue gas.