A general procedure has been developed for synthesizing four MOFs sharing similar chains of AlO₆ octahedra (CAU-10, NOTT-300, MIL-53-TDC, and MIL-160). CAU-10 has been synthesized with eight differently substituted ligands to impart different characteristics into the pore space. Isotherms of CO₂, CH₄, and N₂ were measured on all MOFs synthesized in this work to assess the effects of functional group and surface area on adsorption behavior. At low pressure (100 mbar), structures incorporating polar functional groups have the highest adsorption of CO₂, while the structures with the highest surface areas have the highest adsorption of CO₂ at higher pressure (1000 mbar). The heterocyclic and amine-substituted structures show the greatest CO₂ adsorption and Henry’s law selectivity among all CAU-10 structures in this work. Comparison of CAU-10 MOFs substituted with a nitro group at different positions on the ligand (carbon 4 vs 5) showed that positioning the nitro group at the side of the pore rather than the center resulted in increased loading of all adsorbates over the studied pressure range up to 1 bar.

已经开发了用于合成共享相似的AlO ₆八面体相似链的四个MOF （CAU-10，Nott-300，MIL-53-TDC和MIL-160）的通用程序。已经合成了具有八个不同取代的配体的CAU-10，以赋予孔空间不同的特性。在这项工作中合成的所有MOF上均测量了CO ₂，CH ₄和N _2的等温线，以评估官能团和表面积对吸附行为的影响。在低压（100 mbar）下，结合极性官能团的结构对CO _2的吸附最高，而表面积最大的结构对CO _2的吸附最高。在更高的压力下（1000毫巴）。在这项工作中，杂环和胺取代的结构在所有CAU-10结构中显示出最大的CO ₂吸附和亨利定律选择性。比较在配体上不同位置（碳原子4比5）被硝基取代的CAU-10 MOF，结果表明，在研究压力下，将硝基置于孔的侧面而不是中心会导致所有吸附物的负载增加范围高达1巴。