稳定的铝基金属有机骨架材料（Al-MOFs）用于平衡 CO 和水的选择性。
Stable Aluminum Metal-Organic Frameworks (Al-MOFs) for Balanced CO and Water Selectivity.
机构信息
Key Laboratory of Cluster Science, Ministry of Education of China, School of Chemistry and Chemical Engineering, Beijing Institute of Technology , 5 South Zhongguancun Street, Beijing 100081, P. R. China.
出版信息
ACS Appl Mater Interfaces. 2018 Jan 31;10(4):3160-3163. doi: 10.1021/acsami.7b17026. Epub 2018 Jan 16.
Three new Al-MOFs in the formation of [Al(OH)(OCH)(OH-BDC)]·xHO (BIT-72), [Al(OH)(OCH)(CH-BDC)]·xHO (BIT-73) and {Al(OH)(OCH)[(CH)-BDC]}·xHO (BIT-74) have been synthesized by assembling Al ion with terephthalic acid ions decorated with monohydroxyl, monomethyl or dimethyl groups, respectively. All of these three MOFs exhibit high stability in boiling water and acidic conditions. Among them, BIT-72 shows the highest surface area of 1618 m·g and IAST CO/N selectivity of 48, while BIT-73 and BIT-74 present moderate IAST CO/N selectivity and much lower HO capacity below P/P = 0.3. The high CO/N selectivity together with alleviative HO sorption at low water relative pressure may provide promising potential in postcombustion CO capture.
三种新的 Al-MOFs，[Al(OH)(OCH)(OH-BDC)]·xH2O（BIT-72）、[Al(OH)(OCH)(CH-BDC)]·xH2O（BIT-73）和{Al(OH)(OCH)[(CH)-BDC]}·xH2O（BIT-74），通过组装 Al 离子与分别带有单羟基、单甲基或二甲氧基的对苯二甲酸离子合成。所有这三种 MOFs 在沸水和酸性条件下都表现出很高的稳定性。其中，BIT-72 具有最高的比表面积 1618 m·g-1 和 IAST CO/N 选择性 48，而 BIT-73 和 BIT-74 则表现出中等的 IAST CO/N 选择性和在 P/P < 0.3 时较低的 HO 容量。高的 CO/N 选择性和在低水相对压力下缓解的 HO 吸附可能在燃烧后 CO 捕集中具有广阔的应用前景。
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