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Reticular Chemistry in Action: A Hydrolytically Stable MOF Capturing Twice Its Weight in Adsorbed Water
Chem ( IF 19.1 ) Pub Date : 2018-01-11 , DOI: 10.1016/j.chempr.2017.11.005
Sk Md Towsif Abtab , Dalal Alezi , Prashant M. Bhatt , Aleksander Shkurenko , Youssef Belmabkhout , Himanshu Aggarwal , Łukasz J. Weseliński , Norah Alsadun , Umer Samin , Mohamed Nejib Hedhili , Mohamed Eddaoudi

Hydrolytically stable adsorbents, with notable water uptake, are of prime importance and offer great potential for many water-adsorption-related applications. Nevertheless, deliberate construction of tunable porous solids with high porosity and high stability remains challenging. Here, we present the successful deployment of reticular chemistry to address this demand: we constructed Cr-soc-MOF-1, a chemically and hydrolytically stable chromium-based metal-organic framework (MOF) with underlying soc topology. Prominently, Cr-soc-MOF-1 offers the requisite thermal and chemical stability concomitant with unique adsorption properties, namely extraordinary high porosity (apparent surface area of 4,549 m2/g) affording a water vapor uptake of 1.95 g/g at 70% relative humidity. This exceptional water uptake is maintained over more than 100 adsorption-desorption cycles. Markedly, the adsorbed water can be fully desorbed by just the simple reduction of the relative humidity at 25°C. Cr-soc-MOF-1 offers great potential for use in applications pertaining to water vapor control in enclosed and confined spaces and dehumidification.



中文翻译:

网状化学的作用:水解稳定的MOF在吸附的水中捕获两倍的重量

具有显着吸水率的水解稳定型吸附剂至关重要,并为许多与水吸附有关的应用提供了巨大潜力。然而,具有高孔隙率和高稳定性的可调谐多孔固体的故意构造仍然具有挑战性。在这里,我们介绍了网状化学的成功应用,以满足这一需求:我们构建了Cr- soc -MOF-1,这是一种化学和水解稳定的基于铬的金属有机骨架(MOF),具有潜在的soc拓扑结构。显着的是,Cr- soc -MOF-1具有必要的热稳定性和化学稳定性,并具有独特的吸附特性,即非凡的高孔隙度(表观表面积为4,549 m 2/ g)在70%相对湿度下提供1.95 g / g的水蒸气吸收量。超过100个吸附-解吸循环可保持这种异常的吸水率。明显地,仅通过简单地降低25℃的相对湿度就可以完全解吸吸附的水。CR- SOC -MOF-1提供了非常适合在有关的封闭和封闭空间和除湿水蒸气控制应用潜力。

更新日期:2018-01-11
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