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Ultrahigh–surface area covalent organic frameworks for methane adsorption
Science ( IF 44.7 ) Pub Date : 2024-11-07 , DOI: 10.1126/science.adr0936
Ying Yin, Ya Zhang, Xu Zhou, Bo Gui, Wenqi Wang, Wentao Jiang, Yue-Biao Zhang, Junliang Sun, Cheng Wang

Developing porous materials with ultrahigh surface areas for gas storage (for example, methane) is attractive but challenging. Here, we report two isostructural three-dimensional covalent organic frameworks (COFs) with a rare self-catenated alb -3,6- Ccc 2 topology and a pore size of 1.1 nanometer. Notably, these imine-linked microporous COFs show both high gravimetric Brunauer–Emmett–Teller (BET) surface areas (~4400 square meters per gram) and volumetric BET surface areas (~1900 square meters per cubic centimeter). Moreover, their volumetric methane uptake reaches up to 264 cubic centimeter (standard temperature and pressure) per cubic centimeter [cm 3 (STP) cm −3 ] at 100 bar and 298 kelvin, and they exhibit the highest volumetric working capacity of 237 cm 3 (STP) cm −3 at 5 to 100 bar and 298 kelvin among all reported porous crystalline materials.

中文翻译:


用于甲烷吸附的超高比表面积共价有机框架



开发具有超高表面积的多孔材料用于储气(例如甲烷)很有吸引力,但也具有挑战性。在这里,我们报道了两种同构三维共价有机框架 (COF),它们具有罕见的自链状 alb -3,6- Ccc 2 拓扑结构,孔径为 1.1 纳米。值得注意的是,这些亚胺连接的微孔 COF 显示出高重量 Brunauer-Emmett-Teller (BET) 表面积(~4400 平方米/克)和体积 BET 表面积(~1900 平方米/立方厘米)。此外,在 100 bar 和 298 开尔文时,它们的体积甲烷吸收量高达每立方厘米 264 立方厘米(标准温度和压力)[cm 3 (STP) cm -3 ],并且在 5 至 100 bar 和 298 开尔文时表现出最高的体积工作容量,为 5 至 100 bar 和 298 开尔文。
更新日期:2024-11-07
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