用于甲烷吸附的超高表面积共价有机框架

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Science 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

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引用次数: 0

摘要

开发具有超高比表面积的多孔材料用于储存气体（例如甲烷）具有吸引力，但也极具挑战性。在这里，我们报告了两种具有罕见的自卡特化 alb -3,6- Ccc 2 拓扑结构和 1.1 纳米孔径的等结构三维共价有机框架（COFs）。值得注意的是，这些亚胺连接的微孔 COF 同时显示出较高的重力布鲁纳-埃美特-泰勒（BET）表面积（约 4400 平方米/克）和体积 BET 表面积（约 1900 平方米/立方厘米）。此外，在 100 巴和 298 开尔文条件下，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 ]，在 5 至 100 巴和 298 开尔文条件下，它们的体积工作容量为 237 cm 3 (STP) cm -3，是所有已报道的多孔晶体材料中最高的。

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Ultrahigh–surface area covalent organic frameworks for methane adsorption

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-Ccc2 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 [cm³ (STP) cm⁻³] at 100 bar and 298 kelvin, and they exhibit the highest volumetric working capacity of 237 cm³ (STP) cm⁻³ at 5 to 100 bar and 298 kelvin among all reported porous crystalline materials.

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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