Ultrahigh–surface area covalent organic frameworks for methane adsorption

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

引用次数: 0

Abstract

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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用于甲烷吸附的超高表面积共价有机框架

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。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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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