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- 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.
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来源期刊
Science
Science 综合性期刊-综合性期刊
CiteScore
61.10
自引率
0.90%
发文量
0
审稿时长
2.1 months
期刊介绍: Science is a leading outlet for scientific news, commentary, and cutting-edge research. Through its print and online incarnations, Science reaches an estimated worldwide readership of more than one million. Science’s authorship is global too, and its articles consistently rank among the world's most cited research. Science serves as a forum for discussion of important issues related to the advancement of science by publishing material on which a consensus has been reached as well as including the presentation of minority or conflicting points of view. Accordingly, all articles published in Science—including editorials, news and comment, and book reviews—are signed and reflect the individual views of the authors and not official points of view adopted by AAAS or the institutions with which the authors are affiliated. Science seeks to publish those papers that are most influential in their fields or across fields and that will significantly advance scientific understanding. Selected papers should present novel and broadly important data, syntheses, or concepts. They should merit recognition by the wider scientific community and general public provided by publication in Science, beyond that provided by specialty journals. Science welcomes submissions from all fields of science and from any source. The editors are committed to the prompt evaluation and publication of submitted papers while upholding high standards that support reproducibility of published research. Science is published weekly; selected papers are published online ahead of print.
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