High-temperature carbon dioxide capture in a porous material with terminal zinc hydride sites

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2024-11-14 DOI:10.1126/science.adk5697

Rachel C. Rohde, Kurtis M. Carsch, Matthew N. Dods, Henry Z. H. Jiang, Alexandra R. McIsaac, Ryan A. Klein, Hyunchul Kwon, Sarah L. Karstens, Yang Wang, Adrian J. Huang, Jordan W. Taylor, Yuto Yabuuchi, Nikolay V. Tkachenko, Katie R. Meihaus, Hiroyasu Furukawa, Danielle R. Yahne, Kaitlyn E. Engler, Karen C. Bustillo, Andrew M. Minor, Jeffrey A. Reimer, Martin Head-Gordon, Craig M. Brown, Jeffrey R. Long

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引用次数: 0

Abstract

Carbon capture can mitigate point-source carbon dioxide (CO 2 ) emissions, but hurdles remain that impede the widespread adoption of amine-based technologies. Capturing CO 2 at temperatures closer to those of many industrial exhaust streams (>200°C) is of interest, although metal oxide absorbents that operate at these temperatures typically exhibit sluggish CO 2 absorption kinetics and instability to cycling. Here, we report a porous metal–organic framework featuring terminal zinc hydride sites that reversibly bind CO 2 at temperatures above 200°C—conditions that are unprecedented for intrinsically porous materials. Gas adsorption, structural, spectroscopic, and computational analyses elucidate the rapid, reversible nature of this transformation. Extended cycling and breakthrough analyses reveal that the material is capable of deep carbon capture at low CO 2 concentrations and high temperatures relevant to postcombustion capture.

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在具有末端氢化锌位点的多孔材料中高温捕获二氧化碳

碳捕集可以减少点源二氧化碳（CO 2）排放，但仍存在阻碍胺类技术广泛应用的障碍。在更接近许多工业废气流（200°C）的温度下捕获二氧化碳令人感兴趣，但在这些温度下工作的金属氧化物吸收剂通常表现出缓慢的二氧化碳吸收动力学和循环不稳定性。在这里，我们报告了一种多孔金属有机框架，它具有末端氢化锌位点，可在 200°C 以上的温度下可逆地吸附二氧化碳--这对于本征多孔材料来说是前所未有的。气体吸附、结构、光谱和计算分析阐明了这种转化的快速、可逆性质。扩展循环和突破分析表明，该材料能够在低二氧化碳浓度和与燃烧后捕获相关的高温条件下进行深度碳捕获。

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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