Carbon Capture Beyond Amines: CO 2 Sorption at Nucleophilic Oxygen Sites in Materials
Carbon Capture Beyond Amines: CO 2 Sorption at Nucleophilic Oxygen Sites in Materials
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DOI：
10.1002/cnma.202200436
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发表时间：
2022-11
期刊：
影响因子：
3.8
通讯作者：
Mary E. Zick;Do-Hyong Cho;Jianheng Ling;P. Milner
中科院分区：
文献类型：
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作者：
Mary E. Zick;Do-Hyong Cho;Jianheng Ling;P. Milner
为了在下个世纪减少大气中的温室气体水平，将需要碳捕获和利用或封存和直接空气捕获。目前基于胺的技术结合二氧化碳具有很高的选择性，但存在氧化和热稳定性差的问题。在这里，我们讨论了基于氧亲核试剂的未被研究的吸附剂，包括金属氧化物和氢氧化物、含氢氧化物的聚合物和基于氢氧化物的金属有机骨架。总体而言，与传统的胺基吸附剂相比，这些材料表现出更好的氧化稳定性。我们概述了这些替代吸附剂在碳捕获应用方面带来的挑战和机遇。
Carbon capture and utilization or sequestration and direct air capture will be needed to reduce atmospheric levels of greenhouse gases over the next century. Current amine‐based technologies bind CO2with high selectivities but suffer from poor oxidative and thermal stabilities. Herein, we discuss understudied sorbents based on oxygen nucleophiles, including metal oxides and hydroxides, hydroxide‐containing polymers, and hydroxide‐based metal–organic frameworks. In general, these materials display improved oxidative stabilities compared to traditional amine‐based sorbents. We outline the challenges and opportunities offered by these alternative sorbents for carbon capture applications.