The utilization of various conventional and emerging solid adsorbents is an attractive carbon capture method for post-combustion and direct air capture (DAC). This review aims to identify adsorbents with the highest CO₂ adsorption performance at various CO₂ capture conditions inclusive of pre-combustion, post-combustion, and DAC to aid the selection of adsorbents. It presents the various adsorbents’ physical and chemical properties, their synthesis methods, CO₂ adsorption performance, and their advantages as CO₂ adsorbents. Findings of the review show that NaX@NaA core-shell microspheres possess the highest CO₂ adsorption capacity at 5.60 mmol g⁻¹ for adsorption at DAC conditions. MOF-177-TEPA exhibited the highest post-combustion condition CO₂ adsorption capacity at 4.60 mmol g⁻¹ given tetraethylenepentamine properties leading to low diffusion resistance for CO₂ and easy access to active sites. Approximation of these adsorbents’ adsorption capacity within pre-combustion capture temperature at 1 bar for oxy-combustion process was 0.0000026–48.71 mmol g⁻¹. It is crucial to understand and evaluate these adsorbents’ characteristics for application in the appropriate adsorption conditions. This considers their usage limitations on pilot-scale CO₂ capture because of low productivity, poor durability, and stability for prolonged cyclic adsorption–desorption, expensive adsorption system, high gas flow rate, high adsorbate accommodation requirement, longer flow switching time, and low tolerance towards water and impurities present in flue gas. This paper hence presents future enhancements in overcoming their limitations to accommodate pilot scale carbon capture. These are beneficial in providing insights for capturing CO₂ from flue gases emitted in industries. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd.

中文翻译：

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不同碳捕集技术工艺条件下 CO2 吸附剂性能的综述

各种传统和新兴固体吸附剂的利用是用于燃烧后和直接空气捕获 (DAC) 的一种有吸引力的碳捕获方法。本综述旨在确定在包括燃烧前、燃烧后和 DAC 在内的各种 CO ₂捕获条件下具有最高 CO ₂吸附性能的吸附剂，以帮助选择吸附剂。它介绍了各种吸附剂的物理和化学性质、它们的合成方法、CO ₂吸附性能以及它们作为CO ₂吸附剂的优势。审查结果表明，NaX@NaA 核壳微球在 5.60 mmol g ^{-1 时}具有最高的 CO ₂吸附能力用于在 DAC 条件下的吸附。MOF-177-TEPA在 4.60 mmol g ^-1的燃烧后条件下表现出最高的 CO ₂吸附容量，因为四亚乙基五胺的特性导致 CO _{2 的}扩散阻力低且易于接近活性位点。对于氧燃烧过程，这些吸附剂在 1 bar 的预燃烧捕获温度内的吸附容量的近似值为 0.0000026–48.71 mmol g ^-1。了解和评估这些吸附剂在适当吸附条件下的应用特性至关重要。这考虑了它们对中试规模 CO ₂的使用限制由于生产率低、耐久性差、长时间循环吸附-解吸的稳定性、昂贵的吸附系统、高气体流速、高吸附物容纳要求、较长的流动切换时间以及对烟道气中存在的水和杂质的低耐受性，因此无法捕获。因此，本文提出了在克服其限制以适应中试规模碳捕获方面的未来改进。这些有助于为从工业排放的烟道气中捕获 CO ₂提供见解。© 2021 化学工业协会和 John Wiley & Sons, Ltd.