Oxygen-Rich Carbons Prepared by K2CO3 Activation of Phenolic Resin for Efficient CO2 Capture
CO2効率的回収のためのK2CO3賦活化フェノール樹脂由来の酸素リッチカーボン (AI 翻訳)
Yujia Yin, Yuanyuan Xu, Wenyu Shen, Ya Liu, Müslüm Demir, Parya Aghamohammadi, Linlin Wang, Xin Hu
🤖 gxceed AI 要約
日本語
フェノール樹脂をK2CO3で賦活化し、酸素含有多孔質カーボンを合成。最適化により1065 m2/gの表面積と0.54 cm3/gの細孔容積を達成し、0°Cで5.48 mmol/g、25°Cで3.92 mmol/gのCO2吸着能を示した。狭いミクロ孔が性能を支配し、CO2/N2選択性15、迅速な吸着速度、優れた安定性を確認。
English
Oxygen-rich porous carbons were synthesized from phenolic resin via K2CO3 activation. The optimized carbon achieved a surface area of 1065 m2/g and narrow micropore volume, with CO2 uptake of 5.48 mmol/g at 0°C and 3.92 mmol/g at 25°C. Narrow microporosity dominated performance, showing high CO2/N2 selectivity, fast kinetics, and good stability.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本のカーボンリサイクル戦略やCCUS技術開発に資する材料研究。ただし、実用化にはスケールアップやコスト評価が必要で、現時点では基礎研究段階。
In the global GX context
This material research contributes to global CCUS technology development, particularly for post-combustion CO2 capture. The findings on pore engineering and oxygen functionalities offer insights for designing efficient adsorbents, relevant to global decarbonization efforts.
👥 読者別の含意
🔬研究者:CO2吸着材の細孔設計と酸素官能基の相乗効果に関する知見を提供。
🏢実務担当者:CCUSプロセスにおける吸着材選定の基礎データとして参考になる。
📄 Abstract（原文）
Developing adsorbents with rapid kinetics and high adsorption capacity is essential for efficient CO2 capture. Herein, oxygen-rich porous carbons were synthesized from phenolic resin through K2CO3 activation. By systematically varying the activation temperature and K2CO3/precursor ratio, the evolution of pore structure and its influence on CO2 adsorption behavior were comprehensively investigated. The reaction between K2CO3 and the carbon matrix generated abundant micropores while preserving oxygen-containing surface functionalities, leading to enhanced adsorption affinity toward CO2 molecules. The optimized carbon exhibited a high specific surface area of 1065 m2 g−1 and a narrow micropore volume of 0.54 cm3g−1, delivering equilibrium CO2 uptake capacities of 5.48 and 3.92 mmol g−1 at 0 and 25 °C under 1 bar, respectively. In-depth analysis revealed that narrow microporosity played a more dominant role than total surface area in determining adsorption performance. Moreover, the optimized adsorbent showed a CO2/N2 selectivity of 15; rapid adsorption kinetics, with 90% of equilibrium capacity achieved within 4.5 min; and a dynamic CO2 capture capacity of 0.91 mmol g−1. The moderate isosteric heat of adsorption (20–36 kJ mol−1) and excellent cyclic stability further confirmed the physisorption-dominated nature of the process. This work highlights the synergistic role of ultramicropore engineering and oxygen-containing surface functionalities in designing efficient porous carbon adsorbents for carbon capture.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/chemistry8080107first seen 2026-08-05 04:55:47
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