High‐Performance CO 2 Adsorption of Nitrogen‐Doped Porous Carbons Synthesized From Coal Waste Precursors
石炭廃棄物前駆体から合成された窒素ドープ多孔性炭素の高性能CO2吸着 (AI 翻訳)
Rui Qiao, Yunhe Ding, Yahao Zhang, Zhiting Liu, Can Zhu, Yulong Zhang, Jiong Wang, Jiao Zhang, Yujing Weng
🤖 gxceed AI 要約
日本語
石炭タールピッチ、無煙炭、亜炭、ブルーコークスを前駆体として、KOH化学活性化と尿素窒素ドープにより多孔性炭素を合成し、CO2吸着性能を評価。超高度比表面積（最大3304 m2/g）と階層的細孔構造を実現し、窒素ドープにより吸着容量が25%向上（0.3 MPaで162.1 mg/g）。動的吸着試験では、30分のN2パージで88.5～96.6%の回復率を示し、優れたサイクル安定性を確認。石炭系多孔性炭素は低コストCCUS材料として有望。
English
Porous carbons synthesized from coal tar pitch, anthracite, lignite, and blue-coke via KOH activation and urea nitrogen doping exhibited ultrahigh specific surface area (up to 3304 m2/g) and hierarchical pores. Nitrogen doping improved CO2 adsorption capacity by 25% to 162.1 mg/g at 0.3 MPa. Cyclic stability tests showed recovery rates of 88.5–96.6% after 30 min N2 purging and full regeneration within 60 min. These coal-derived carbons demonstrate potential as low-cost adsorbents for industrial CO2 capture and CCUS.
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
この研究は、石炭廃棄物を原料とする低コストCO2吸着材の開発可能性を示しており、日本のCCUS技術開発や石炭火力発電のCO2削減対策に貢献する知見を提供する。
In the global GX context
This study advances low-cost CCUS materials by demonstrating high-performance CO2 adsorption using coal waste precursors, supporting global efforts to scale carbon capture technologies for industrial decarbonization.
👥 読者別の含意
🔬研究者:Provides detailed synthesis and characterization data for nitrogen-doped porous carbons from coal waste, useful for further optimization of adsorbents.
🏢実務担当者:Highlights a potential low-cost adsorbent for CO2 capture that could be integrated into CCUS processes for coal-fired power plants or industrial sources.
🏛政策担当者:Underlines the potential of coal waste valorization for CCUS, offering a pathway to reduce emissions while managing waste, relevant for climate policy and circular economy.
📄 Abstract（原文）
Intensifying global climate change and continuously increasing CO 2 emissions make the development of efficient, low‐cost CO 2 capture technologies a critical global challenge. Porous carbon materials have emerged as a research hotspot in CO 2 adsorption due to their high specific surface areas, tunable pore structures, and modifiable surface chemistry. In this study, coal tar pitch, anthracite, lignite, and blue‐coke were employed as precursors to prepare and characterize porous carbons via KOH chemical activation and urea‐assisted nitrogen doping, and their CO 2 adsorption performance was investigated. Experimental results demonstrate that the coal‐derived porous carbons exhibit superior structural characteristics, including an ultrahigh specific surface area (up to 3304 m 2 /g), hierarchical pore architecture, and abundant surface functional groups. Nitrogen doping significantly enhanced surface alkalinity and chemical adsorption capacity, achieving a CO 2 adsorption capacity of 162.1 mg/g at 0.3 MPa—a 25% improvement compared to undoped counterparts. Dynamic adsorption tests revealed good cyclic stability, with adsorption capacity recovery rates of 88.5%–96.6% after 30 min N 2 purging and complete regeneration within 60‐min purging. This study demonstrates coal‐based porous carbons’ excellent PSA performance, highlighting their potential as efficient, low‐cost adsorbents for industrial CO 2 capture and CCUS applications.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1002/ente.202502019first seen 2026-05-06 00:12:37
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