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Ultrafast preparation of honeycomb N‐doped carbon via flash joule heating for efficient capture of <scp> C <sub>2</sub> H <sub>4</sub> F <sub>2</sub> </scp> refrigerant

フラッシュジュール加熱によるハニカム状窒素ドープ炭素の超高速調製とC2H4F2冷媒の効率的捕捉 (AI 翻訳)

Meng Fan-peng, Ming-Shuai Sun, Wei Hui, Yan Zhou, Fei-Feng Mao, Jia‐Yin Zhang, Dandan Cai, Duan‐Jian Tao

AIChE Journal📚 査読済 / ジャーナル2026-05-08#CCUSOrigin: CN
DOI: 10.1002/aic.70456
原典: https://doi.org/10.1002/aic.70456

🤖 gxceed AI 要約

日本語

本論文は、フラッシュジュール加熱法を用いて約20秒でハニカム状の窒素ドープ炭素（NPC-FJH）を合成し、冷媒C2H4F2の吸着特性を評価した。NPC-FJHは高い吸着容量（12.37 mmol g−1）と選択性（420）を示し、三元混合ガスからの選択的分離と10サイクル以上の再使用性を実証した。この技術はHFC排出削減に寄与する可能性がある。

English

This paper reports ultrafast (20 seconds) preparation of honeycomb N-doped carbon (NPC-FJH) via flash Joule heating for capturing the refrigerant C2H4F2. NPC-FJH shows high adsorption capacity (12.37 mmol g−1) and selectivity (up to 420) at 25°C and 100 kPa, with ultrafast kinetics (99 seconds to saturation). Breakthrough tests demonstrate selective separation from ternary gas mixtures and excellent reusability over 10 cycles, highlighting potential for HFC emission reduction.

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

日本ではフロン類の規制が厳しく、代替冷媒への移行や既存冷媒の回収・破壊が進められている。本研究の高速合成法は、冷媒捕捉材料の実用化に向けた可能性を示すが、現状では実験室段階であり、実機適用にはさらなる検討が必要である。

In the global GX context

Globally, HFCs are potent greenhouse gases targeted for phase-down under the Kigali Amendment. This work offers a rapid synthesis method for carbon adsorbents that could enhance capture technologies. However, scalability and real-world performance remain to be demonstrated.

👥 読者別の含意

🔬研究者:Provides a novel rapid synthesis method for hierarchical porous carbon with high HFC adsorption performance, relevant to materials science and gas separation research.

📄 Abstract（原文）

Abstract Developing advanced adsorbents for efficient capture of phase‐out hydrofluorocarbons (HFCs) is imperative for reducing emissions of deleterious compounds (e.g., 1,1‐difluoroethane, C 2 H 4 F 2 ). Here, honeycomb N‐doped carbons (NPC‐FJH) with hierarchical porosity were rapidly prepared (~20 s) using flash Joule heating (FJH) for C 2 H 4 F 2 adsorption. The structural and adsorption properties of NPC‐FJH were compared with NPC‐TF obtained via tubular furnace (TF). NPC‐FJH have remarkable C 2 H 4 F 2 uptake capacities (12.37 mmol g −1 ), selectivities (up to 420) at 25°C and 100 kPa than their NPC‐TF counterparts. Density functional theory (DFT) revealed that N and adjacent C atoms enhance host‐guest interactions. Moreover, NPC 2.5 ‐FJH 800 demonstrates ultrafast adsorption kinetics (99 s to saturation) and a favorable diffusion coefficient ( D / r 2 = 3.49 ms −1 ). Breakthrough tests demonstrated that NPC 2.5 ‐FJH 800 achieved the selective separation of C 2 H 4 F 2 in ternary gas mixtures (N 2 /C 2 H 2 /C 2 H 4 F 2 ), with negligible capacity loss over 10 cycles, demonstrating its excellent reusability and significant potential for practical applications.

🔗 Provenance — このレコードを発見したソース

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