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Catalyst-Free Methane Decomposition Using Microwave-Assisted Plasma: A Simple Green Solution Toward Mitigation of Greenhouse Gases

マイクロ波支援プラズマを用いた無触媒メタン分解:温室効果ガス削減に向けたシンプルでグリーンな解決策 (AI 翻訳)

Subham Chowdhury, Nitin Kumar, H. Khatun, Ranjan Kumar Barik, Ayan Kumar Bandyopadhyay, Anirban Bera

IEEE Transactions on Plasma Science📚 査読済 / ジャーナル2026-02-01#水素Origin: Global対象セクター: energy
DOI: 10.1109/tps.2026.3652587
原典: https://doi.org/10.1109/tps.2026.3652587

🤖 gxceed AI 要約

日本語

本論文は、マイクロ波支援プラズマを用いて触媒なしでメタンを水素と炭素ナノ粒子に変換する技術を提案。95%以上の分解効率と90%以上の水素生成効率を達成し、再生可能エネルギー利用時には従来比93.75%の炭素排出削減が可能。スケーラブルな温室効果ガス削減手法として注目される。

English

This paper presents a catalyst-free microwave-assisted plasma technique for methane decomposition, achieving >95% decomposition efficiency and >90% hydrogen production. When powered by renewables, net carbon emissions are reduced by 93.75% compared to conventional processes. The method produces high-purity carbon nanoparticles (99%, ~40 nm). It offers a scalable green solution for hydrogen production and GHG mitigation.

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

日本は水素基本戦略を掲げ、メタン分解技術は国産水素製造やメタン排出削減に寄与する可能性がある。本研究成果は、従来の水蒸気改質に代わるCO2フリー水素製造技術として注目される。

In the global GX context

Globally, methane pyrolysis is gaining attention as a low-carbon hydrogen production route. This paper demonstrates a scalable, catalyst-free plasma method that achieves high efficiency and product purity, relevant to the global hydrogen economy and methane abatement efforts.

👥 読者別の含意

🔬研究者:This paper provides a novel approach to methane pyrolysis with high efficiency and product quality, offering a potential path for scalable hydrogen production.

🏢実務担当者:Corporate sustainability teams can consider this technology for on-site hydrogen production and carbon nanomaterials, reducing Scope 1 methane emissions.

🏛政策担当者:The method's 93.75% emission reduction with renewables supports hydrogen policy and methane abatement strategies.

📄 Abstract(原文)

This article presents a sustainable, cost-effective, fast, and eco-friendly microwave-assisted plasma technique for converting methane, a hazardous greenhouse gas (GHG), into value-added products. A proof-of-concept system is reported that employs high-power microwave (MW) energy to decompose methane into hydrogen and carbon nanoparticles (CNPs) through a catalyst-free, high-temperature plasma (<inline-formula> <tex-math notation="LaTeX">$\gt\!\!\!1500~^{\circ }$ </tex-math></inline-formula>C) process. The system addresses critical challenges such as remote plasma ignition, flame isolation, and precise fluid and thermal management to ensure stable operation and steady methane conversion. The developed system achieves a methane decomposition efficiency exceeding 95%, with plasma temperatures surpassing <inline-formula> <tex-math notation="LaTeX">$1500~^{\circ }$ </tex-math></inline-formula>C and hydrogen production efficiency above 90%. The synthesized CNPs exhibit a mean particle size of 39.93 nm and a purity of approximately 99%, confirming their high-quality formation. An energy assessment demonstrates a 93.75% reduction in net carbon emissions when powered by renewable energy sources, compared to conventional processes. These findings highlight the system as a potentially scalable and environmentally sustainable solution for methane valorization and GHG mitigation.

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