Plasma-catalytic methane pyrolysis for hydrogen and graphitic carbons
プラズマ触媒メタン熱分解による水素とグラファイト系炭素の生成 (AI 翻訳)
Abhinav Nouduri, Shailesh Pathak, Arjun Thapa, William McGinley, Gautam Gupta, Sreedevi Upadhyayula, Mahendra Sunkara
🤖 gxceed AI 要約
日本語
本論文は、プラズマ励起を用いた低融点金属合金（Ga, Ga-Sn, Ga-Ni）によるメタン熱分解法を提案。純メタンまたはアセチレンを用いた実験により、水素とグラファイト系炭素を完全熱分解する経路を示した。生成炭素は結晶性で金属汚染がなく、リチウムイオン電池負極材料として600 mAh/gの容量を示した。
English
This paper presents a plasma-catalytic approach for methane pyrolysis using low-melting-point metal alloys (Ga, Ga-Sn, Ga-Ni) to produce hydrogen and graphitic carbons. Experiments with pure methane or acetylene demonstrate complete pyrolysis, yielding crystalline carbons without metal contamination. The carbons exhibit morphologies from onion-like to vertical graphitic walls and show a capacity of 600 mAh/g as lithium-ion battery anodes.
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
日本は水素社会の実現を目指しており、メタン熱分解はCO2排出を伴わない水素製造法として注目される。本技術は触媒にガリウム系合金を用いる点で新規性が高く、国内の水素サプライチェーン構築において、低コスト・高効率な水素製造プロセスとして応用が期待される。
In the global GX context
Methane pyrolysis offers a route to hydrogen production without CO2 emissions, producing solid carbon instead. This work advances catalyst design using molten metals, which can potentially be integrated into industrial-scale hydrogen production, contributing to global decarbonization of the hydrogen sector.
👥 読者別の含意
🔬研究者:Highlights a novel molten metal catalyst for methane pyrolysis to produce hydrogen and valuable carbon nanomaterials, relevant to clean energy research.
📄 Abstract（原文）
In this paper, we discuss an approach for activating and pyrolyzing methane over low-temperature molten metal-based alloys involving Gallium, Gallium-Tin (Ga-Sn) and Gallium-Nickel (Ga-Ni) using plasma excitation of hydrocarbon gases. Specifically, experiments performed using either pure methane or acetylene suggest a pathway for complete pyrolysis to produce hydrogen and graphitic carbons. The carbons produced are crystalline, as verified by X-ray Diffraction (XRD) and do not contain any metal contamination as observed in elemental analysis. The carbons produced exhibited morphologies ranging from onion-like structures to dendritic to vertical graphitic walls. The mechanism of methane pyrolysis seems to involve dissolution of radicals into molten Ga and then undergo dehydrogenation reactions leading to carbon nucleation and growth on the molten Ga surface. The immiscibility and non-wettability of carbon in molten Ga allows for easier separation of the resulting carbons. The electrochemical lithiation and de-lithiation studies showed that the resulting carbons exhibited a capacity of 600 mAh/g after 30 cycles at a rate of 50 mA/g. The observed higher capacity than the theoretical value of 372 mAh/g for graphite is due to the high surface area for the as-produced nano-carbons.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.cartre.2026.100663first seen 2026-06-23 05:31:02
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