Steam reforming of methane and biogas: Thermodynamic and kinetic review for hydrogen production

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:Researchers in chemical engineering and catalysis will find detailed thermodynamic and kinetic models to guide further studies.

🏢実務担当者:Practitioners in hydrogen production can use the S/C ratio and temperature findings to optimize reactor design and reduce coke formation.

🏛政策担当者:Policymakers supporting hydrogen infrastructure can reference this as evidence of technical readiness for biogas-based hydrogen.

本稿は、メタンおよびバイオガスの水蒸気改質プロセスに関する熱力学的レビューを提示し、CH4（40–100 vol%）およびCO2（0–50 vol%）濃度の変動と、1.0–3.0の範囲の水蒸気対炭素（S/C）比の影響を検討する。熱力学的評価の詳細なレビューを提供し、反応経路を探求し、これらの改質プロセスに関連する速度論モデルをレビューする。水蒸気バイオガス改質（SBR）法の技術的評価と、それに関連するエネルギーについても提供する。分析により、固定温度でのS/C比の増加はCH4転換率を約70–95%向上させ、水素（H2）収率を20–55%増加させることが示され、最大H2生成は通常、水性ガスシフト（WGS）反応の優位性によりS/C比2:1から3:1で観察される。水蒸気の添加は、コークスガス化の促進を通じてコークス生成を約20–50%大幅に抑制し、一方CO2濃度の増加はCO生成を促進し、550°C以上の温度ではCO2支援ガス化反応によりコークス選択性をさらに低減させる。これらの知見は、メタンおよびバイオガスからの工業的水素生成の最適化を導き、効率を改善し炭素析出を低減するとともに、炭素回収および燃料電池技術と統合された低炭素改質システムの開発を支援する。

AI 翻訳（deepseek-v4-flash）。 正確を期す場合は下の原文を参照してください。

This article presents a thermodynamic review of steam reforming processes for methane and biogas, examining the effects of varying CH4 (40–100 vol%) and CO2 (0‐50 vol%) concentrations and steam‐to‐carbon (S/C) ratios in the range of 1.0–3.0. It offers a detailed review of thermodynamic assessment, explores reaction pathways, and reviews the kinetic models associated with these reforming processes. A technical evaluation of the steam biogas reforming (SBR) method and its related energy is also offered. The analysis shows that increasing the S/C ratio at a fixed temperature enhances CH4 conversion by approximately 70–95% and increases hydrogen (H2) yield by 20–55%, with maximum H2 production typically observed at S/C ratios of 2:1 to 3:1 due to the dominance of the water‐gas shift (WGS) reaction. Steam addition significantly suppresses coke formation by about 20–50% through enhanced coke gasification, while increasing CO2 concentration promotes CO formation and further reduces coke selectivity at temperatures above 550°C via CO2‐assisted gasification reactions. These findings guide the optimization of industrial hydrogen production from methane and biogas, improving efficiency and reducing carbon deposition, and support the development of low‐carbon reforming systems integrated with carbon capture and fuel cell technologies.

• semanticscholar https://doi.org/10.1002/ep.70345first seen 2026-05-06 00:15:00 · last seen 2026-08-12 05:22:52