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Hydrogen production from low-ash coal gasification: recent advances, challenges, carbon capture and storage technologies

低灰分炭ガス化による水素製造:最近の進歩、課題、炭素回収・貯留技術 (AI 翻訳)

Dheeraj Singh, Ankur Dwivedi, Tarun Verma

International Journal of Coal Preparation and Utilization📚 査読済 / ジャーナル2026-08-10#水素対象セクター: energy
DOI: 10.1080/19392699.2026.2714541
原典: https://doi.org/10.1080/19392699.2026.2714541

🤖 gxceed AI 要約

日本語

本レビューは、低灰分炭のガス化による水素製造技術を包括的に概説し、ガス化方式、合成ガス精製、水素純化、CCS統合の最新動向を整理する。石炭種、運転条件、触媒効率が水素収率と合成ガス組成に与える影響を比較し、高度なガス化と効率的な精製・CCSの統合が環境影響を抑えつつ水素製造を強化できると結論付ける。課題として炭素管理、プロセス最適化、触媒耐久性、コスト競争力を挙げ、今後の研究方向性を示す。

English

This review comprehensively surveys hydrogen production via low-ash coal gasification, covering gasification technologies, syngas cleaning, hydrogen purification, and CCS integration. It compares coal types, operating conditions, and catalyst efficiency on hydrogen yield and syngas composition, concluding that integrating advanced gasification with efficient purification and CCS can enhance hydrogen production while minimizing environmental impacts. Key challenges include carbon management, process optimization, catalyst durability, and cost competitiveness, with future work focusing on better catalysts, gas separation, and large-scale CCS.

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

日本は石炭火力の水素混焼やアンモニア混焼を進めており、石炭ガス化水素は水素社会実現の一翼を担う可能性がある。ただし、CCSの社会実装が不可欠であり、日本のCCS政策や水素基本戦略と関連する。

In the global GX context

Globally, coal gasification with CCS is a key pathway for low-carbon hydrogen, especially in coal-rich economies. This review contributes to the discourse on clean hydrogen production and carbon management, relevant to ISSB/TCFD disclosure on transition risks and opportunities in the energy sector.

👥 読者別の含意

🔬研究者:Provides a consolidated overview of low-ash coal gasification for hydrogen, highlighting research gaps in catalysts and CCS integration.

🏢実務担当者:Offers insights into technology options for hydrogen production from coal, relevant for companies assessing low-carbon hydrogen projects.

🏛政策担当者:Informs policy on supporting CCS deployment and hydrogen strategies in coal-dependent regions.

📄 Abstract(原文)

Hydrogen is widely considered a clean energy source essential for accomplishing decarbonization and sustainability goals. For the coal rich countries, gasification using low-ash coal provides a reliable, affordable approach to hydrogen production due to its efficiency and syngas quality, though carbon emissions require appropriate gas purification and mitigation techniques. The utilization of low-ash coal for gasification to generate hydrogen is addressed in this review, accompanied by gasification technology, syngas production, gas cleaning techniques, hydrogen purification, and carbon capture and storage (CCS). The review points to the potential advances in steam and oxy-steam gasification, catalytic processes, H2S removal, and better quality of the syngas while comparing coal types, operating conditions, and catalyst efficiency in terms of hydrogen yield and syngas composition. Environmental and economic impacts are also examined. Findings suggest that integrating advanced gasification with efficient purification and CCS can enhance hydrogen production simultaneously, minimizing adverse environmental effects. Key challenges remain in carbon management, process optimization, catalyst durability, and cost competitiveness. Future work should prioritize more efficient catalysts, improved gas separation methods, and large-scale CCS implementation to enable clean hydrogen production from low ash coal.

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