Enhancing CO2 hydrate kinetics with cost-effective calcium-based montmorillonite for carbon capture
CO2ハイドレート速度論の強化: 炭素回収のための費用効果的なカルシウム系モンモリロナイト (AI 翻訳)
Hongyu Ye, Peng Dong, Mengya Niu, Yuanxin Yao, Daoyi Chen, Jun Duan, Mucong Zi
🤖 gxceed AI 要約
日本語
モンモリロナイト(MMT)という安価な天然材料を用いてCO2ハイドレート形成を促進し、炭素回収効率を向上させる研究。MMT濃度、SDS添加、攪拌、酸性処理などの効果を検討した結果、1wt%の改質MMTでCO2回収容量93.9 mmol/molを達成し、83.9%の改善を示した。これにより、コスト効率の高いハイドレートベースCO2回収技術への新たな知見を提供する。
English
This study explores the use of montmorillonite (mmt), an abundant and cheap natural material, to enhance CO2 hydrate kinetics for carbon capture. Systematic experiments show that 1 wt% acid-leached mmt achieves a CO2 capture capacity of 93.9 mmol/mol, an 83.9% improvement over pristine mmt, offering a cost-effective pathway for hydrate-based CO2 capture.
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
CCUSは日本のGX戦略の重要要素であり、コスト低減が課題。本論文は安価な天然素材によるハイドレート法の効率向上を示し、日本のCCSプロジェクトへの応用可能性を示唆する。
In the global GX context
CCUS is critical for global net-zero targets. This paper demonstrates a low-cost, abundant material to improve hydrate-based CO2 capture kinetics, reducing a key barrier to deployment and offering scalable solutions for industrial carbon capture.
👥 読者別の含意
🔬研究者:Provides a systematic investigation of montmorillonite for hydrate-based CO2 capture, offering insights into material modification and process optimization.
🏢実務担当者:Highlights a cost-effective additive that could enhance CO2 capture efficiency in hydrate-based systems, potentially lowering operational costs.
🏛政策担当者:Supports the development of affordable CCUS technologies by demonstrating the viability of natural, low-cost materials.
📄 Abstract（原文）
Abstract CO 2 emission-driven climate change demands efficient CCUS technology. Montmorillonite (mmt) is an abundant, cheap, and eco-friendly terrestrial porous material, with the potential to turn from a passive geological medium to an active functional material for carbon capture. However, hydrate-based CO 2 capture, though promising for high storage density and eco-friendliness, is hindered by slow kinetics and high energy use. To address this, our study systematically explores the enhancement of CO 2 hydrate kinetics using mmt through both external optimization and intrinsic modification, by considering the effect of mmt concentration, SDS compounding, stirring rate, comparison with illite, and acid-leached modification. Results indicate that (i) mmt suspensions promote both the CO 2 hydrate nucleation and growth, particularly with low concentration, while the enhancement of mass transfer is crucial for the high concentration-mmt system. (ii) Subsequently, the addition of SDS (≥ 1000 ppm) can form micelles to enrich aqueous CO 2 locally, and the application of stirring (600 rpm) disrupted hydrate films to enable continuous CO 2 supply, which has both proved effective to promote CO 2 capture. (iii) The non-expandable illite performed worse than mmt, highlighting the expandable layers and high specific surface area for enhancing hydrate kinetics. This is further verified by acid leaching modification of mmt (m-mmt) that transforms its structure into a highly porous amorphous network. Notably, 1 wt% m-mmt achieved a CO 2 capture capacity of 93.9 mmol/mol, representing an 83.9% improvement over pristine mmt. These findings demonstrate the promising promotion effect of mmt for CO 2 hydrate, offering new insights for advancing cost-effective hydrate-based CO 2 capture. Graphical Abstract
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1007/s43979-026-00172-zfirst seen 2026-05-17 07:30:41 · last seen 2026-05-20 05:18:22
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