Low-pressure selective adsorption of CO2 and CH4 on carbon-based materials
炭素系材料による低圧下でのCO2およびCH4の選択的吸着 (AI 翻訳)
Zaineb Beji, Wahid Djeridi, W. Ahmed, Youssef Habibi, O. Mohamed Lemine, Lassaad El Mir, Sami Guiza
🤖 gxceed AI 要約
日本語
本研究では、3種類の炭素系材料（フェノールホルムアルデヒドキセロゲル、ニッケル修飾キセロゲル、オリーブストーン由来活性炭）を合成し、CO2とCH4の吸着性能を比較した。活性炭が最高の吸着容量を示し（CO2: 6.41 mmol/g）、ニッケル修飾試料は表面積あたりの効率が高かった。表面化学が選択性に重要な役割を果たすことを明らかにし、CCUS用途への材料設計指針を提供する。
English
This study synthesizes and compares three carbon-based adsorbents for CO2 and CH4 capture. Activated carbon from olive stones shows highest uptake (6.41 mmol/g CO2), while nickel-modified xerogels exhibit superior surface-normalized efficiency. Surface chemistry dominates selectivity, offering design strategies for efficient CCUS materials.
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CCUS技術の実用化を進めており、バイオマス由来活性炭のような低コスト吸着材は国内の廃棄物資源活用にもつながる可能性がある。ただし本研究はオリーブストーン由来であり、日本の農業廃棄物への応用にはさらなる検討が必要。
In the global GX context
Globally, CCUS is critical for hard-to-abate sectors. This paper advances low-cost adsorbent design using biomass waste, aligning with circular economy and decarbonization goals. The surface chemistry insights are transferable to various carbon capture applications.
👥 読者別の含意
🔬研究者:Provides material-level insights for designing selective carbon adsorbents via porosity and surface functionalization.
🏢実務担当者:May guide selection of cost-effective adsorbents for carbon capture processes, particularly from biomass sources.
🏛政策担当者:Supports development of efficient CCUS technologies, relevant for national climate strategies and innovation funding.
📄 Abstract（原文）
The increasing demand for sustainable technologies to mitigate greenhouse gas emissions has intensified research on efficient adsorbent materials for carbon dioxide and methane capture. In this work, three carbon-based materials, phenol formaldehyde xerogels, nickel-modified xerogels, and activated carbons derived from olive stones, were synthesized and systematically compared in terms of textural, structural, and adsorption properties. Comprehensive characterization revealed that both the pyrolysis temperature and nickel incorporation strongly influence porosity and surface functionality. Adsorption experiments demonstrated that activated carbon based on olive stones exhibits the highest total uptake for both gases, reaching 6.41 mmol/g for carbon dioxide and 2.75 mmol/g for methane compared to 4.41 and 2.79 mmol/g for phenol formaldehyde xerogels. In comparison, nickel-modified xerogels present an adsorption capacity of around 1.34 and 0.65 mmol/g, respectively, for carbon dioxide and methane under the same conditions. These results due to the large surface area and dominant microporosity of biomass-based samples. In contrast, the nickel-decorated sample shows superior surface-normalized adsorption efficiency, particularly at low pressures where surface interactions prevail. The presence of nickel introduced electroactive sites that enhanced carbon dioxide affinity by way of quadrupolar interactions and improved methane adsorption through localized polarization effects. These findings highlight that surface chemistry plays a more decisive role than textural parameters in determining selectivity and adsorption performance under realistic conditions. Overall, this study establishes a rational design strategy for next-generation carbon adsorbents combining engineered porosity and functionalized surfaces, paving the way for energy-efficient carbon dioxide and methane separation processes.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1680/jgrma.26.00029first seen 2026-07-02 05:34:27
🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録（無料・3キーワードまで）。
gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。