Kaolin-derived zeolite enables high-performance carbon capture with gigaton-scale potential
カオリン由来ゼオライトが高性能CO2回収を実現、ギガトン規模の可能性 (AI 翻訳)
Jinlei Li, Junyan Li, Siyuan Fang, Ge Zhang, Pu Zhang, S. Shum, Zimo Zhang, Yi Cui
🤖 gxceed AI 要約
日本語
本研究では、カオリン粘土から高性能なLTAゼオライトを合成し、CO2吸着容量で従来の粘土由来ゼオライトを凌駕することを示した。大気中から排ガス条件まで広い濃度範囲で高容量を達成し、50サイクル以上の安定性を確認。さらに、放射冷却と太陽熱加熱を組み合わせたパッシブ運転の可能性も提示。地球豊富な材料とスケーラブルなプロセスでギガトン級CO2回収への道を開く。
English
This study demonstrates that kaolin clay can be converted into high-performance LTA zeolite for CO2 capture, achieving record adsorption capacities across a wide concentration range (from ambient air to flue gas) with excellent cycling stability. The synthesis uses scalable processes compatible with existing industrial infrastructure. A proof-of-concept for passive operation using radiative cooling and solar heating is provided, suggesting a low-carbon pathway for carbon 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
日本ではCCUSの実用化が進む中、安価で豊富な材料を用いた本技術は、国内でのCO2回収コスト低減に貢献する可能性がある。特に、既存の産業インフラと互換性のある合成プロセスは、日本の化学工業との親和性が高い。
In the global GX context
This work addresses a key bottleneck in carbon capture: the need for low-cost, scalable sorbents derived from abundant materials. The demonstration of passive energy integration (radiative cooling and solar heating) aligns with global efforts to minimize energy penalties in CCS. The gigaton-scale potential, if validated, could significantly impact climate mitigation scenarios.
👥 読者別の含意
🔬研究者:Material scientists and CCUS researchers will find a novel sorbent synthesis route with record performance and scalability potential.
🏢実務担当者:Carbon capture project developers can evaluate this kaolin-derived zeolite as a candidate for large-scale deployment, pending pilot-scale validation.
🏛政策担当者:Policymakers supporting CCUS innovation should note the potential for low-cost sorbents from abundant raw materials, which could reduce reliance on imported materials.
📄 Abstract（原文）
ABSTRACT Gigaton-scale carbon dioxide (CO2) capture is an indispensable part of the way towards global carbon neutrality, but has lagged in developing an adsorbent that simultaneously has high performance, low cost, and scalability from earth-abundant raw materials coupled with industrially compatible synthesis processes. Here we discover that high-performing CO2 adsorbent of Linde Type A (LTA) zeolite can be converted from ubiquitous kaolin clay (reserves >30 gigatons) via scalable processes and exhibits record high CO2 uptake with good cycling stability. The synthesis route, comprising mainly calcination and a hyperthermal reaction, is readily compatible with existing industrial infrastructure and avoids the use of complex or toxic chemicals. Benefiting from an optimized crystal structure for CO2 trapping, the material achieves CO2 adsorption capacities that surpass all previously reported clay-derived zeolites across a wide concentration range, from ambient air (∼400 ppm) to flue gas conditions (<20%). It also maintains stable performance over 50 adsorption–desorption cycles. Beyond material and method development, we provide a proof-of-concept showing that integrating radiative cooling for CO2 adsorption and solar heating for sorbent regeneration could enable a low-carbon pathway for passive sorbent operation. This study offers a feasible route to explore scalable carbon capture using widely available materials and passive energy strategies.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1093/nsr/nwag064first seen 2026-05-05 23:38:37
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