Clay Minerals and CO2 Capture, Utilization and Storage

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Clays and Engineered Mineral Materials".

Deadline for manuscript submissions: closed (21 March 2025) | Viewed by 2010

Special Issue Editor


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Guest Editor
School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China
Interests: clay minerals and CO2 capture, utilization and storage; clay-based CO2 adsorbents and catalysts; comprehensive utilization of mineral resources

Special Issue Information

Dear Colleagues,

CO2 capture, utilization and storage (CCUS) technology has been regarded as the most effective way to reduce industrial CO2 emissions, mitigate the greenhouse effect and realize strategic goals of carbon neutrality. Geologic clay minerals are excellent cost-effective candidates for environmental materials with a large specific surface area, remarkable adsorption capability, low cost, high mechanical properties and chemical stability. Efficient and economical technologies focusing on clay minerals in CO2 capture, utilization and storage are eagerly desired. This Special Issue aims to present the most updated advances in clay minerals in CO2 capture, utilization and storage technologies, which are involved in the novel synthesis route of clay-based adsorbents and catalysts, clay mineral-derived materials for CCUS, efficient and economical CO2 mineralization and storage processes and the application prospect of clay minerals in CCUS processes. This Special Issue will cover but is not limited to the following topics:

  • Clay minerals in CO2 capture;
  • Clay minerals in CO2 utilization and conversion;
  • Clay minerals in CO2 mineralization and storage;
  • Clay-based CO2 adsorbents;
  • Comprehensive utilization of mineral resources;
  • Carbon neutrality;
  • CO2 mitigation technology.

Dr. Xiaoyu Li
Guest Editor

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Keywords

  • clay minerals in CO2 capture
  • clay minerals in CO2 utilization and conversion
  • clay minerals in CO2 mineralization and storage
  • clay-based CO2 adsorbents
  • comprehensive utilization of mineral resources
  • carbon neutrality
  • CO2 mitigation technology

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Published Papers (2 papers)

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Research

14 pages, 7485 KiB  
Article
Supported Hybrid Amines Within Porous Aluminosilicate Clays with Natural Different Morphologies for Efficient CO2 Capture
by Xiaoyu Li, Jie Chen, Wenqing Zhang, Chenyu Wang, Hui Ma, Kang Peng and Zheng Zhou
Minerals 2025, 15(5), 506; https://doi.org/10.3390/min15050506 - 9 May 2025
Viewed by 322
Abstract
The urgent need for efficient CO2 capture technologies has driven research into amine-functionalized adsorbents, though existing methods face trade-offs between adsorption capacity and cycling stability. This study addresses these limitations by developing a novel hybrid modification strategy combining chemical grafting and physical [...] Read more.
The urgent need for efficient CO2 capture technologies has driven research into amine-functionalized adsorbents, though existing methods face trade-offs between adsorption capacity and cycling stability. This study addresses these limitations by developing a novel hybrid modification strategy combining chemical grafting and physical impregnation on polymorphic kaolinite minerals. Through systematic acid leaching and hybrid grafting–impregnation amine functionalization, the adsorbents with hierarchically porous structures and optimized performances are synthesized. The tubular adsorbent (ATK-APTES-PEI) demonstrated exceptional performance, achieving a CO2 uptake of 1.68 mmol/g at 75 °C under a 60% CO2/40% N2 mixed gas flow, with only 5.3% capacity loss after 10 adsorption–desorption cycles, significantly outperforming both rod-like (ARK-APTES-PEI, 1.55 mmol/g) and flake-like (AFK-APTES-PEI, 1.23 mmol/g) variants. The unique pore structure of ATK-APTES-PEI enables simultaneous high amine loading and maintained gas diffusion pathways, while the hybrid modification strategy synergistically enhances both adsorption capacity and stability by increasing active surface sites. These findings establish critical structure–property relationships for mineral-based adsorbents and demonstrate a scalable approach for industrial CO2 capture applications. The work provides a blueprint for designing cost-effective, stable adsorbents using abundant clay minerals, bridging materials science with environmental engineering for sustainable carbon management solutions. Full article
(This article belongs to the Special Issue Clay Minerals and CO2 Capture, Utilization and Storage)
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15 pages, 4111 KiB  
Article
Utilizing Magnesium Carbonate Induced by CO2 to Modify the Performance of Plastic Clay
by Hadi Mohamadzadeh Romiani, Hamed Abdeh Keykha, Saeed Chegini, Afshin Asadi and Satoru Kawasaki
Minerals 2024, 14(9), 876; https://doi.org/10.3390/min14090876 - 28 Aug 2024
Viewed by 1204
Abstract
Highly plastic clays pose significant challenges in engineering projects. Various techniques have been employed to enhance their properties, though many face difficulties related to implementation and environmental impact. This study examines the effect of CO2-induced magnesium carbonate on improving the geotechnical [...] Read more.
Highly plastic clays pose significant challenges in engineering projects. Various techniques have been employed to enhance their properties, though many face difficulties related to implementation and environmental impact. This study examines the effect of CO2-induced magnesium carbonate on improving the geotechnical behavior of plastic clay. CO2-induced magnesium carbonate was produced via mineral carbonation and used to improve the behavior of highly plastic natural clay. CO2 gas was injected into a sodium hydroxide solution to produce carbonate ions (CO32−). Magnesium carbonate was precipitated on a laboratory scale by adding magnesium sulfate solution to the carbonate ion solution. Clayey soil samples were obtained from test pits in the Meyghan Plain near Arak, Iran. The clay samples were treated with different percentages of the produced magnesium carbonate. Various parameters of the treated and untreated samples, including index properties, unconfined compressive strength, consolidation behavior, and swelling potential, were studied. It was found that the liquid limit and plasticity index of the treated clay decreased as the magnesium carbonate content increased. The soil classification changed from high plastic clay (CH) to low plastic silt (ML) with the addition of 15% magnesium carbonate to the highly plastic clay. The unconfined compressive strength of the treated clay increased. Additionally, the consolidation behavior and swelling index of the treated clay improved as the magnesium carbonate content increased. This study confirms that CO2-induced magnesium carbonate is a promising material for improving the behavior of highly plastic clays, offering a sustainable approach to environmental management. Full article
(This article belongs to the Special Issue Clay Minerals and CO2 Capture, Utilization and Storage)
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