Application of Porous Materials in CO2 Capture

A special issue of Clean Technologies (ISSN 2571-8797).

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 8145

Special Issue Editors

College of Environmental Science and Engineering, Tongji University, Shangai 200092, China
Interests: research on the preparation, application and structure-activity relationship of environmental porous functional materials

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Guest Editor
Institute for Integrated Cell-Material Science (WPI-iCeMS), Kyoto University, Kyoto 606-8501, Japan
Interests: research on the preparation and application of porous soft materials for practical use

Special Issue Information

Dear Colleagues,

As increasing attention has been paid on global warming, CO2 capture is vital to relieve environmental pressure and sustainable development. Currently, aqueous alkanolamine solutions are commonly used to capture CO2, generating large amounts of organic waste and requiring huge energy input for regeneration. In light of this, developing porous materials has seen significant growth in recent years considering the tremendous energy savings. Some of the synthesized porous materials have been evaluated for CO2 capture at the laboratory scale. However, to meet the future carbon neutrality target, a transition from current-phase to next-generation CO2 capture materials with better CO2 recognition performance, higher capacity, lower regeneration energy consumption, lower costs, and long-term cycling ability is inevitable. This transition will include not only the development, characterization, and modification of porous adsorbents, but also the development of pressure swing adsorption (PSA) CO2 capture systems at the industry scale.

In this Special Issue, we are looking for contributions helping to:

  • Understand the CO2 capture mechanisms through in situ and simulation analysis;
  • Determine the impact of structural properties on the CO2 capture materials’ overall performance;
  • Offer design principles of materials with high adsorption capacity and ideal adsorption selectivity for CO2 capture;
  • Develop CO2 capture systems at the industry scale.

The topics of interest include but are not limited to:

  • The design of CO2 capture systems based on porous materials;
  • Industry CO2 technologies;
  • Direct air capture technologies;
  • Structure–activity relationship of CO2 capture materials;
  • CO2 sorption modeling and simulation.

Dr. Yifan Gu
Dr. Zaoming Wang
Guest Editors

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Keywords

  • CO2 capture
  • CO2 storage
  • metal-organic frameworks
  • covalent-organic frameworks
  • hydrogen-bonded organic frameworks
  • zeolite and carbon materials
  • other porous materials

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Published Papers (2 papers)

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Research

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15 pages, 4350 KiB  
Article
Graphene Embedded with Transition Metals for Capturing Carbon Dioxide: Gas Detection Study Using QM Methods
by Fatemeh Mollaamin and Majid Monajjemi
Clean Technol. 2023, 5(1), 403-417; https://doi.org/10.3390/cleantechnol5010020 - 9 Mar 2023
Cited by 16 | Viewed by 2588
Abstract
Carbon dioxide (CO2) adsorption on decorated graphene (GR) sheets with transition metals (TMs) including iron, nickel and zinc was investigated for removing this hazardous gas from the environment. TM-doped GR results in higher activity toward gas detecting than pristine graphene nanosheets. [...] Read more.
Carbon dioxide (CO2) adsorption on decorated graphene (GR) sheets with transition metals (TMs) including iron, nickel and zinc was investigated for removing this hazardous gas from the environment. TM-doped GR results in higher activity toward gas detecting than pristine graphene nanosheets. TM embedding restrains hydrogen evolution on the C sites, leaving more available sites for a CO2 decrease. The Langmuir adsorption model with ONIOM using CAM-B3LYP functional and LANL2DZ and 6-31+G (d,p) basis sets due to Gaussian 16 revision C.01 program on the complexes of CO2→(Fe, Ni, Zn) embedded on the GR was accomplished. The changes of charge density illustrated a more considerable charge transfer for Zn-embedded GR. The thermodynamic results from IR spectroscopy indicated that ΔGads,CO2Zn@CGRo has the notable gap of Gibbs free energy adsorption with a dipole moment which defines the alterations between the Gibbs free energy of the initial compounds (ΔGCO2 o and ΔGZn@CGRo) and product compound (ΔGCO2Zn@CGRo) through polarizability. Frontier molecular orbital and band energy gaps accompanying some chemical reactivity parameters represented the behavior of molecular electrical transport of the (Fe, Ni, Zn) embedding of GR for the adsorption of CO2 gas molecules. Our results have provided a favorable understanding of the interaction between TM-embedded graphene nanosheets and CO2. Full article
(This article belongs to the Special Issue Application of Porous Materials in CO2 Capture)
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Review

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24 pages, 6711 KiB  
Review
CO2-Selective Capture from Light Hydrocarbon Mixtures by Metal-Organic Frameworks: A Review
by Hengcong Huang, Luyao Wang, Xiaoyu Zhang, Hongshuo Zhao and Yifan Gu
Clean Technol. 2023, 5(1), 1-24; https://doi.org/10.3390/cleantechnol5010001 - 20 Dec 2022
Cited by 7 | Viewed by 4888
Abstract
CO2 represents a typical impurity in light hydrocarbon feedstocks, which affects the quality of subsequent chemical products. Owing to their highly similar nature, industrial separation requires large amounts of energy. Adsorptive gas separation based on porous materials is considered an efficient alternative, [...] Read more.
CO2 represents a typical impurity in light hydrocarbon feedstocks, which affects the quality of subsequent chemical products. Owing to their highly similar nature, industrial separation requires large amounts of energy. Adsorptive gas separation based on porous materials is considered an efficient alternative, as it can offer faster kinetics, higher selectivity, long-term stability and more energy-efficient regeneration. For the adsorption separation method, preferential CO2 capture from gas mixtures in one step is more energy-efficient for direct purification than light hydrocarbons, saving about 40% energy by eliminating energy-intensive post-regeneration processes such as countercurrent vacuum blowdown. Therefore, CO2-selective adsorbents are more sought-after than light hydrocarbon-selective adsorbents. Metal-organic frameworks (MOFs) have been demonstrated as outstanding physisorbents for CO2 capture due to their configurable channels for CO2 recognition, structural flexibility and large specific surface area. Many highly selective CO2 adsorption behaviors of MOFs have been reportedly achieved by precise modulation of pore size, pore chemistry or structural flexibility. In this review, we discuss the emerging development of MOFs for CO2-selective capture from different light hydrocarbon mixtures. The challenges of CO2 recognition and the strategies employed to achieve CO2 selectivity over light hydrocarbon mixtures by MOFs are summarized. In addition, the current challenges and prospects in the field of MOFs for CO2 capture are discussed and elaborated. Full article
(This article belongs to the Special Issue Application of Porous Materials in CO2 Capture)
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