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Innovation in Adsorption Processes and Materials for CO2 Capture

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Porous Materials".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 7110

Special Issue Editors


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Guest Editor
Institute of Sciences and Technologies for Sustainable Energy and Mobility (STEMS)-CNR, 80-80125 Napoli, Italy
Interests: CO2 capture and storage (CCS); CO2 adsorption; temperature swing adsorption; thermochemical energy storage; fluidization; fine/ultra-fine cohesive particles
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Special Issue Information

Dear Colleagues,

This is a call for papers for a Special Issue on “Innovation in Adsorption Processes and Materials for CO2 Capture”. One of the most promising alternatives to reduce the increasing amount of CO2 released into the atmosphere and its negative impact on global climate change is represented by CO2 capture and storage (CCS), consisting in the separation of CO2 from large industrial and energy-related sources, transport to a storage location, and long-term isolation from the atmosphere. The main explanation for the slow deployment of fully integrated commercial CCS schemes is the considerable cost of the capture phase, which approximately represents two thirds of the total cost of the whole process. In this framework, adsorption using solid sorbents has been recognized to have the potential to reduce the cost of the capture process compared to amine scrubbing, due to its low regeneration energy consumption, selectivity, easiness in handling, and applicability over a relatively wide range of operating temperatures.

In this context, the choice of the adsorbent material represents a critical point for the success of this approach. Indeed, the sorbent should combine low cost with versatility and good performances, such as high adsorption capacity, fast adsorption/desorption rates, and good stability to repeated adsorption/desorption cycles. Likewise, the selection and set up of a proper adsorption/regeneration process (temperature swing adsorption, pressure swing adsorption, etc.) is also crucial to fully exploit the potential of the selected sorbent.

Therefore, the development of innovative adsorption materials and processes for CO2 capture are essential in this perspective. The topics that would be covered in this Special Issue include but are not limited to the synthesis, characterization, and application of novel and advanced solid sorbent materials and systems for CO2 capture by adsorption. Articles focusing on the environmental aspects related to CO2 adsorption or life cycle analysis will also be welcome.

Dr. Federica Raganati
Dr. Paola Ammendola
Guest Editors

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Keywords

  • CO2 adsorption
  • Temperature swing adsorption (TSA)
  • Pressure swing adsorption (PSA)
  • Vacuum swing adsorption (VSA)
  • Carbon-based sorbents
  • Amine-based sorbents
  • Zeolite-based sorbents
  • Polymer-based sorbents

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Published Papers (2 papers)

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Research

13 pages, 4609 KiB  
Article
In Situ Regeneration of Copper-Coated Gas Diffusion Electrodes for Electroreduction of CO2 to Ethylene
by Magdalena Bisztyga-Szklarz, Krzysztof Mech, Mateusz Marzec, Robert Kalendarev and Konrad Szaciłowski
Materials 2021, 14(12), 3171; https://doi.org/10.3390/ma14123171 - 9 Jun 2021
Cited by 7 | Viewed by 3065
Abstract
A key challenge for carbon dioxide reduction on Cu-based catalysts is its low faradic efficiency (FE) and selectivity towards higher-value products, e.g., ethylene. The main factor limiting the possibilities of long-term applications of Cu-based gas diffusion electrodes (GDE) is a relatively fast drop [...] Read more.
A key challenge for carbon dioxide reduction on Cu-based catalysts is its low faradic efficiency (FE) and selectivity towards higher-value products, e.g., ethylene. The main factor limiting the possibilities of long-term applications of Cu-based gas diffusion electrodes (GDE) is a relatively fast drop in the catalytic activity of copper layers. One of the solutions to the catalyst stability problem may be an in situ reconstruction of the catalyst during the process. It was observed that the addition of a small amount of copper lactate to the electrolyte results in increased Faradaic efficiency for ethylene formation. Moreover, the addition of copper lactate increases the lifetime of the catalytic layer ca. two times and stabilizes the Faradaic efficiency of the electroreduction of CO2 to ethylene at ca. 30%. It can be concluded that in situ deposition of copper through reduction of copper lactate complexes present in the electrolyte provides new, stable, and selective active sites, promoting the reduction of CO2 to ethylene. Full article
(This article belongs to the Special Issue Innovation in Adsorption Processes and Materials for CO2 Capture)
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13 pages, 3400 KiB  
Article
Synthesis and Use of Valsartan Metal Complexes as Media for Carbon Dioxide Storage
by Alaa Mohammed, Emad Yousif and Gamal A. El-Hiti
Materials 2020, 13(5), 1183; https://doi.org/10.3390/ma13051183 - 6 Mar 2020
Cited by 15 | Viewed by 2863
Abstract
To address global warming through carbon dioxide storage, three valsartan metal complexes were synthesized in excellent yields (87–92%) through a reaction of the appropriate metal chloride (tin chloride, nickel chloride hexahydrate, or magnesium chloride hexahydrate) and excess valsartan (two mole equivalents) in boiling [...] Read more.
To address global warming through carbon dioxide storage, three valsartan metal complexes were synthesized in excellent yields (87–92%) through a reaction of the appropriate metal chloride (tin chloride, nickel chloride hexahydrate, or magnesium chloride hexahydrate) and excess valsartan (two mole equivalents) in boiling methanol for 3 h. The structures of the metal complexes were established based on the data obtained from ultraviolet-visible, Fourier transform infrared, and proton nuclear magnetic resonance spectra, as well as from elemental analysis, energy-dispersive X-ray spectra, and magnetic susceptibility. The agglomeration and shape of the particles were determined using field emission scanning electron microscopy analysis. The surface area (16.63–22.75 m2/g) of the metal complexes was measured using the Brunauer-Emmett-Teller method, whereas the Barrett-Joyner-Halenda method was used to determine the particle pore size (0.011–0.108 cm3/g), total average pore volume (6.50–12.46 nm), and pore diameter (6.50–12.47 nm), for the metal complexes. The carbon dioxide uptake of the synthesized complexes, at 323 K and 4 MPa (40 bar), ranged from 24.11 to 34.51 cm2/g, and the nickel complex was found to be the most effective sorbent for carbon dioxide storage. Full article
(This article belongs to the Special Issue Innovation in Adsorption Processes and Materials for CO2 Capture)
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