Plasma Catalysis for CO2 Recycling

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Environmental Catalysis".

Deadline for manuscript submissions: closed (31 January 2023) | Viewed by 2554

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Institut d’Alembert, Sorbonne Université, CNRS UMR7190, 2 pl de la Gare de Ceinture, 78210 St Cyr L’Ecole, France
Interests: kinetics; catalysis; thermodynamics; fuels; catalytic process; catalytic pollution control processes; chemistry of combustion
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Department of Chemistry, University of Antwerp, Campus Drie Eiken – Room B2.09, Universiteitsplein 1, Wilrijk, BE-2610 Antwerp, Belgium
Interests: plasma and plasma–surface interactions by means of computer modeling and experiments, for various applications, with a major focus on green chemistry; plasma catalysis
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1. Instituto de Plasmas e Fusão Nuclear, Universidade de Lisboa, 1049-001 Lisboa, Portugal
2. Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
Interests: modeling of non-equilibrium kinetics of low-temperature molecular plasmas

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Faculty of Energy and Fuels, AGH University of Science and Technology, 30-059 Kraków, Poland
Interests: CO2 utilization; sequestration; waste gas treatment; catalysts; activated carbons; aluminosilicates; SCR; zeolites
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Faculty of Energy and Fuels, AGH University of Science and Technology, 30-059 Kraków, Poland
Interests: CO2 utilization; sequestration; waste gas treatment; catalysts; activated carbon; aluminosilicates; zeolites; DeNOx
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Energy transition and the use of alternative fuels, such as green hydrogen and green methane, is an important challenge nowadays. These issues are directly linked to the problem of global CO2 emissions. Recent European policy trends have focused on the possibility of utilizing carbon dioxide in chemical processes. The available installations that use CO2  produced as a waste gas are already being demonstrated. Nowadays, the most important challenge is to expand these installations up to larger scales to find economic and sustainable solutions.

One of these possible solutions is chemical reactions in which carbon dioxide can be used as a feedstock, such as methanation, methanolation, CO2 to chemicals, or the reforming of methane using CO2 (DRM). However, most of these processes are catalytic, meaning that they take place at high temperatures or pressures. Thus, the use of non-thermal plasmas in such processes can lead to a reduction in the energy used, making the process easier to carry out. Such reactions can be used for so-called energy storage.

Plasma–catalytic-assisted processes are very complex, both at the level of gas phase (or liquid phase) interactions and at the level of solid–gas phase (liquid phase) interactions. Key to these interactions are the activation processes of CO2 molecules, as well as the reaction centers of the catalyst, which in a traditional reaction are created under high temperatures.

In the pioneering Special Issue, all of these aspects related to the fields of physics, material science, catalysis, chemistry and the chemical engineering of plasma–catalytic processes will be presented.

Prof. Dr. Patrick Da Costa
Prof. Dr. Annemie Bogaerts
Dr. Vasco Guerra
Prof. Dr. Monika Motak
Dr. Bogdan Samojeden
Guest Editors

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Keywords

  • plasma
  • reduction in CO2 emissions
  • catalysis
  • chemical engineering
  • methanol
  • H2
  • CH4

Published Papers (1 paper)

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Research

17 pages, 4599 KiB  
Article
Thermal and Plasma-Assisted CO2 Methanation over Ru/Zeolite: A Mechanistic Study Using In-Situ Operando FTIR
by Domenico Aceto, Maria Carmen Bacariza, Arnaud Travert, Carlos Henriques and Federico Azzolina-Jury
Catalysts 2023, 13(3), 481; https://doi.org/10.3390/catal13030481 - 27 Feb 2023
Cited by 1 | Viewed by 1910
Abstract
CO2 methanation is an attractive reaction to convert CO2 into a widespread fuel such as methane, being the combination of catalysts and a dielectric barrier discharge (DBD) plasma responsible for synergistic effects on the catalyst’s performances. In this work, a Ru-based [...] Read more.
CO2 methanation is an attractive reaction to convert CO2 into a widespread fuel such as methane, being the combination of catalysts and a dielectric barrier discharge (DBD) plasma responsible for synergistic effects on the catalyst’s performances. In this work, a Ru-based zeolite catalyst, 3Ru/CsUSY, was synthesized by incipient wetness impregnation and characterized by TGA, XRD, H2-TPR, N2 sorption and CO2-TPD. Catalysts were tested under thermal and plasma-assisted CO2 methanation conditions using in-situ operando FTIR, with the aim of comparing the mechanism under both types of catalysis. The incorporation of Ru over the CsUSY zeolite used as support induced a decrease of the textural properties and an increase of the basicity and hydrophobicity, while no zeolite structural damage was observed. Under thermal conditions, a maximum CO2 conversion of 72% and CH4 selectivity above 95% were registered. These promising results were ascribed to the presence of small Ru0 nanoparticles over the support (16 nm), catalyst surface hydrophobicity and the presence of medium-strength basic sites in the catalyst. Under plasma-catalytic conditions, barely studied in similar setups in literature, CO2 was found to be excited by the plasma, facilitating its adsorption on the surface of 3Ru/CsUSY in the form of oxidized carbon species such as formates, aldehydes, carbonates, or carbonyls, which are afterwards progressively hydrogenated to methane. Adsorption and surface reaction of key intermediates, namely formate and aldehydic groups, was observed even on the support alone, an occurrence not reported before for thermal catalysis. Overall, similar reaction mechanisms were proposed for both thermal and plasma-catalysis conditions. Full article
(This article belongs to the Special Issue Plasma Catalysis for CO2 Recycling)
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