New Trends in Catalytic Conversion of Carbon Dioxide

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

Deadline for manuscript submissions: closed (30 June 2021) | Viewed by 16367

Special Issue Editors

Environmental Engineering Department, University of Calabria, 87036 Rende, CS, Italy
Interests: heterogeneous catalysis; synthesis and characterization of nanostructured materials; biodiesels and biofuels production; carbon oxides conversion; syngas production; methanation reactions
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Special Issue Information

Dear Colleagues, 

Decreasing of carbon dioxide emissions represents, today, a pressing challenge to limit its negative effects on the world climate change.

Replacement of part of the fossil fuel consumption by renewable energy is a fundamental strategy to increase resource and energy efficiency.

The conversion of CO2 into valuable chemicals, using also renewable energy, represents an interesting solution to reach, simultaneously, the above-mentioned objectives.

The aim of this Special Issue is to focus on the state-of-the-art, perspectives and targets to be developed in the CO2 conversion to chemical and energy value products.

Articles, reviews or short-reviews regarding carbon dioxide conversion to syngas, methanol, formic acid, dimethyl ether, hydrocarbons by Fischer-Tropsch reaction and methane, or regarding production of short-chain olefins (ethylene, propylene) by CO2 consumption, are of great interest to this Special Issue.

Moreover, the relevance of H2 production using renewable energies and its consumption in the CO2 conversion reactions is also an important focus of the Special Issue. In this view, works that outline on the current status of Power-To-Gas technology as smart recycling of carbon dioxide are welcome for publication in this Special Issue.

The submitted manuscripts can cover different aspects, including the state of the art and design of catalysts and related considerations about the reaction mechanisms: all critically evaluated to give the insight into each reaction.

Prof. Dr. Anastasia Macario
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Catalysts is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • CO2 conversion
  • methanation
  • syngas
  • methanol
  • dimethyl ether
  • olefins
  • Fischer-Tropsch reaction
  • Power-to-Gas technology

Published Papers (2 papers)

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Research

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18 pages, 1292 KiB  
Article
Ex-LDH-Based Catalysts for CO2 Conversion to Methanol and Dimethyl Ether
by Mauro Mureddu, Sarah Lai, Luciano Atzori, Elisabetta Rombi, Francesca Ferrara, Alberto Pettinau and Maria Giorgia Cutrufello
Catalysts 2021, 11(5), 615; https://0-doi-org.brum.beds.ac.uk/10.3390/catal11050615 - 11 May 2021
Cited by 16 | Viewed by 2967
Abstract
CO2-derived methanol and dimethyl ether can play a very important role as fuels, energy carriers, and bulk chemicals. Methanol production from CO2 and renewable hydrogen is considered to be one of the most promising pathways to alleviate global warming. In [...] Read more.
CO2-derived methanol and dimethyl ether can play a very important role as fuels, energy carriers, and bulk chemicals. Methanol production from CO2 and renewable hydrogen is considered to be one of the most promising pathways to alleviate global warming. In turn, methanol could be subsequently dehydrated into DME; alternatively, one-step CO2 conversion to DME can be obtained by hydrogenation on bifunctional catalysts. In this light, four oxide catalysts with the same Cu and Zn content (Cu/Zn molar ratio = 2) were synthesized by calcining the corresponding CuZnAl LDH systems modified with Zr and/or Ce. The fresh ex-LDH catalysts were characterized in terms of composition, texture, structure, surface acidity and basicity, and reducibility. Structural and acid–base properties were also studied on H2-treated samples, on which specific metal surface area and dispersion of metallic Cu were determined as well. After in situ H2 treatment, the ex-LDH systems were tested as catalysts for the hydrogenation of CO2 to methanol at 250 °C and 3.0 MPa. In the same experimental conditions, CO2 conversion into dimethyl ether was studied on bifunctional catalysts obtained by physically mixing the ex-LDH hydrogenation catalysts with acid ferrierite or ZSM-5 zeolites. For both processes, the effect of the Al/Zr/Ce ratio on the products distribution was investigated. Full article
(This article belongs to the Special Issue New Trends in Catalytic Conversion of Carbon Dioxide)
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Review

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17 pages, 2540 KiB  
Review
Recovery/Reuse of Heterogeneous Supported Spent Catalysts
by Mariachiara Miceli, Patrizia Frontera, Anastasia Macario and Angela Malara
Catalysts 2021, 11(5), 591; https://0-doi-org.brum.beds.ac.uk/10.3390/catal11050591 - 01 May 2021
Cited by 105 | Viewed by 12808
Abstract
The rapid separation and efficient recycling of catalysts after a catalytic reaction are considered important requirements along with the high catalytic performances. In this view, although heterogeneous catalysis is generally less efficient if compared to the homogeneous type, it is generally preferred since [...] Read more.
The rapid separation and efficient recycling of catalysts after a catalytic reaction are considered important requirements along with the high catalytic performances. In this view, although heterogeneous catalysis is generally less efficient if compared to the homogeneous type, it is generally preferred since it benefits from the easy recovery of the catalyst. Recycling of heterogeneous catalysts using traditional methods of separation such as extraction, filtration, vacuum distillation, or centrifugation is tedious and time-consuming. They are uneconomic processes and, hence, they cannot be carried out in the industrial scale. For these limitations, today, the research is devoted to the development of new methods that allow a good separation and recycling of catalysts. The separation process should follow a procedure economically and technically feasible with a minimal loss of the solid catalyst. The aim of this work is to provide an overview about the current trends in the methods of separation/recycling used in the heterogeneous catalysis. Full article
(This article belongs to the Special Issue New Trends in Catalytic Conversion of Carbon Dioxide)
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