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Journals
Catalysts
Special Issues
Catalytic Transformations of CO2 into High Valuable Products
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Catalytic Transformations of CO2 into High Valuable Products

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

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 7819

Special Issue Editors

Dr. Mónica Viciano

E-Mail Website
Guest Editor
Decarbonization Department, AIMPLAS, 46980 Paterna, Spain
Interests: CO2 transformations; homogeneous and heterogeneous catalysts synthesis; organometallic chemistry; polymers from CO2; homogeneous catalysis; cicloadition of CO2; NHCs carbenes catalysts; C-H activation
Dr. Sergio Sopeña de Frutos

E-Mail Website
Guest Editor
Institute of Chemical Research of Catalonia – ICIQ, Avinguda dels Països Catalans 16, 43007 Tarragona, Spain
Interests: CO2 utilisation and CO2 valorisation; limonene; polycarbonates; methanation reaction; cyclic carbonates; biogas; non-isocyanate polyurethanes
Dr. Carolina Blanco

E-Mail Website
Guest Editor
Department of Chemistry, National University of Colombia, Bogota 111321, Colombia
Interests: CO2 transformations; CO2 uses; organometallic catalysts

Special Issue Information

Dear Colleagues,

The use of carbon dioxide as feedstock in new processes has been ideally proposed as an alternative route for producing chemicals. The use of carbon dioxide as feedstock to produce chemicals, such as cyclic organic carbonates, polymers or fuels, is among the largest opportunities for the use of CO2 in industrial chemistry. Carbonates have great industrial potential as sustainable and environmentally benign solvents and reagents. The new route to obtaining polymers from CO2 avoids phosgene, which is toxic.

The use of carbon dioxide as a raw material has driven different processes of particular interests in which carbon dioxide is used as starting materials for the synthesis of fine chemicals (carbonates, carboxylic acids, etc.), new polymeric materials (poly-alkylene carbonates, urethanes, etc.) or fuels, such as methanol. Some catalysts have been described to be active in obtaining polymers, but catalyst selectivity and yield for obtaining polymers have so far been only available for industrial uses due to the stability of the catalytic system.

However, there are still some problems that need to be solved:

  • The design of cheap, non-toxic and high active catalysts to obtain these valuable products from CO2;
  • The use of new reactors (non-thermal plasma, magnetic induction and microwave) to reach good activities using novel catalyst to obtain fuels;
  • The obtention of high molecular weight polymers from CO2;
  • New solvents from CO2 to be used as electrolytes in Li-ion batteries.

This Special Issue aims to highlight CO2 conversion by using novel catalysts in valuable products such as fuels, polymers or organic molecules using a wide range of catalytic systems (homogeneous and heterogeneous) including organometallic, organic and inorganic materials.

Dr. Mónica Viciano
Dr. Sergio Sopeña de Frutos
Dr. Carolina Blanco
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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 transformations
  • organometallic catalyst
  • heterogeneous catalysts
  • catalysis
  • cyclic carbonates
  • polymers from CO2
  • CO2 activation
  • organocatalysis
  • polyurethanes
  • non-phosgene
  • non-isocyanate

Published Papers (4 papers)

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Research

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13 pages, 27603 KiB  
Article
Size Effect of Cu Particles on Interface Formation in Cu/ZnO Catalysts for Methanol Synthesis
by Lirong Zhao, Lunjia Zhang, Zhaoxuan Wu, Chaojie Huang, Kuncheng Chen, Hui Wang and Fan Yang
Catalysts 2023, 13(8), 1190; https://0-doi-org.brum.beds.ac.uk/10.3390/catal13081190 - 08 Aug 2023
Cited by 1 | Viewed by 1118
Abstract
Cu/ZnO/Al2O3 catalysts are extensively utilized in methanol synthesis from CO and CO2, which is a vital industrial process and a promising strategy for mitigating CO2 emissions when renewable green hydrogen is employed. Despite the considerable efforts to [...] Read more.
Cu/ZnO/Al2O3 catalysts are extensively utilized in methanol synthesis from CO and CO2, which is a vital industrial process and a promising strategy for mitigating CO2 emissions when renewable green hydrogen is employed. Despite the considerable efforts to study CO2 hydrogenation over Cu/ZnO, understanding the structure of active sites on Cu/ZnO has remained a major challenge. We studied a series of Cu/ZnO catalysts with various Cu particle sizes and found a volcano-like pattern in methanol selectivity with respect to the Cu particle size. TEM, XPS, and TPD measurements demonstrated the migration of ZnOx species onto the Cu particle surface and showed a correlation between the ZnOx-Cu interface and methanol yield. The size of supported Cu particles affects the migration of Zn species onto Cu particle surfaces. Our study has thus explicated the role of the ZnOx-Cu interface in catalyzing CO2 hydrogenation to methanol. Full article
(This article belongs to the Special Issue Catalytic Transformations of CO2 into High Valuable Products)
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16 pages, 2470 KiB  
Article
New Co and Mn Catalysts Bearing ONO Ligands Containing Nucleophile for the Coupling of CO2 and Propylene Oxide
by Mónica Viciano, Bianca K. Muñoz, Ennio Zangrando, Cyril Godard, Sergio Castillón, Mª Dolores Blanco González, Mónica García-Ruíz and Carmen Claver
Catalysts 2022, 12(11), 1443; https://0-doi-org.brum.beds.ac.uk/10.3390/catal12111443 - 15 Nov 2022
Viewed by 1430
Abstract
A series of novel ONO ligands bearing an ionic pendant-armed (hereinafter indicated as ONONu, where Nu corresponds to an anionic nucleophile) were synthesized, characterized, and successfully coordinated to cobalt and manganese precursors. New air-stable cobalt (III) complexes (1–6) and [...] Read more.
A series of novel ONO ligands bearing an ionic pendant-armed (hereinafter indicated as ONONu, where Nu corresponds to an anionic nucleophile) were synthesized, characterized, and successfully coordinated to cobalt and manganese precursors. New air-stable cobalt (III) complexes (1–6) and manganese (II) complexes (7 and 8) were obtained and characterized. Single crystal X-ray diffraction analysis of the Co(III) compound 5 confirmed the presence of two quaternized ligands coordinated to the metal and iodide as counterion. These novel complexes were revealed to be active catalysts in the coupling reaction of carbon dioxide and propylene oxide (PO) in different degrees of success. Among these, the manganese complex 8 afforded the best results towards the formation of propylene carbonate (PC) with a productivity of 256 kg PC/(kg cat·h), achieving a TON of 4860. Full article
(This article belongs to the Special Issue Catalytic Transformations of CO2 into High Valuable Products)
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13 pages, 5525 KiB  
Article
CeO2-ZrO2 Solid Solution Catalyzed and Moderate Acidic–Basic Sites Dominated Cycloaddition of CO2 with Epoxides: Halogen-Free Synthesis of Cyclic Carbonates
by Jie Gao, Chengguang Yue, Hao Wang, Jiaxin Li, He Yao, Mei-Yan Wang and Xinbin Ma
Catalysts 2022, 12(6), 632; https://0-doi-org.brum.beds.ac.uk/10.3390/catal12060632 - 09 Jun 2022
Cited by 4 | Viewed by 2174
Abstract
For the production of cyclic carbonates from the cycloaddition of CO2 with epoxides, halogen pollution and product purity are two of the most common problems due to the usage of homogeneous halogen-containing catalysts such as ammonium salt and alkali metal halide. Hence, [...] Read more.
For the production of cyclic carbonates from the cycloaddition of CO2 with epoxides, halogen pollution and product purity are two of the most common problems due to the usage of homogeneous halogen-containing catalysts such as ammonium salt and alkali metal halide. Hence, the development of a novel, halogen-free and efficient catalyst for the synthesis of high-purity cyclic carbonates is significant. Here, a series of acid–base bifunctional Ce1-xZrxO2 nanorods were successfully prepared. The Ce1-xZrxO2 nanorods could catalyze the cycloaddition of CO2 with epoxides efficiently without any halogen addition. Especially for the Ce0.7Zr0.3O2 catalyst, a conversion of 96% with 100% 1,2-butylene carbonate selectivity was achieved. The excellent catalytic performance of Ce1-xZrxO2 nanorods is attributed to the formation of the CeO2-ZrO2 solid solution, which contributes to abundant moderate acidic–basic active sites on the catalyst surface. It is the synergistic effect of moderate acidic–basic sites that dominates the conversion of CO2 with epoxides, which will supply important references for the synthesis of efficient metal oxide catalyst for the cycloaddition of CO2 with epoxides. Full article
(This article belongs to the Special Issue Catalytic Transformations of CO2 into High Valuable Products)
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Review

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42 pages, 6075 KiB  
Review
A Review on Green Hydrogen Valorization by Heterogeneous Catalytic Hydrogenation of Captured CO2 into Value-Added Products
by Rafael Estevez, Laura Aguado-Deblas, Felipa M. Bautista, Francisco J. López-Tenllado, Antonio A. Romero and Diego Luna
Catalysts 2022, 12(12), 1555; https://0-doi-org.brum.beds.ac.uk/10.3390/catal12121555 - 01 Dec 2022
Cited by 3 | Viewed by 2226
Abstract
The catalytic hydrogenation of captured CO2 by different industrial processes allows obtaining liquid biofuels and some chemical products that not only present the interest of being obtained from a very low-cost raw material (CO2) that indeed constitutes an environmental pollution [...] Read more.
The catalytic hydrogenation of captured CO2 by different industrial processes allows obtaining liquid biofuels and some chemical products that not only present the interest of being obtained from a very low-cost raw material (CO2) that indeed constitutes an environmental pollution problem but also constitute an energy vector, which can facilitate the storage and transport of very diverse renewable energies. Thus, the combined use of green H2 and captured CO2 to obtain chemical products and biofuels has become attractive for different processes such as power-to-liquids (P2L) and power-to-gas (P2G), which use any renewable power to convert carbon dioxide and water into value-added, synthetic renewable E-fuels and renewable platform molecules, also contributing in an important way to CO2 mitigation. In this regard, there has been an extraordinary increase in the study of supported metal catalysts capable of converting CO2 into synthetic natural gas, according to the Sabatier reaction, or in dimethyl ether, as in power-to-gas processes, as well as in liquid hydrocarbons by the Fischer-Tropsch process, and especially in producing methanol by P2L processes. As a result, the current review aims to provide an overall picture of the most recent research, focusing on the last five years, when research in this field has increased dramatically. Full article
(This article belongs to the Special Issue Catalytic Transformations of CO2 into High Valuable Products)
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