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CO2 Capture and/or Its Catalytic Transformation into Fuels or...
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CO2 Capture and/or Its Catalytic Transformation into Fuels or Valuable Chemicals II

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

Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 7850

Special Issue Editors

Dr. Benoît Louis

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Guest Editor
Directeur de recherches CNRS, ICPEES - Institut de Chimie et Procédés pour l'Énergie, l'Environnement et la Santé, Energy and Fuels for a Sustainable Environment Team, UMR 7515 CNRS - Université de Strasbourg - ECPM, 25 Rue Becquerel, CEDEX 2, F-67087 Strasbourg, France
Interests: acid catalysis; CO2 capture; sustainable fuels; catalysis; zeolites
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Marcelo Maciel Pereira

E-Mail Website
Guest Editor
Departamento de Química Inorgânica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, BR, Brazil
Interests: catalysis; zeolites; biomass; CO2; green-products
Special Issues, Collections and Topics in MDPI journals
Dr. Qianwen Zheng

E-Mail Website
Guest Editor
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
Interests: heterogeneous catalysis; petrochemistry; CO2 capture and utilization
Dr. Nicholas Musyoka

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Guest Editor
Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa
Interests: CO2 conversion; CO2 capture/storage; CO2 hydrogenation; H2 storage

Special Issue Information

Dear Colleagues,

Over the last century, life expectancy has doubled, and most human-related activities have dramatically improved with respect to security and comfort. Unfortunately, despite the enormous benefits, industrial production schemes and consumption patterns are mostly based on non-recycled energy sources. Additionally, less than 0.1% of CO2 produced by anthropogenic means is currently recycled or mitigated.

The ever-increasing CO2 concentration in the atmosphere, leading to global warming, is one of the main problems that humankind has to face during the 21st century. To avoid the fact that sooner or later, humanity will directly start to suffer from it, there is an urgent need to reduce this CO2 level through its capture at the main sources of emissions, such as coal-fired power plants, and even better, to try to sequestrate it directly from the atmosphere.

In addition to CO2 capture, it is now mandatory to design efficient catalysts to set new processes for its chemical valorization into either fuels (methane, methanol, dimethyl ether) or key building blocks such as olefins, aromatics, epoxides, carbonates, etc.

This Special Issue is devoted to presenting the central catalytic role of the aforementioned topics, for example:

  • CO2 capture, separation, and post-treatment to its sequential uses;
  • CO2 platform-based chemistry (CO2 used as a reactant);
  • Uses of CO2 integrated into processes to afford green products such as formic acid, CO, methanol, methane, cyclic carbonates, and hydrogen;
  • Reduction in gas emissions related to CO2 mitigation processes (NOx and SOx).

Dr. Benoît Louis
Prof. Dr. Marcelo Maciel Pereira 
Dr. Qianwen Zheng
Dr. Nicholas Musyoka
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 2200 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 capture 
  • CO2 conversion 
  • solid sorbents 
  • methanation 
  • heterogeneous catalysis 
  • mitigation of greenhouse gases

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Published Papers (3 papers)

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Research

13 pages, 6826 KiB  
Article
The Evolution of Hexagonal Cobalt Nanosheets for CO2 Electrochemical Reduction Reaction
by Qingyu Li, Yichao Hou, Jie Yin and Pinxian Xi
Catalysts 2023, 13(10), 1384; https://doi.org/10.3390/catal13101384 - 21 Oct 2023
Cited by 4 | Viewed by 1848
Abstract
The CO2 electrochemical reduction reaction (CO2RR) is one of the most promising methods to reduce carbon dioxide emissions and store energy. At the same time, the pathways of CO2 reduction reaction are diverse and the products are abundant. Converting [...] Read more.
The CO2 electrochemical reduction reaction (CO2RR) is one of the most promising methods to reduce carbon dioxide emissions and store energy. At the same time, the pathways of CO2 reduction reaction are diverse and the products are abundant. Converting carbon dioxide to C2+ products, a critical feedstock, requires a C–C coupling step with the transfer of more than 10 electrons per molecule and, hence, is kinetically sluggish. The production of some key adsorptions is conducive to the formation of C2+ products. In this work, we used in situ techniques to figure out the reason why hexagonal-close-packed (hcp) Co nanosheets (NSs) have high activity in CO2RR to ethanal. According to the in situ Raman spectra, the high local pH environment on the catalyst surface is favorable for CO2RR. The high pH at low potentials not only suppresses the competing hydrogen evolution reaction but also stimulates the production of COCO* intermediate. The isotopic labeling experiment in differential electrochemical mass spectrometry (DEMS) provides a possible sequence of the products. The 13CO is generated when we replace 12CO2 with 13CO2, which identifies the origin of the products. Besides, in situ electrochemical impedance spectroscopy (EIS) shows that the hcp Co at −0.4 V vs. RHE boosts the H2O dissociation and proton transfer, feeding sufficient H* for CO2 to *COOH. In the end, by analyzing the transmission electronic microscopy (TEM), we find that the Co (002) plane may be beneficial to the conversion of CO2 and the adsorption of intermediates. Full article
(This article belongs to the Special Issue CO2 Capture and/or Its Catalytic Transformation into Fuels or Valuable Chemicals II)
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13 pages, 2073 KiB  
Article
Enhanced CuAl2O4 Catalytic Activity via Alkalinization Treatment toward High CO2 Conversion during Reverse Water Gas Shift Reaction
by Mian Hu, Hongyu Hu, Suqin Tang and Zhiyan Pan
Catalysts 2022, 12(12), 1511; https://doi.org/10.3390/catal12121511 - 25 Nov 2022
Cited by 10 | Viewed by 2228
Abstract
CO2 catalytic conversion to CO would likely be an important part of CO2 mitigation and utilization. In this work, CuAl2O4 was developed with a spinel structure that acts as an active and stable catalyst for this reaction. Here, [...] Read more.
CO2 catalytic conversion to CO would likely be an important part of CO2 mitigation and utilization. In this work, CuAl2O4 was developed with a spinel structure that acts as an active and stable catalyst for this reaction. Here, the fundamental characteristics of CuAl2O4 catalyst were studied to understand the catalytic mechanism for the Reverse Water Gas Shift reaction. Based on the catalytic mechanism, the CuAl2O4 catalyst was found to have exceptional catalytic activity due to the high dispersion of copper on its surface, and it could have higher catalytic activity by increasing the oxygen vacancies on the surface of the catalyst via alkalinization treatment. By combining with XPS spectra, the relationship between the Raman mode and the oxygen vacancy structure on the CuAl2O4 surface was proved. Through these studies, it was proved that alkalinization treatment can regulate the oxygen vacancies on the surface of the catalyst and thus enhance the catalytic activity. Full article
(This article belongs to the Special Issue CO2 Capture and/or Its Catalytic Transformation into Fuels or Valuable Chemicals II)
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14 pages, 2536 KiB  
Article
Towards High CO2 Conversions Using Cu/Zn Catalysts Supported on Aluminum Fumarate Metal-Organic Framework for Methanol Synthesis
by Zama G. Duma, John Moma, Henrietta W. Langmi, Benoit Louis, Ksenia Parkhomenko and Nicholas M. Musyoka
Catalysts 2022, 12(10), 1104; https://doi.org/10.3390/catal12101104 - 24 Sep 2022
Cited by 14 | Viewed by 3038
Abstract
Green methanol is a viable alternative for the storage of hydrogen and may be produced from captured anthropogenic sources of carbon dioxide. The latter was hydrogenated over Cu-ZnO catalysts supported on an aluminum fumarate metal-organic framework (AlFum MOF). The catalysts, prepared via slurry [...] Read more.
Green methanol is a viable alternative for the storage of hydrogen and may be produced from captured anthropogenic sources of carbon dioxide. The latter was hydrogenated over Cu-ZnO catalysts supported on an aluminum fumarate metal-organic framework (AlFum MOF). The catalysts, prepared via slurry phase impregnation, were assessed for thermocatalytic hydrogenation of CO2 to methanol. PXRD, FTIR, and SBET exhibited a decrease in crystallinity of the AlFum MOF support after impregnation with Cu-Zn active sites. SEM, SEM-EDS, and TEM revealed that the morphology of the support is preserved after metal loading, where H2-TPR confirmed the presence of active sites for hydrogen uptake. The catalysts exhibited good activity, with a doubling in Cu and Zn loading over the AlFum MOF, resulting in a 4-fold increase in CO2 conversions from 10.8% to 45.6% and an increase in methanol productivity from 34.4 to 56.5 gMeOH/Kgcat/h. The catalysts exhibited comparatively high CO selectivity and high yields of H2O, thereby favoring the reverse water-gas shift reaction. The selectivity of the catalysts towards methanol was found to be 12.9% and 6.9%. The performance of the catalyst supported on AlFum MOF further highlights the potential use of MOFs as supports in the heterogeneous thermocatalytic conversion of CO2 to value-added products. Full article
(This article belongs to the Special Issue CO2 Capture and/or Its Catalytic Transformation into Fuels or Valuable Chemicals II)
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