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Methane Dry Reforming
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Methane Dry Reforming

A special issue of Methane (ISSN 2674-0389).

Deadline for manuscript submissions: 30 November 2024 | Viewed by 8503

Special Issue Editors

Prof. Dr. Brian A. Rosen

E-Mail Website
Guest Editor
Department of Materials Science and Engineering, Tel Aviv University, 55 Haim Levanon Street, Ramat Aviv 6139001, Israel
Interests: fuel reforming; electrochemistry; materials science; ceramics
Prof. Dr. Oz M. Gazit

E-Mail Website
Guest Editor
Faculty of Chemical Engineering, Technion—Israel Institute of Technology, Haifa 3200003, Israel
Interests: alkane reformation and oxidation; biomass upgrading; synthesis of advanced active materials

Special Issue Information

Dear Colleagues,

The dry reformation of methane has regained significant interest in the last 10 years owing to breakthroughs in the development of catalysts resistant to coking. The large-scale implementation of such novel catalysts is being considered by some of the largest energy companies in the world, while academic efforts continue to gain better understanding of this reaction. In this Special Issue, we invite papers focused on (but not limited to) the following topics:

  1. Synthesis of novel dry reformation catalysts;
  2. Kinetic studies of existing or novel dry reformation catalysts;
  3. Degradation studies of existing or novel dry reformation catalysts;
  4. Innovative dry reformation reactor design and operation;
  5. Implementation of mixed (dry + steam) reformation catalysts or their reactors;
  6. Computational and theoretical studies on materials for dry reformation catalysts or their reactors;
  7. Techno-economic studies on dry reformation, particularly comparisons to alternative methane oxidation reactions (e.g., SRM, PO, OCM, etc.);
  8. Heat and mass transfer processes in dry reformation reactions;
  9. Role of plasmas in assisting dry reformation;
  10. Other important topics in methane dry reformation.

Prof. Dr. Brian A. Rosen
Prof. Dr. Oz M. Gazit
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. Methane is an international peer-reviewed open access quarterly 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 1000 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

  • coke-resistant catalysts
  • reaction kinetics
  • methane oxidation
  • materials charac-terization

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Published Papers (4 papers)

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Research

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18 pages, 14118 KiB  
Article
Dry Reforming of Methane over Li-Doped Ni/TiO2 Catalysts: Effect of Support Basicity
by Vicente Pérez-Madrigal, Edna Ríos-Valdovinos, Elizabeth Rojas-García, Miguel A. Valenzuela and Francisco Pola-Albores
Methane 2023, 2(4), 452-469; https://doi.org/10.3390/methane2040031 - 15 Dec 2023
Cited by 1 | Viewed by 1210
Abstract
In this research, we investigate the impact of Li doping on a TiO2 support, synthesized through the sol-gel method, with a focus on varying the aging time. Our objective is to elucidate how aging duration and doping influence the surface basicity, thereby [...] Read more.
In this research, we investigate the impact of Li doping on a TiO2 support, synthesized through the sol-gel method, with a focus on varying the aging time. Our objective is to elucidate how aging duration and doping influence the surface basicity, thereby mitigating carbon formation and amplifying the catalytic efficacy of Ni-loaded catalysts (15 wt.%). Essential characterization techniques encompass X-ray diffraction, H2-TPR, FE-SEM, N2-physisorption, DLS, FTIR, and Raman spectroscopies. Our findings reveal that extended aging periods promote the development of a basic character, attributable to oxygen defects within TiO2. This inherent trait bears significant implications for catalyst performance, stability, and carbon formation during the reaction. Remarkably, the catalyst with the highest catalytic activity and stability boasts an 85% relative basicity, a property also induced by incorporating lithium into the TiO2 support. Full article
(This article belongs to the Special Issue Methane Dry Reforming)
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15 pages, 4446 KiB  
Article
Autothermal Reforming of Methane: A Thermodynamic Study on the Use of Air and Pure Oxygen as Oxidizing Agents in Isothermal and Adiabatic Systems
by Matheus Henrique Silva Cavalcante, Ícaro Augusto Maccari Zelioli, Emílio Émerson Xavier Guimarães Filho, Julles Mitoura dos Santos Júnior, Annamaria Dória Souza Vidotti, Antonio Carlos Daltro de Freitas and Reginaldo Guirardello
Methane 2023, 2(4), 389-403; https://doi.org/10.3390/methane2040026 - 8 Oct 2023
Cited by 2 | Viewed by 3154
Abstract
In this paper, we analyze the autothermal reforming (ATR) of methane through Gibbs energy minimization and entropy maximization methods to analyze isothermic and adiabatic systems, respectively. The software GAMS® 23.9 and the CONOPT3 solver were used to conduct the simulations and thermodynamic [...] Read more.
In this paper, we analyze the autothermal reforming (ATR) of methane through Gibbs energy minimization and entropy maximization methods to analyze isothermic and adiabatic systems, respectively. The software GAMS® 23.9 and the CONOPT3 solver were used to conduct the simulations and thermodynamic analyses in order to determine the equilibrium compositions and equilibrium temperatures of this system. Simulations were performed covering different pressures in the range of 1 to 10 atm, temperatures between 873 and 1073 K, steam/methane ratio was varied in the range of 1.0/1.0 and 2.0/1.0 and oxygen/methane ratios in the feed stream, in the range of 0.5/1.0 to 2.0/1.0. The effect of using pure oxygen or air as oxidizer agent to perform the reaction was also studied. The simulations were carried out in order to maintain the same molar proportions of oxygen as in the simulated cases considering pure oxygen in the reactor feed. The results showed that the formation of hydrogen and synthesis gas increased with temperature, average composition of 71.9% and 56.0% using air and O2, respectively. These results are observed at low molar oxygen ratios (O2/CH4 = 0.5) in the feed. Higher pressures reduced the production of hydrogen and synthesis gas produced during ATR of methane. In general, reductions on the order of 19.7% using O2 and 14.0% using air were observed. It was also verified that the process has autothermicity in all conditions tested and the use of air in relation to pure oxygen favored the compounds of interest, mainly in conditions of higher pressure (10 atm). The mean reductions with increasing temperature in the percentage increase of H2 and syngas using air under 1.5 and 10 atm, at the different O2/CH4 ratios, were 5.3%, 13.8% and 16.5%, respectively. In the same order, these values with the increase of oxygen were 3.6%, 6.4% and 9.1%. The better conditions for the reaction include high temperatures, low pressures and low O2/CH4 ratios, a region in which there is no swelling in terms of the oxygen source used. In addition, with the introduction of air, the final temperature of the system was reduced by 5%, which can help to reduce the negative impacts of high temperatures in reactors during ATR reactions. Full article
(This article belongs to the Special Issue Methane Dry Reforming)
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20 pages, 5155 KiB  
Article
Effect of Metal Dopant on the Performance of Ni@CeMeO2 Embedded Catalysts (Me = Gd, Sm and Zr) for Dry Reforming of Methane
by André L. A. Marinho, Raimundo C. Rabelo-Neto, Florence Epron, Fabio S. Toniolo, Fabio B. Noronha and Nicolas Bion
Methane 2022, 1(4), 300-319; https://doi.org/10.3390/methane1040023 - 28 Nov 2022
Cited by 4 | Viewed by 1823
Abstract
Biogas upgrading by a catalytic process has been studied in order to obtain syngas using renewable source of methane. This work evaluates the influence of metal dopant (Gd, Sm, and Zr) on the CeO2 structure for the dry reforming of methane over [...] Read more.
Biogas upgrading by a catalytic process has been studied in order to obtain syngas using renewable source of methane. This work evaluates the influence of metal dopant (Gd, Sm, and Zr) on the CeO2 structure for the dry reforming of methane over Ni nanoparticle embedded catalysts. The doping with Zr improved the thermal stability of the catalyst, leading to the formation of small Ni nanoparticles, while Ni metal sintering was observed for Ni@CeO2, Ni@CeGdO2, and Ni@SmO2, according to in situ XRD under reduction conditions. The ceria reducibility was affected by the dopant nature, for which the addition of Zr caused distortions in the ceria lattice, promoting the diffusion of oxygen bulk to surface. The doping with Gd and Sm created oxygen vacancies by charge compensation, and the saturation of oxygen vacancies in the fresh samples decreased the degree of Ce reduction, according to TPR results. The larger Ni particles and poor redox behavior for Ni@CeGdO2 and Ni@CeSmO2 were responsible for the high carbon formation on these catalysts during the DRM reaction. The Ni@CeZrO2 catalyst did not present coke formation because of smaller Ni crystallite size and higher ceria reducibility. Therefore, the control of Ni particle size and the high oxygen mobility in the Ni@CeZrO2 catalyst inhibits carbon deposition and enhances the mechanism of carbon removal, promoting the catalyst stability. Full article
(This article belongs to the Special Issue Methane Dry Reforming)
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Review

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17 pages, 6233 KiB  
Review
Research Progress on Stability Control on Ni-Based Catalysts for Methane Dry Reforming
by Minghui Wei and Xuerong Shi
Methane 2024, 3(1), 86-102; https://doi.org/10.3390/methane3010006 - 6 Feb 2024
Cited by 2 | Viewed by 1128
Abstract
CO2 reforming of CH4 (DRM) utilizes the greenhouse gases of CH4 and CO2 to obtain the synthesis gas, benefiting the achievement of carbon neutrality. However, the deactivation of Ni-based catalysts caused by sintering and carbon deposition limits the industrial [...] Read more.
CO2 reforming of CH4 (DRM) utilizes the greenhouse gases of CH4 and CO2 to obtain the synthesis gas, benefiting the achievement of carbon neutrality. However, the deactivation of Ni-based catalysts caused by sintering and carbon deposition limits the industrial application. Focusing on stability improvement, this review first summarizes the reaction mechanism and deactivation mechanism in DRM and then discusses the impact of catalyst active components, supports, and interfacial structure. Finally, we propose the design direction of stable Ni-based catalysts towards DRM, providing guidance for the future development of catalysts suitable for industrial production. Full article
(This article belongs to the Special Issue Methane Dry Reforming)
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