Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
6.8
3.8
Journals
Catalysts
Special Issues
Supported Catalysts for Carbon Oxides Methanation
share announcement

Supported Catalysts for Carbon Oxides Methanation

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

Deadline for manuscript submissions: closed (30 November 2019) | Viewed by 22837

Special Issue Editor

Prof. Dr. Anastasia Macario

E-Mail Website
Guest Editor
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
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Very recently, an international agreement was reached on global efforts to reduce greenhouse gas emissions (Paris Climate Summit). The password for the future is Decarbonation. Conversion of methane by carbon oxides into useful products can contribute to a significant decrease in global warming and represents a paramount change in the global vision aimed at converting “spent carbon” into “working carbon”. COx methanation is a process of great interest in capture and storage (CCS) process and as renewable energy storage systems, based on a Power-to-Gas conversion process using SNG (Substitute or Synthetic Natural Gas) production. For this reason, research on COx methanation has intensified over the last 10 years. The design of active, stable, selective and cheap catalyst is the core of the methanation process.

The Special Issue promotes researches and scientific works divulgation on preparation, characterization and application of supported catalysts for carbon oxides methanation. Original research papers, short communications and review articles on the development of heterogeneous catalysts and their physic-chemical properties in carbon oxides methanation reaction are welcome.

Prof. Dr. Anastasia Macario
Guest Editor

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

  • methane
  • carbon oxides
  • hydrogenation
  • metal catalyst
  • power-to-gas
  • synthetic natural gas

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

Further information on MDPI's Special Issue polices can be found here.

Published Papers (4 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

15 pages, 3276 KiB  
Article
CO and CO2 Co-Methanation on Ni/CeO2-ZrO2 Soft-Templated Catalysts
by Luciano Atzori, Elisabetta Rombi, Daniela Meloni, Maria Franca Sini, Roberto Monaci and Maria Giorgia Cutrufello
Catalysts 2019, 9(5), 415; https://doi.org/10.3390/catal9050415 - 2 May 2019
Cited by 28 | Viewed by 5997
Abstract
Supported nickel catalysts were synthesized, characterized, and employed in the carbon oxides co-methanation process. Five NiO/CeO2-ZrO2 mixed oxides, with the same Ni content and different Ce/Zr molar ratios, were prepared by the soft-template method. They were characterized through ICP-AES, N [...] Read more.
Supported nickel catalysts were synthesized, characterized, and employed in the carbon oxides co-methanation process. Five NiO/CeO2-ZrO2 mixed oxides, with the same Ni content and different Ce/Zr molar ratios, were prepared by the soft-template method. They were characterized through ICP-AES, N2 adsorption, XRD, and TPR. Reduced Ni/CeO2-ZrO2 catalysts were obtained by submitting the oxide systems to reduction treatment in H2 at 400 °C. They were characterized by XRD, H2-TPD, and CO2 adsorption microcalorimetry and their catalytic performances in the carbon oxides co-methanation were investigated. Catalytic tests were performed in a fixed-bed continuous-flow microreactor at atmospheric pressure. The effect of experimental conditions (reaction temperature, space velocity, reactants molar ratio) was also studied. Almost complete CO conversion was obtained on any catalyst, whereas CO2 conversion was much lower and increased with Ce content, at least up to Ce/Zr = 1. The beneficial effect of the Ce content could be related to the increased NiO reducibility and to the higher ability to adsorb and activate CO2. However, at high Ce/Zr ratios, it is probably counterbalanced by an interplay of reactions involving CO and CO2. Full article
(This article belongs to the Special Issue Supported Catalysts for Carbon Oxides Methanation)
►▼ Show Figures

Figure 1

13 pages, 2443 KiB  
Article
Structure-Sensitivity of CO2 Methanation over Nanostructured Ni Supported on CeO2 Nanorods
by Eleonora Marconi, Simonetta Tuti and Igor Luisetto
Catalysts 2019, 9(4), 375; https://doi.org/10.3390/catal9040375 - 22 Apr 2019
Cited by 49 | Viewed by 5731
Abstract
Ni-based oxides are widely investigated as catalysts for CO2 methanation due to their high activity, high selectivity and low cost. The catalytic performances of Ni-based catalysts depend on support properties that strongly influence the dispersion of the catalytic active phase and the [...] Read more.
Ni-based oxides are widely investigated as catalysts for CO2 methanation due to their high activity, high selectivity and low cost. The catalytic performances of Ni-based catalysts depend on support properties that strongly influence the dispersion of the catalytic active phase and the Ni–support interaction. Although the CO2 methanation is widely studied, the structure sensitivity of methanation on nickel is not completely assessed. Ni/CeO2 nanorods with different nickel/ceria molar ratios (0.05, 0.10, 0.20, 0.30) were prepared by one-pot hydrothermal synthesis. The effect of nickel content and metal particle size on catalytic activity and selectivity for CO2 methanation were studied using CO2:H2 = 1:4 stoichiometric ratio at high space velocity (300 L g−1 h−1). Sample structure and morphology were studied by X-ray diffraction (XRD), Brunauer–Emmet–Teller (BET) analysis, field-emission scanning electron microscopy/energy-dispersive spectroscopy (FE-SEM/EDS), H2-temperature programmed reduction (TPR), H2-temperature-programmed desorption (TPD). Both the CO production and the turnover frequency appear depending on nickel particle size, suggesting a structure sensitivity of the CO2 methanation on nickel supported on ceria. Full article
(This article belongs to the Special Issue Supported Catalysts for Carbon Oxides Methanation)
►▼ Show Figures

Graphical abstract

15 pages, 5521 KiB  
Article
Mn Modified Ni/Bentonite for CO2 Methanation
by Yuexiu Jiang, Tongxia Huang, Lihui Dong, Tongming Su, Bin Li, Xuan Luo, Xinling Xie, Zuzeng Qin, Cuixia Xu and Hongbing Ji
Catalysts 2018, 8(12), 646; https://doi.org/10.3390/catal8120646 - 10 Dec 2018
Cited by 30 | Viewed by 5483
Abstract
To enhance the low-temperature catalytic activity and stability of Ni/bentonite catalyst, Ni-Mn/bentonite catalyst was prepared by introducing Mn into Ni/bentonite catalyst and was used for CO2 methanation. The results indicated that the addition of Mn enhanced the interaction between the NiO and [...] Read more.
To enhance the low-temperature catalytic activity and stability of Ni/bentonite catalyst, Ni-Mn/bentonite catalyst was prepared by introducing Mn into Ni/bentonite catalyst and was used for CO2 methanation. The results indicated that the addition of Mn enhanced the interaction between the NiO and the bentonite carrier, increased the dispersion of the active component Ni and decreased the grain size of the active component Ni, increased the specific surface area and pore volume of the Ni/bentonite catalyst, and decreased the average pore size, which suppressed the aggregation of Ni particles grown during the CO2 methanation process. At the same time, the Mn addition increased the amount of oxygen vacancies on the Ni/bentonite catalyst surface, which promoted the activation of CO2 in the methanation reaction, increasing the low-temperature activity and stability of the Ni/bentonite catalyst. Under the reaction condition of atmospheric pressure, 270 °C, V(H2):V(CO2) = 4, and feed gas space velocity of 3600 mL·gcat−1·h−1, the CO2 conversion on the Ni-Mn/bentonite catalyst with 2wt% Mn was 85.2%, and the selectivity of CH4 was 99.8%. On the other hand, when Mn was not added, the CO2 conversion reached 84.7% and the reaction temperature only raised to 300 °C. During a 150-h stability test, the CO2 conversion of Ni-2wt%Mn/bentonite catalyst decreased by 2.2%, while the CO2 conversion of the Ni/bentonite catalyst decreased by 6.4%. Full article
(This article belongs to the Special Issue Supported Catalysts for Carbon Oxides Methanation)
►▼ Show Figures

Figure 1

13 pages, 6190 KiB  
Article
High CO Methanation Performance of Two-Dimensional Ni/MgAl Layered Double Oxide with Enhanced Oxygen Vacancies via Flash Nanoprecipitation
by Mengjuan Zhang, Feng Yu, Jiangbing Li, Kai Chen, Yongbin Yao, Panpan Li, Mingyuan Zhu, Yulin Shi, Qiang Wang and Xuhong Guo
Catalysts 2018, 8(9), 363; https://doi.org/10.3390/catal8090363 - 29 Aug 2018
Cited by 31 | Viewed by 4788
Abstract
As a methanation tool, two-dimensional (2D) carrier-loaded Ni has attracted the attention of many researchers. We successfully prepared 2D MgAl layered double oxides (LDO) carriers via flash nanoprecipitation (FNP). Compared to the LDO samples prepared by conventional co-precipitation (CP), the 2D MgAl-LDO (FNP) [...] Read more.
As a methanation tool, two-dimensional (2D) carrier-loaded Ni has attracted the attention of many researchers. We successfully prepared 2D MgAl layered double oxides (LDO) carriers via flash nanoprecipitation (FNP). Compared to the LDO samples prepared by conventional co-precipitation (CP), the 2D MgAl-LDO (FNP) has more oxygen vacancies and more exposed active sites. The Ni/MgAl-LDO (FNP) catalyst demonstrates a CO conversion of 97%, a CH4 selectivity of 79.8%, a turnover frequency of 0.141 s−1, and a CH4 yield of 77.4% at 350 °C. The weight hourly space velocity was 20,000 mL∙g−1∙h−1 with a synthesis gas flow rate of 65 mL∙min−1, and a pressure of 1 atm. A control experiment used the CP method to prepare Ni/MgAl-LDO. This material exhibits a CO conversion of 81.1%, a CH4 selectively of 75.1%, a TOF of 0.118 s−1, and a CH4 yield of 61% at 450 °C. We think that this FNP method can be used for the preparation of more 2D LDO catalysts. Full article
(This article belongs to the Special Issue Supported Catalysts for Carbon Oxides Methanation)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-4
Back to TopTop