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Processes
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Design of an After-Treatment Catalyst System for Combustion Applications
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Design of an After-Treatment Catalyst System for Combustion Applications

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Catalysis Enhanced Processes".

Deadline for manuscript submissions: closed (31 October 2021) | Viewed by 15437

Special Issue Editors

Dr. Ahmed Osman

E-Mail Website
Guest Editor
School of Chemistry and Chemical Engineering, Queen’s University Belfast, Belfast BT9 5AG, Northern Ireland, UK
Interests: heterogenous catalysis; methane oxidation; methanol synthesis; hydrogen production; biomass; plastics
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. David Rooney

E-Mail Website
Guest Editor
School of Chemistry and Chemical Engineering, Queen’s University Belfast, Belfast BT9 5AG, Northern Ireland, UK
Interests: heterogeneous catalysis, engineering of ionic liquid processes and rhermophysical property prediction; energy capture and storage; anaerobic digestion gas processing

Special Issue Information

Dear Colleagues,

This Special Issue on “Design of an After-Treatment Catalyst System for Combustion Applications” is to promote the research and progress in the area of after-treatment catalyst systems by bringing together academic scientists and industry working in the catalysis and process engineering fields in developing robust and cheaper alternatives to the current catalytic combustion problem, either stationary systems such as boilers or mobile combustion systems such as vehicles. The Special Issue will be focusing on the catalyst materials development, characterisation and testing and in the design of the reactor and heat transfer system in after-treatment catalyst systems.

 Basics
1. Preparation and utilisation of noble metal catalyst in combustion reactions;
2. Preparation and use of transition metal catalysts in combustion reactions;
3. Methane total and partial oxidation reactions;
4. Catalyst deactivation in combustion reactions;
5. Water gas shift reactions in combustion/reforming reactions;
6. Modelling and simulation for process optimisation.

Applications
1. Stationary combustion systems (boilers and CHP (combine heat power), etc.);
2. Photocatalytic systems in oxidation processes;
3. Application of combustion reaction in solid oxide fuel cells;
4. Mobile combustion systems (vehicles, etc.);
5. Thermal reactor design and application in combustion systems.

Dr. Ahmed Osman
Prof. David Rooney
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. Processes 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 2400 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

  • Combustion reaction
  • Total methane oxidation
  • Partial methane oxidation
  • Nobel metal catalyst
  • Catalysis
  • Photocatalysis
  • Modelling
  • Deactivation
  • Characterisation
  • Oxidation

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Published Papers (4 papers)

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Research

15 pages, 4187 KiB  
Article
Role of Mixed Oxides in Hydrogen Production through the Dry Reforming of Methane over Nickel Catalysts Supported on Modified γ-Al2O3
by Ahmed Sadeq Al-Fatesh, Mayankkumar Lakshmanbhai Chaudhary, Anis Hamza Fakeeha, Ahmed Aidid Ibrahim, Fahad Al-Mubaddel, Samsudeen Olajide Kasim, Yousef Abdulrahman Albaqmaa, Abdulaziz A. Bagabas, Rutu Patel and Rawesh Kumar
Processes 2021, 9(1), 157; https://doi.org/10.3390/pr9010157 - 15 Jan 2021
Cited by 31 | Viewed by 3099
Abstract
H2 production through dry reforming of methane (DRM) is a hot topic amidst growing environmental and atom-economy concerns. Loading Ni-based reducible mixed oxide systems onto a thermally stable support is a reliable approach for obtaining catalysts of good dispersion and high stability. [...] Read more.
H2 production through dry reforming of methane (DRM) is a hot topic amidst growing environmental and atom-economy concerns. Loading Ni-based reducible mixed oxide systems onto a thermally stable support is a reliable approach for obtaining catalysts of good dispersion and high stability. Herein, NiO was dispersed over MOx-modified-γ-Al2O3 (M = Ti, Mo, Si, or W; x = 2 or 3) through incipient wetness impregnation followed by calcination. The obtained catalyst systems were characterized by infrared, ultraviolet–visible, and X-ray photoelectron spectroscopies, and H2 temperature-programmed reduction. The mentioned synthetic procedure afforded the proper nucleation of different NiO-containing mixed oxides and/or interacting-NiO species. With different modifiers, the interaction of NiO with the γ-Al2O3 support was found to change, the Ni2+ environment was reformed exclusively, and the tendency of NiO species to undergo reduction was modified greatly. Catalyst systems 5Ni3MAl (M = Si, W) comprised a variety of species, whereby NiO interacted with the modifier and the support (e.g., NiSiO3, NiAl2O4, and NiWO3). These two catalyst systems displayed equal efficiency, >70% H2 yield at 800 °C, and were thermally stable for up to 420 min on stream. 5Ni3SiAl catalyst regained nearly all its activity during regeneration for up to two cycles. Full article
(This article belongs to the Special Issue Design of an After-Treatment Catalyst System for Combustion Applications)
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15 pages, 4810 KiB  
Article
Catalytic Performance of Lanthanum Promoted Ni/ZrO2 for Carbon Dioxide Reforming of Methane
by Mahmud S. Lanre, Ahmed S. Al-Fatesh, Anis H. Fakeeha, Samsudeen O. Kasim, Ahmed A. Ibrahim, Abdulrahman S. Al-Awadi, Attiyah A. Al-Zahrani and Ahmed E. Abasaeed
Processes 2020, 8(11), 1502; https://doi.org/10.3390/pr8111502 - 20 Nov 2020
Cited by 22 | Viewed by 3089
Abstract
Nickel catalysts supported on zirconium oxide and modified by various amounts of lanthanum with 10, 15, and 20 wt.% were synthesized for CO2 reforming of methane. The effect of La2O3 as a promoter on the stability of the catalyst, [...] Read more.
Nickel catalysts supported on zirconium oxide and modified by various amounts of lanthanum with 10, 15, and 20 wt.% were synthesized for CO2 reforming of methane. The effect of La2O3 as a promoter on the stability of the catalyst, the amount of carbon formed, and the ratio of H2 to CO were investigated. In this study, we observed that promoting the catalyst with La2O3 enhanced catalyst activities. The conversions of the feed, i.e., methane and carbon dioxide, were in the order 10La2O3 > 15La2O3 > 20La2O3 > 0La2O3, with the highest conversions being about 60% and 70% for both CH4 and CO2 respectively. Brunauer–Emmett–Teller (BET) analysis showed that the surface area of the catalysts decreased slightly with increasing La2O3 doping. We observed that 10% La2O3 doping had the highest specific surface area (21.6 m2/g) and the least for the un-promoted sample. The higher surface areas of the promoted samples relative to the reference catalyst is an indication of the concentration of the metals at the mouths of the pores of the support. XRD analysis identified the different phases available, which ranged from NiO species to the monoclinic and tetragonal phases of ZrO2. Temperature programmed reduction (TPR) analysis showed that the addition of La2O3 lowered the activation temperature needed for the promoted catalysts. The structural changes in the morphology of the fresh catalyst were revealed by microscopic analysis. The elemental compositions of the catalyst, synthesized through energy dispersive X-ray analysis, were virtually the same as the calculated amount used for the synthesis. The thermogravimetric analysis (TGA) of spent catalysts showed that the La2O3 loading of 10 wt.% contributed to the gasification of carbon deposits and hence gave about 1% weight-loss after a reaction time of 7.5 h at 700 °C. Full article
(This article belongs to the Special Issue Design of an After-Treatment Catalyst System for Combustion Applications)
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14 pages, 1888 KiB  
Article
Catalytic Performance of Metal Oxides Promoted Nickel Catalysts Supported on Mesoporous γ-Alumina in Dry Reforming of Methane
by Anis H. Fakeeha, Abdulaziz A. Bagabas, Mahmud S. Lanre, Ahmed I. Osman, Samsudeen O. Kasim, Ahmed A. Ibrahim, Rasheed Arasheed, Abdulmajeed Alkhalifa, Ahmed Y. Elnour, Ahmed E. Abasaeed and Ahmed S. Al-Fatesh
Processes 2020, 8(5), 522; https://doi.org/10.3390/pr8050522 - 28 Apr 2020
Cited by 19 | Viewed by 3456
Abstract
Dry reforming of CH4 was conducted over promoted Ni catalysts, supported on mesoporous gamma-alumina. The Ni catalysts were promoted by various metal oxides (CuO, ZnO, Ga2O3, or Gd2O3) and were synthesized by the incipient [...] Read more.
Dry reforming of CH4 was conducted over promoted Ni catalysts, supported on mesoporous gamma-alumina. The Ni catalysts were promoted by various metal oxides (CuO, ZnO, Ga2O3, or Gd2O3) and were synthesized by the incipient wetness impregnation method. The influence of the promoters on the catalyst stability, coke deposition, and H2/CO mole ratio was investigated. Stability tests were carried out for 460 min. The H2 yield was 87% over 5Ni+1Gd/Al, while the CH4 and CO2 conversions were found to decrease in the following order: 5Ni+1Gd/Al > 5Ni+1Ga/Al > 5Ni+1Zn/Al > 5Ni/Al > 5Ni+1Cu/Al. The high catalytic performance of 5Ni+1Gd/Al, 5Ni+1Ga/Al, and 5Ni+1Zn/Al was found to be closely related to their contents of NiO species, which interacted moderately and strongly with the support, whereas free NiO in 5Ni+1Cu/Al made it catalytically inactive, even than 5Ni/Al. The 5Ni+1Gd/Al catalyst showed the highest CH4 conversion of 83% with H2/CO mole ratio of ~1.0. Full article
(This article belongs to the Special Issue Design of an After-Treatment Catalyst System for Combustion Applications)
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21 pages, 5550 KiB  
Article
Hydrogen Production by Partial Oxidation Reforming of Methane over Ni Catalysts Supported on High and Low Surface Area Alumina and Zirconia
by Anis Fakeeha, Ahmed A. Ibrahim, Hesham Aljuraywi, Yazeed Alqahtani, Ahmad Alkhodair, Suliman Alswaidan, Ahmed E. Abasaeed, Samsudeen O. Kasim, Sofiu Mahmud and Ahmed S. Al-Fatesh
Processes 2020, 8(5), 499; https://doi.org/10.3390/pr8050499 - 25 Apr 2020
Cited by 33 | Viewed by 5022
Abstract
The catalytic activity of the partial oxidation reforming reaction for hydrogen production over 10% Ni supported on high and low surface area alumina and zirconia was investigated. The reforming reactions, under atmospheric pressure, were performed with a feed molar ratio of CH4 [...] Read more.
The catalytic activity of the partial oxidation reforming reaction for hydrogen production over 10% Ni supported on high and low surface area alumina and zirconia was investigated. The reforming reactions, under atmospheric pressure, were performed with a feed molar ratio of CH4/O2 = 2.0. The reaction temperature was set to 450–650 °C. The catalytic activity, stability, and carbon formation were determined via TGA, TPO, Raman, and H2 yield. The catalysts were calcined at 600 and 800 °C. The catalysts were prepared via the wet-impregnation method. Various characterizations were conducted using BET, XRD, TPR, TGA, TPD, TPO, and Raman. The highest methane conversion (90%) and hydrogen yield (72%) were obtained at a 650 °C reaction temperature using Ni-Al-H-600, which also showed the highest stability for the ranges of the reaction temperatures investigated. Indeed, the time-on-stream for 7 h of the Ni-Al-H-600 catalyst displayed high activity and a stable profile when the reaction temperature was set to 650 °C. Full article
(This article belongs to the Special Issue Design of an After-Treatment Catalyst System for Combustion Applications)
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