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Energies
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Hydrogen and Syngas Generation
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Hydrogen and Syngas Generation

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A5: Hydrogen Energy".

Deadline for manuscript submissions: closed (23 July 2021) | Viewed by 9808

Special Issue Editors

Prof. Dr. Vladislav A. Sadykov

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Guest Editor
Department of Natural Sciences, Novosibirsk State University, 630090 Novosibirsk, Russia
Interests: heterogeneous catalysis of red-ox processes for energy production, including solid oxide fuel cells; transformation of biofuels into syngas and hydrogen; advanced technologies of nanophase and nanocomposite materials synthesis; design of structured functionally graded materials for solid oxide fuel cells, monolithic catalysts for fuels transformation into syngas and hydrogen; oxygen/hydrogen separation membranes for catalytic reactors of syngas/hydrogen generation
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Vassilis Stathopoulos

E-Mail Website
Guest Editor
Laboratory of Chemistry and Materials Technology, Department of Agricultural Development, Agrofood and Management of Natural Resources, National and Kapodistrian University of Athens, Psachna Campus, 34400 Evia, Greece
Interests: environmental ceramics; functional coatings; surface phenomena; energy-related applications of ceramics and coatings; catalysts
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Christos Argirusis

E-Mail Website
Guest Editor
School of Chemical Engineering, National Technical University of Athens, 15773 Athens, Greece
Interests: MOFs; sono(electro)chemistry; photocatalysis; AOPs; environment; materials for energy applications; electrochemical conversion and storage
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The Guest Editors are inviting submissions to a Special Issue of Energies, titled “Hydrogen and Syngas Generation”. These topics are related to vital hydrogen and renewable energy fields including catalytic transformation of biogas/biofuels into syngas and hydrogen on structured catalysts for feeding fuel cells and synfuels production and hydrogen and syngas generation in catalytic reactors equipped with hydrogen/oxygen separation membranes or in solid oxide electrolysers.

This Special Issue will deal with novel approaches to designing efficient catalysts of these processes and their operation optimization via elucidation of atomic-scale features of reaction mechanism; synthesis of nanocomposite active components by new methods and detailed characterization of their real structure, surface properties, and reactivity; and mathematical modeling of real device performance, taking into account heat and mass transfer processes. Topics of interest for publication include, but are not limited to, the following:

  • Design of new types of nanocomposite active components for catalysts of syngas and hydrogen generation;
  • Design of structured heat-conducting catalysts for biogas/biofuels transformation into syngas by partial oxidation, steam/dry, or autothermal reforming;
  • Internal reforming of biofuels in SOFC;
  • Design and testing of asymmetric supported nanocomposite membranes for oxygen separation from air (to be used for biofuels oxidation) or hydrogen separation from syngas;
  • Design and testing of structured catalysts for water gas shift reaction and preferential CO oxidation in hydrogen feeds;
  • Design and testing of SOE for transformation of water-CO2 feeds into syngas;
  • Mathematical modeling of structured catalysts, catalytic membrane, SOFC, and SOE performance;
  • Syngas and hydrogen generation in redox cycles for complex oxide/metal systems with a high oxygen mobility and storage capacity;
  • Performance stability to coking and sintering;
  • Hydrogen generation by interaction of Al-based alloys with water.
Prof. Dr. Vladislav A. Sadykov
Prof. Dr. Vassilis Stathopoulos
Prof. Dr. Christos Argirusis
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. Energies is an international peer-reviewed open access semimonthly 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 2600 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

  • Hydrogen and syngas generation
  • Structured catalysts
  • Hydrogen or oxygen separation membranes
  • Nanocomposites with high oxygen/hydrogen mobility
  • Biofuels
  • Partial oxidation, steam reforming, dry reforming, autothermal reforming
  • Stability to coking
  • Energy storage system
  • Renewable energy
  • Mathematical modeling
  • SOFC, SOE

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Published Papers (3 papers)

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Research

16 pages, 35750 KiB  
Article
Kinetic Regularities of Methane Dry Reforming Reaction on Nickel-Containing Modified Ceria–Zirconia
by Valeria Fedorova, Mikhail Simonov, Konstantin Valeev, Yuliya Bespalko, Ekaterina Smal, Nikita Eremeev, Ekaterina Sadovskaya, Tamara Krieger, Arcady Ishchenko and Vladislav Sadykov
Energies 2021, 14(10), 2973; https://doi.org/10.3390/en14102973 - 20 May 2021
Cited by 20 | Viewed by 2445
Abstract
The Ni-containing catalysts based on ceria–zirconia doped with Ti and Ti+Nb were prepared by the solvothermal method in supercritical fluids. Ni deposition was carried out by incipient wetness impregnation and the one-pot technique. All materials were investigated by a complex of physicochemical methods [...] Read more.
The Ni-containing catalysts based on ceria–zirconia doped with Ti and Ti+Nb were prepared by the solvothermal method in supercritical fluids. Ni deposition was carried out by incipient wetness impregnation and the one-pot technique. All materials were investigated by a complex of physicochemical methods (XRD, BET, TEM, H2-TPR). Samples catalytic properties were studied in methane dry reforming in the plug-flow reactor. Conversions of CH4 and CO2, H2/CO ratio, and CO and H2 yields were measured, and detailed kinetics analysis was carried out. The influence of Ni loading method and support modification on the catalytic behavior in the methane dry reforming process was studied. The preparation method of catalysts affects the textural characteristics. For one-pot samples, pore volume and surface area are lower than for impregnated samples. For catalysts on modified supports, strong metal–support interaction was shown to increase catalytic activity. A reduction pretreatment of samples was shown to have significant influence on their catalytic properties. The kinetic parameters such as reaction rate constant at 700 °C, effective activation energy, and TOF were estimated and analyzed. Full article
(This article belongs to the Special Issue Hydrogen and Syngas Generation)
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22 pages, 3512 KiB  
Article
Sorption-Enhanced Water-Gas Shift Reaction for Synthesis Gas Production from Pure CO: Investigation of Sorption Parameters and Reactor Configurations
by Tabea J. Stadler, Philipp Barbig, Julian Kiehl, Rafael Schulz, Thomas Klövekorn and Peter Pfeifer
Energies 2021, 14(2), 355; https://doi.org/10.3390/en14020355 - 11 Jan 2021
Cited by 11 | Viewed by 3884
Abstract
A sorption-enhanced water-gas shift (SEWGS) system providing CO2-free synthesis gas (CO + H2) for jet fuel production from pure CO was studied. The water-gas shift (WGS) reaction was catalyzed by a commercial Cu/ZnO/Al2O3 catalyst and carried [...] Read more.
A sorption-enhanced water-gas shift (SEWGS) system providing CO2-free synthesis gas (CO + H2) for jet fuel production from pure CO was studied. The water-gas shift (WGS) reaction was catalyzed by a commercial Cu/ZnO/Al2O3 catalyst and carried out with in-situ CO2 removal on a 20 wt% potassium-promoted hydrotalcite-derived sorbent. Catalyst activity was investigated in a fixed bed tubular reactor. Different sorbent materials and treatments were characterized by CO2 chemisorption among other analysis methods to choose a suitable sorbent. Cyclic breakthrough tests in an isothermal packed bed microchannel reactor (PBMR) were performed at significantly lower modified residence times than those reported in literature. A parameter study gave an insight into the effect of pressure, adsorption feed composition, desorption conditions, as well as reactor configuration on breakthrough delay and adsorbed amount of CO2. Special attention was paid to the steam content. The significance of water during adsorption as well as desorption confirmed the existence of different adsorption sites. Various reactor packing concepts showed that the interaction of relatively fast reaction and relatively slow adsorption kinetics plays a key role in the SEWGS process design at low residence time conditions. Full article
(This article belongs to the Special Issue Hydrogen and Syngas Generation)
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20 pages, 7347 KiB  
Article
Structural, Textural, and Catalytic Properties of Ni-CexZr1−xO2 Catalysts for Methane Dry Reforming Prepared by Continuous Synthesis in Supercritical Isopropanol
by Svetlana Pavlova, Marina Smirnova, Aleksei Bobin, Svetlana Cherepanova, Vasily Kaichev, Arcady Ishchenko, Aleksandra Selivanova, Vladimir Rogov, Anne-Cécile Roger and Vladislav Sadykov
Energies 2020, 13(14), 3728; https://doi.org/10.3390/en13143728 - 20 Jul 2020
Cited by 8 | Viewed by 2549
Abstract
A series of 5%Ni-CexZr1−xO2 (x = 0.3, 0.5, 0.7) catalysts has been prepared via one-pot solvothermal continuous synthesis in supercritical isopropanol and incipient wetness impregnation of CexZr1−xO2 obtained by the same route. The [...] Read more.
A series of 5%Ni-CexZr1−xO2 (x = 0.3, 0.5, 0.7) catalysts has been prepared via one-pot solvothermal continuous synthesis in supercritical isopropanol and incipient wetness impregnation of CexZr1−xO2 obtained by the same route. The textural, structural, red-ox, and catalytic properties in methane dry reforming (MDR) of Ni-modified Ce-Zr oxides synthesized by two routes have been compared. It was shown by XRD, TEM, and Raman spectroscopy that the method of Ni introduction does not affect the phase composition of the catalysts, but determines the dispersion of NiO. Despite a high dispersion of NiO and near-uniform distribution of Ni within Ce-Zr particles observed for the one-pot catalysts, they have shown a lower activity and stability in MDR as compared with impregnated ones. This is a result of a low Ni concentration in the surface layer due to segregation of Ce and decoration of nickel nanoparticles with support species. Full article
(This article belongs to the Special Issue Hydrogen and Syngas Generation)
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