Novel Supported Membranes for Syngas Generation and Hydrogen Separation

A special issue of Membranes (ISSN 2077-0375). This special issue belongs to the section "Membrane Applications".

Deadline for manuscript submissions: closed (15 October 2021) | Viewed by 9079

Special Issue Editors


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Guest Editor
1. Chief Research Scientist, Department of Heterogeneos Catalysis, Boreskov Institute of Catalysis, Novosibirsk 630090, Russia
2. Faculty of Natural Sciences, Novosibirsk State University, Novosibirsk 630090, Russia
Interests: heterogeneous catalysis of red-ox processes for the energy production; advanced technologies of nanophase and nanocomposite materials synthesis; their transport properties characterization; 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
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Guest Editor
O.V. Roman Powder Metallurgy Institute, Minsk 220005, Belarus
Interests: synthesis and characterization of cellular solids, such as ceramic, metallic, carbon, and composite foams; research development of some related processes; research and development of highly-porous permeable materials using powder metallurgy techniques, chemical, electro-chemical and wash coating deposition; application of the materials as monolythic catalyst supports, SOFC and membrane substrates, filters, etc.

Special Issue Information

Dear Colleagues,

The Guest Editor is inviting submissions to a Special Issue of Membranes on the subject area of “Hydrogen and Syngas Generation in membrane reactors”. This issue will deal with new approaches to the design of asymmetric supported membranes for oxygen and hydrogen separation based on fundamental studies of the structural/transport properties of mixed ionic-electronic conducting nanocomposites and these materials supporting as the functionally graded layers on robust macroporous/foam substrates. Different approaches to the spatial arrangement of catalysts (either porous layers or honeycombs) in membrane reactors and problems of their composition and design optimization will be discussed. Operation of catalytic membrane reactors in syngas generation by oxidation of fuels with oxygen separated from the air as well as in hydrogen separation from syngas generated from biofuels by partial oxidation, steam/autorhermal reforming including mathematical modeling of membranes and membrane reactors performance will be considered.

Prof. Dr. Vladislav Sadykov
Dr. Oleg L. Smorygo
Guest Editors

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Keywords

  • Renewable Energy
  • Hydrogen and syngas generation
  • Hydrogen or oxygen separation membranes
  • Nanocomposites with high oxygen/hydrogen mobility
  • Design of asymmetric supported permselective membranes
  • Catalytic membrane reactors
  • Performance in biogas/biofuels transformation into syngas and hydrogen
  • Modeling of catalytic membrane reactors performance

Published Papers (3 papers)

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Research

21 pages, 6819 KiB  
Article
An Experimental Performance Study of a Catalytic Membrane Reactor for Ethanol Steam Reforming over a Metal Honeycomb Catalyst
by Nikita Eremeev, Alexey Krasnov, Yuliya Bespalko, Ludmilla Bobrova, Oleg Smorygo and Vladislav Sadykov
Membranes 2021, 11(10), 790; https://doi.org/10.3390/membranes11100790 - 18 Oct 2021
Cited by 7 | Viewed by 2261
Abstract
The present study deals with the combination of ethanol steam reforming over a monolithic catalyst and hydrogen separation by membrane in a lab-scale catalytic membrane reactor (CMR). The catalyst was comprised of honeycomb thin-walled Fechralloy substrate loaded with Ni + Ru/Pr0.35Ce [...] Read more.
The present study deals with the combination of ethanol steam reforming over a monolithic catalyst and hydrogen separation by membrane in a lab-scale catalytic membrane reactor (CMR). The catalyst was comprised of honeycomb thin-walled Fechralloy substrate loaded with Ni + Ru/Pr0.35Ce0.35Zr0.35O2 active component. The asymmetric supported membrane consisted of a thin Ni-Cu alloy–Nd tungstate nanocomposite dense permselective layer deposited on a hierarchically structured asymmetric support. It has been shown that the monolithic catalyst-assisted CMR is capable of increasing the driving potential for hydrogen permeation through the same membrane as compared with that of the packed bed catalyst by increasing the retentate hydrogen concentration. Important operating parameters responsible for the low carbon deposition rate as well as the amount of hydrogen produced from 1 mol of ethanol, such as the temperature range of 700–900 °C, the water/ethanol molar ratio of 4 in the feed, have been determined. Regarding the choice of the reagent concentration (ethanol and steam in Ar), its magnitude may directly interfere with the effectiveness of the reaction-separation process in the CMR. Full article
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11 pages, 7484 KiB  
Article
Supported MXene/GO Composite Membranes with Suppressed Swelling for Metal Ion Sieving
by Zongjie Yin, Zong Lu, Yanyan Xu, Yonghong Zhang, Liliang He, Peishan Li, Lei Xiong, Li Ding, Yanying Wei and Haihui Wang
Membranes 2021, 11(8), 621; https://doi.org/10.3390/membranes11080621 - 13 Aug 2021
Cited by 21 | Viewed by 4022
Abstract
Novel two-dimensional (2D) membranes have been utilized in water purification or seawater desalination due to their highly designable structure. However, they usually suffer from swelling problems when immersed in solution, which limits their further applications. In this study, 2D cross-linked MXene/GO composite membranes [...] Read more.
Novel two-dimensional (2D) membranes have been utilized in water purification or seawater desalination due to their highly designable structure. However, they usually suffer from swelling problems when immersed in solution, which limits their further applications. In this study, 2D cross-linked MXene/GO composite membranes supported on porous polyamide substrates are proposed to improve the antiswelling property and enhance the ion-sieving performance. Transition-metal carbide (MXene) nanosheets were intercalated into GO nanosheets, where the carboxyl groups of GO combined the neighboring hydroxyl terminal groups of MXene with the formation of -COO- bonds between GO and MXene nanosheets via the cross-linking reaction (−OH + −COOH = −COO− + H2O) after heat treatment. The permeation rates of the metal ions (Li+, Na+, K+, Al3+) through the cross-linked MXene/GO composite membrane were 7–40 times lower than those through the pristine MXene/GO membrane. In addition, the cross-linked MXene/GO composite membrane showed excellent Na+ rejection performance (99.3%), which was significantly higher than that through pristine MXene/GO composite membranes (80.8%), showing improved ion exclusion performance. Such a strategy represents a new avenue to develop 2D material-derived high-performance membranes for water purification. Full article
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29 pages, 4647 KiB  
Article
Effect of Asymmetric Membrane Structure on Hydrogen Transport Resistance and Performance of a Catalytic Membrane Reactor for Ethanol Steam Reforming
by Ludmilla Bobrova, Nikita Eremeev, Nadezhda Vernikovskaya, Vladislav Sadykov and Oleg Smorygo
Membranes 2021, 11(5), 332; https://doi.org/10.3390/membranes11050332 - 30 Apr 2021
Cited by 5 | Viewed by 2174
Abstract
The performance of catalytic membrane reactors (CMRs) depends on the specific details of interactions at different levels between catalytic and separation parts. A clear understanding of decisive factors affecting their operational parameters can be provided via mathematical simulations. In the present paper, main [...] Read more.
The performance of catalytic membrane reactors (CMRs) depends on the specific details of interactions at different levels between catalytic and separation parts. A clear understanding of decisive factors affecting their operational parameters can be provided via mathematical simulations. In the present paper, main results of numerical studies of ethanol steam reforming, followed by downstream hydrogen permeation through an asymmetric supported membrane, are reported. The membrane module consists of a thin selective layer supported on a substrate with graded porous structure. One-dimensional isothermal reaction–transport model for the CMR has been developed, and its validation has been carried out by using performance data from a lab-scale reactor with a disk-shaped membrane. Simulations demonstrate the model’s capabilities to analyze local concentrations gradients, as required to provide accurate estimates of the relationship between structure–property–performance. It was shown that transport properties of multilayer asymmetric membranes are highly related to the structural properties of each single layer. Full article
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