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Membranes
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Membranes and Membrane Reactors for Gas Purification and Production: Towards...
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Membranes and Membrane Reactors for Gas Purification and Production: Towards More Sustainable Processes

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

Deadline for manuscript submissions: 30 June 2025 | Viewed by 1048

Special Issue Editor

Dr. Pasquale F. Zito

E-Mail Website
Guest Editor
National Research Council—Institute on Membrane Technology (CNR-ITM), Via P. Bucci, 17/C, 87036 Rende, CS, Italy
Interests: chemical engineering; gas separation by membranes; green chemistry

Special Issue Information

Dear Colleagues,

Membrane technology is replacing traditional reaction and separation methods to obtain pure and valuable components from gas mixtures. In particular, membrane reactors offer lower capital costs, more compact units, and higher yields than traditional reactors due to the possibility of integrating reaction and separation in the same equipment and shifting the equilibrium towards the products (e.g., by removing a product from the reaction environment). Similarly, membrane separation presents several benefits (e.g., low energy consumption, simple operation process, small footprint, etc.), making it attractive for treatment of liquid and gas mixtures in a sustainable way, especially compared to the traditional separation methods.

We invite you to the Special Issue “Membranes and Membrane Reactors for Gas Purification and Production: Towards More Sustainable Processes”. This Special Issue aims to provide the last contributions on membrane separation processes and membrane reactors to obtain valuable products (e.g., H2, CO2, CH4, and others) from multicomponent gas streams.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  • Synthesis and characterization of membranes and/or membrane reactors for gas purification and/or production;
  • Innovative membrane materials and sustainable membrane processes for the treatment of gas streams;
  • Simulation of gas permeation through membrane modules and/or membrane reactors;
  • Design and optimization of membrane processes for gas production and/or purification;
  • Techno-economic analyses of membrane processes.

I look forward to receiving your contributions.

Dr. Pasquale F. Zito
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. Membranes 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

  • membrane synthesis
  • membrane characterization
  • membrane reactors
  • H2 production
  • CH4 upgrading
  • CO2 removal
  • zeolite membranes
  • polymeric membranes
  • palladium membranes
  • green processes

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

Published Papers (2 papers)

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Research

20 pages, 16840 KiB  
Article
Hydrogen and Ammonia Co-Adsorption on M(1 1 1) and Pd3M(1 1 1) (M = Pd, Ru, Ag, Au, Cu) Surfaces
by Didrik R. Småbråten, Marie D. Strømsheim and Thijs A. Peters
Membranes 2025, 15(5), 135; https://doi.org/10.3390/membranes15050135 - 1 May 2025
Viewed by 215
Abstract
Ammonia (NH3) represents a promising zero-emission fuel in hydrogen fuel cells. Membrane reactors for NH3 decomposition based on Pd-alloys have demonstrated high NH3 conversion, high hydrogen diffusivity, and high hydrogen selectivity, which allows for the production of high-purity H [...] Read more.
Ammonia (NH3) represents a promising zero-emission fuel in hydrogen fuel cells. Membrane reactors for NH3 decomposition based on Pd-alloys have demonstrated high NH3 conversion, high hydrogen diffusivity, and high hydrogen selectivity, which allows for the production of high-purity H2 without the need for gas separation or purification. However, it is observed that Pd-alloy membranes are to a various degree prone to H2 flux inhibition in the presence of NH3. Hence, finding proper means to tailor the surface adsorption properties through, e.g., alloying is imperative to further improve the technology. In the current work, hydrogen and ammonia co-adsorption phenomena on M(1 1 1) and Pd3M(1 1 1) (M = Pd, Ru, Ag, Au, Cu) surfaces are studied using density functional theory calculations. It is shown that the surface adsorption properties are strongly dependent on the surface composition, which can be linked to the corresponding electronic structure at the membrane surface. Full article
(This article belongs to the Special Issue Membranes and Membrane Reactors for Gas Purification and Production: Towards More Sustainable Processes)
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20 pages, 4431 KiB  
Article
Simulation of Carbon Dioxide Absorption in a Hollow Fiber Membrane Contactor Under Non-Isothermal Conditions
by Youkang Jin, Lei Wang, Jinpeng Bi, Wei Zhao, Hui Zhang, Yuexia Lv and Xi Chen
Membranes 2025, 15(3), 93; https://doi.org/10.3390/membranes15030093 - 14 Mar 2025
Viewed by 444
Abstract
CO2 capture by membrane gas absorption technology has been considered a promising alternative to mitigate or stabilize atmospheric CO2 concentrations. The non-isothermal nature of the CO2 absorption process in hollow fiber membrane contactors is a critical factor that significantly influences [...] Read more.
CO2 capture by membrane gas absorption technology has been considered a promising alternative to mitigate or stabilize atmospheric CO2 concentrations. The non-isothermal nature of the CO2 absorption process in hollow fiber membrane contactors is a critical factor that significantly influences CO2 removal performance. In the present study, a non-isothermal mathematical model and a two-dimensional computational simulation were carried out to evaluate the CO2 separation by three typical absorbents in a polyvinylidene fluoride hollow fiber membrane contactor under non-wetting operation mode. The simulation results exhibited good matching with the published experimental data with the deviations in the range of lower than 5%, which validated the reliability of the developed numerical model. A significant temperature increase ranging from 2 to 15 K was observed along the length of the hollow fiber membrane contactor, which further facilitated the absorption and reaction process in this study. The results showed that potassium glycinate exhibited the highest absorption capacity, followed by monoethanolamine and 1-ethyl-3-methylimidazolium. In addition, the mass transfer could be enhanced by increasing the liquid flow rate, absorbent concentration, module length, and membrane porosity, while increasing the gas velocity and CO2 inlet concentration were unfavorable for the CO2 removal process. Full article
(This article belongs to the Special Issue Membranes and Membrane Reactors for Gas Purification and Production: Towards More Sustainable Processes)
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