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Membranes
Special Issues
Catalytic Membranes and Their Applications
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Catalytic Membranes and Their Applications

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

Deadline for manuscript submissions: closed (15 January 2020) | Viewed by 12643

Special Issue Editors

Dr. Sonia Escolastico

E-Mail Website
Guest Editor
CSIC-UPV, Instituto de Tecnología Química (ITQ), Valencia, Spain
Interests: energy; membranes; catalysis; reactors; catalytic membrane reactors; electrolyzers; fuel cells; hydrogen separation
Special Issues, Collections and Topics in MDPI journals
Dr. Cecilia Mortalò

E-Mail Website
Guest Editor
Institute of Condensed Matter Chemistry and Technologies for Energy - National Research Council (CNR-ICMATE), Padova, Italy
Interests: high-temperature ceramic conductors; hydrogen separation and purification; solid oxide fuel cell; nanomaterials; MW-assisted processes; solid-state reaction; spin coating; gel casting
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Process intensification aims to improve the production capacity and decrease the energy consumption and waste production with a subsequent reduction of the costs. The development and implementation of new equipment and processes is a crucial factor to reaching these objectives.

In this context, the integration of permselective membranes into catalytic reactors resulting in catalytic membrane reactors (CMR) enables the combination of separation and reaction in a single step, providing improved performance over conventional reactors and more environmentally safe and economically efficient processes.

Membrane reactors allow the controlled removal or feeding of different species, and are consequently able to surpass equilibrium conversion or increase product selectivity in thermodynamically limited reactions.

The membrane industry has an important position within the chemistry industry due to the wide number of possible applications, such as nanofiltration, ultrafiltration, microfiltration, and gas separation. In fact, CMR are an emerging technology for different industrial sectors, such as the petrochemical, chemical or pharmaceutical sectors.

This Special Issue, “Catalytic Membranes and Their Applications”, aims to collect key contributions about the fabrication processes, transport properties and catalytic applications of different membranes to provide an overview of recent developments in catalytic membrane reactors.

Dr. Sonia Escolastico
Dr. Cecilia Mortalò
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. 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 2700 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

  • membranes
  • reactors
  • catalysis
  • catalytic membrane reactor
  • ceramic membranes
  • metallic membranes
  • polymeric membranes
  • gas separation

Published Papers (3 papers)

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Research

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14 pages, 7014 KiB  
Article
Towards Upscaling of La5.5WO11.25−δ Manufacture for Plasma Spraying-Thin Film Coated Hydrogen Permeable Membranes
by Sonia Escolástico, Cecilia Solís, Antonio Comite, Fiorenza Azzurri, Malko Gindrat, Stefan Moser, Johannes Rauch, Gregory Szyndelman, Rajiv Damani and Jose M. Serra
Membranes 2020, 10(9), 192; https://doi.org/10.3390/membranes10090192 - 19 Aug 2020
Cited by 4 | Viewed by 1882
Abstract
Lanthanum tungstate (La6WO12) is a promising material for the development of hydrogen separation membranes, proton ceramic electrolyzer cells and protonic ceramic fuel cells due to its interesting transport properties and stability under different operation conditions. In order to improve [...] Read more.
Lanthanum tungstate (La6WO12) is a promising material for the development of hydrogen separation membranes, proton ceramic electrolyzer cells and protonic ceramic fuel cells due to its interesting transport properties and stability under different operation conditions. In order to improve the hydrogen transport through the La6WO12 membranes, thin membranes should be manufactured. This work is based on the industrial production of La5.5WO11.25−δ (LWO) powder by spray drying and the manufacturing of thin membranes by low-pressure plasma spraying (LPPS-TF) technique. LPPS-TF allows the production of dense thin films of high quality in an industrial scale. The powders produced by spray drying were morphological and electrochemically characterized. Hydrogen permeation fluxes of a membrane manufactured with these powders were evaluated and fluxes are similar to those reported previously for LWO powder produced in the lab scale. Finally, the transport properties of LWO thin films deposited on Al2O3 indicate that LPPS-TF produces high-quality LWO films with potential for integration in different applications. Full article
(This article belongs to the Special Issue Catalytic Membranes and Their Applications)
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14 pages, 2343 KiB  
Article
Thermodynamic Insights for Electrochemical Hydrogen Compression with Proton-Conducting Membranes
by Benjamin L. Kee, David Curran, Huayang Zhu, Robert J. Braun, Steven C. DeCaluwe, Robert J. Kee and Sandrine Ricote
Membranes 2019, 9(7), 77; https://doi.org/10.3390/membranes9070077 - 01 Jul 2019
Cited by 20 | Viewed by 5195
Abstract
Membrane electrode assemblies (MEA) based on proton-conducting electrolyte membranes offer opportunities for the electrochemical compression of hydrogen. Mechanical hydrogen compression, which is more-mature technology, can suffer from low reliability, noise, and maintenance costs. Proton-conducting electrolyte membranes may be polymers (e.g., Nafion) or protonic-ceramics [...] Read more.
Membrane electrode assemblies (MEA) based on proton-conducting electrolyte membranes offer opportunities for the electrochemical compression of hydrogen. Mechanical hydrogen compression, which is more-mature technology, can suffer from low reliability, noise, and maintenance costs. Proton-conducting electrolyte membranes may be polymers (e.g., Nafion) or protonic-ceramics (e.g., yttrium-doped barium zirconates). Using a thermodynamics-based analysis, the paper explores technology implications for these two membrane types. The operating temperature has a dominant influence on the technology, with polymers needing low-temperature and protonic-ceramics needing elevated temperatures. Polymer membranes usually require pure hydrogen feed streams, but can compress H 2 efficiently. Reactors based on protonic-ceramics can effectively integrate steam reforming, hydrogen separation, and electrochemical compression. However, because of the high temperature (e.g., 600 ° C) needed to enable viable proton conductivity, the efficiency of protonic-ceramic compression is significantly lower than that of polymer-membrane compression. The thermodynamics analysis suggests significant benefits associated with systems that combine protonic-ceramic reactors to reform fuels and deliver lightly compressed H 2 (e.g., 5 bar) to an electrochemical compressor using a polymer electrolyte to compress to very high pressure. Full article
(This article belongs to the Special Issue Catalytic Membranes and Their Applications)
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Review

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24 pages, 5238 KiB  
Review
Progress and Perspectives on Ceramic Membranes for Solvent Recovery
by Senthilnathan Ruthusree, Subramanian Sundarrajan and Seeram Ramakrishna
Membranes 2019, 9(10), 128; https://doi.org/10.3390/membranes9100128 - 04 Oct 2019
Cited by 11 | Viewed by 4911
Abstract
With the increase in demand for commodities in the world, it is advisable to conserve resources. In the case of liquid wastes generated from pharmaceutical and petroleum industries, an unconventional solution is provided for the regeneration of solvents. However, this solvent recovery can [...] Read more.
With the increase in demand for commodities in the world, it is advisable to conserve resources. In the case of liquid wastes generated from pharmaceutical and petroleum industries, an unconventional solution is provided for the regeneration of solvents. However, this solvent recovery can be carried out using various efficient methods. Recently, Mixed Matrix Membranes (MMM) obtained by the addition of nanoparticles into a polymer matrix as reinforcements, or using a material with a well-defined inorganic network as a membrane like zeolite, silica based, Zeolite imidazolate frameworks (ZIFs) and Metal organic frameworks (MOFs), were explored for a solvent recovery process. These membranes possess characteristics such as high selectivity, flux and stability at various environmental conditions for the solvent recovery process. In this review, we have covered the polymer, nanocomposites, and ceramic membranes for solvent recovery through the pervaporation and organic solvent nanofiltration processes. The key challenges faced by the materials such as MOFs, zeolite, silica, zeolite and ZIFs when they are fabricated (through in situ synthesis or secondary growth process) as membranes and separation of solvents to explore for the solvent recovery process are reviewed. Full article
(This article belongs to the Special Issue Catalytic Membranes and Their Applications)
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