Membranes and Membrane Technologies最新文献

Mixed Matrix Membranes Based on Sodium Alginate Modified with Microwaved-Synthesized Chromium Oxide for Enhanced Pervaporation Dehydration of Isopropanol 微波合成氧化铬改性海藻酸钠混合基质膜强化异丙醇渗透蒸发脱水

IF 1.2

Membranes and Membrane Technologies Pub Date : 2026-08-27 DOI: 10.1134/S251775162660007X

M. Dmitrenko, A. Mikulan, P. Kolonitskii, A. Kuzminova, A. Selyutin, A. Mazur, A. Penkova

{"title":"Mixed Matrix Membranes Based on Sodium Alginate Modified with Microwaved-Synthesized Chromium Oxide for Enhanced Pervaporation Dehydration of Isopropanol","authors":"M. Dmitrenko, A. Mikulan, P. Kolonitskii, A. Kuzminova, A. Selyutin, A. Mazur, A. Penkova","doi":"10.1134/S251775162660007X","DOIUrl":"10.1134/S251775162660007X","url":null,"abstract":"This study reports the development of mixed matrix membranes (MMMs) from sodium alginate (SA) modified with microwaved-synthesized Cr2O3 microparticles for enhanced pervaporation dehydration of isopropanol. The optimal chromium oxide content within the SA matrix was identified, and cross-linking with CaCl2 of membrane based on optimal SA/Cr2O3 (5%) composite was performed to improve performance in separating dilute mixtures. Comprehensive characterization using FTIR, NMR, XPS, XRD, SEM, AFM, thermogravimetric analysis, and contact angle measurements was carried out to study the modifier and to confirm membrane structural and surface modifications. Incorporation of the optimal 5 wt % Cr2O3 concentration into SA membrane, combined with cross-linking, resulted in a twofold increase in permeation flux (0.22–0.47 kg/(m2 h)) while maintaining high selectivity (7326-2331 separation factor, constant 99.9 wt % water in the permeate) compared to the pristine SA membrane in pervaporation dehydration of isopropanol with up to 30 wt % water. The membrane’s performance is further highlighted by a PSI value of 1586–1087 kg/(m2 h), indicating its high effectiveness. These findings demonstrate the potential of the developed membranes for efficient dehydration processes.","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"8 2","pages":"68 - 83"},"PeriodicalIF":1.2,"publicationDate":"2026-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148823142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Membrane Properties at Low Concentrations of Divalent Draw Solutions Using Hollow Fibre Forward Osmosis Membrane 中空纤维正向渗透膜在低浓度二价溶液中的性能评价

IF 1.2

Membranes and Membrane Technologies Pub Date : 2026-08-27 DOI: 10.1134/S2517751625600013

Zayana S. Nazar, N. K. Shafna, B. Sulthana, Sameer Sayyad, Akshay D. Shende

引用次数: 0

Development and Electrochemical Characteristics of Gel Polymer Electrolytes Based on Nafion-Type Membranes with Lithium–Cerium(IV) Orthophosphate Additive 正磷酸锂-铈（IV）钠离子型膜凝胶聚合物电解质的研制及其电化学特性

IF 1.2

Membranes and Membrane Technologies Pub Date : 2026-08-27 DOI: 10.1134/S2517751626600378

A. O. Bedarkova, D. Yu. Voropaeva, D. N. Vasilyeva, M. R. Protsenko, T. O. Kozlova

{"title":"Development and Electrochemical Characteristics of Gel Polymer Electrolytes Based on Nafion-Type Membranes with Lithium–Cerium(IV) Orthophosphate Additive","authors":"A. O. Bedarkova, D. Yu. Voropaeva, D. N. Vasilyeva, M. R. Protsenko, T. O. Kozlova","doi":"10.1134/S2517751626600378","DOIUrl":"10.1134/S2517751626600378","url":null,"abstract":"A composite gel polymer electrolyte for lithium metal batteries has been developed based on an MF-4SC membrane modified with double lithium-cerium(IV) phosphate, LiCe2(PO4)3. The introduction of ≈0.5 wt % of inorganic filler into the polymer matrix does not alter its chemical structure but leads to improved functional properties. The composite electrolyte based on the MF-4SC membrane and the obtained inorganic filler, plasticized with a mixture of ethylene carbonate and propylene carbonate, exhibits an ionic conductivity of 0.42 mS/cm (at 30°C) and a lithium cation transference number of ≈0.66. The electrolytes have a similar oxidative stability limit (~4.3 V); however, the composite is characterized by a more controlled decomposition process at high potentials. The key advantage is the enhancement of interfacial stability: in a symmetric Li|Li cell, the composite electrolyte suppresses voltage failures associated with dendrite growth, demonstrating potential for the creation of safe and durable lithium metal batteries.","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"8 2","pages":"59 - 67"},"PeriodicalIF":1.2,"publicationDate":"2026-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148823144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hidden Asymmetry of Homogeneous Membranes: Role of Reinforcing Fabric in Forming Electrochemical Behavior 均质膜的隐性不对称性：增强织物在形成电化学行为中的作用

IF 1.2

Membranes and Membrane Technologies Pub Date : 2026-08-27 DOI: 10.1134/S2517751626600391

V. D. Ruleva, N. D. Pismenskaya, V. V. Nikonenko

{"title":"Hidden Asymmetry of Homogeneous Membranes: Role of Reinforcing Fabric in Forming Electrochemical Behavior","authors":"V. D. Ruleva, N. D. Pismenskaya, V. V. Nikonenko","doi":"10.1134/S2517751626600391","DOIUrl":"10.1134/S2517751626600391","url":null,"abstract":"The presence of reinforcing fabric in homogeneous ion-exchange membranes leads to the emergence of their structural asymmetry, which is usually not taken into account during membrane characterization and their practical application. This work investigates the influence of such asymmetry on the current–voltage characteristics and chronopotentiograms of three commercial cation-exchange membranes (Nafion® N438, CJMC-3, and SYMC-2). Optical microscopy revealed that all membranes are characterized by an asymmetric arrangement of the reinforcing fabric, which is shifted toward one of the surfaces. The displacement of the fabric leads to differences in the surface microrelief of the membranes, on which protrusions of fabric threads or waviness can be observed. It is shown that this leads to significant asymmetry of electrochemical properties: when the membrane orientation relative to the desalination chamber is changed, differences are observed in the limiting current value (up to 7% for CJMC-3), the length of the limiting current plateau, the amplitude and period of potential oscillations on chronopotentiograms, as well as in the transition time. It was found that changing the orientation of the Nafion® N438 membrane at a current density slightly exceeding the limiting value can lead to a twofold reduction in the reduced potential drop, i.e., to a significant reduction in energy consumption. The obtained results show that structural asymmetry of membranes is an important factor affecting their electrochemical behavior and should be taken into account both in the interpretation of experimental data and in the application of membranes in electrodialysis devices.","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"8 2","pages":"84 - 99"},"PeriodicalIF":1.2,"publicationDate":"2026-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148823143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pd/HAp/Hastelloy Composite Membrane with Enhanced Hydrogen Permeability and Stability for Industrial Applications Pd/HAp/哈氏合金复合膜在工业应用中的透氢性和稳定性增强

IF 1.2

Membranes and Membrane Technologies Pub Date : 2026-08-27 DOI: 10.1134/S2517751626600287

M. Papezhuk, P. Pushankina, A. Simonov, O. Frolova, I. Petriev

{"title":"Pd/HAp/Hastelloy Composite Membrane with Enhanced Hydrogen Permeability and Stability for Industrial Applications","authors":"M. Papezhuk, P. Pushankina, A. Simonov, O. Frolova, I. Petriev","doi":"10.1134/S2517751626600287","DOIUrl":"10.1134/S2517751626600287","url":null,"abstract":"A major challenge in the current energy transition toward environmentally benign energy carriers such as hydrogen is the complexity and low productivity of existing production routes. The development of high-performance membrane reactors and H2-selective membranes for such systems is one of the most promising ways to address this problem. This work considers the scalingup of composite Pd membranes for application in industrial hydrogen separation and production processes. This paper examines the potential for scaling up composite Pd membranes for use in industrial hydrogen separation and production processes. A new approach to producing composite membranes has been developed, involving the formation of a selective Pd layer by chemical deposition, which is more technologically advanced, simpler, and suitable for scaling up and industrial production. A two-step hydroxyapatite deposition method, involving filling the large pores of the substrate and forming a smooth ceramic surface with minimal porosity, yielded a thin, uniform, defect-free selective Pd layer with high adhesion and effectively resolved the interdiffusion issue, ensuring membrane structural stability. By reducing the thickness of the selective layer and, consequently, shortening the diffusion path of atomic hydrogen, the developed Pd/HAp/Hastelloy X composite membrane is capable of increasing hydrogen flux by more than 20 times compared to a bulk Pd membrane. Stability over 100 h of testing at temperatures of 200–400°C and high hydrogen flow values comparable to analogues and even exceeding them were also demonstrated. The selectivity of the composite membrane (>1500) points to a dense selective layer with no detectable defects. The obtained results confirm the potential of the developed method for producing composite Pd membranes and the possibility of their use in steam reforming reactors in the processes of hydrogen production and purification.","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"8 2","pages":"111 - 119"},"PeriodicalIF":1.2,"publicationDate":"2026-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148823145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multilayer Membranes Based on MK-40 for Electrodialysis Separation of Ions 基于MK-40的多层膜电渗析分离离子

IF 1.6

Membranes and Membrane Technologies Pub Date : 2026-06-01 DOI: 10.1134/S2517751626600147

P. A. Yurova, I. A. Stenina, A. B. Yaroslavtsev

引用次数: 0

Oxygen Permeation Behavior of One-Pot Synthesized BaCe0.5Fe0.5O3 – δ Composite Membranes 一锅合成BaCe0.5Fe0.5O3 - δ复合膜的氧渗透行为

IF 1.6

Membranes and Membrane Technologies Pub Date : 2026-06-01 DOI: 10.1134/S2517751626600044

P. S. Kuznetsova, L. R. Tarutina, G. K. Vdovin, D. A. Medvedev

{"title":"Oxygen Permeation Behavior of One-Pot Synthesized BaCe0.5Fe0.5O3 – δ Composite Membranes","authors":"P. S. Kuznetsova, L. R. Tarutina, G. K. Vdovin, D. A. Medvedev","doi":"10.1134/S2517751626600044","DOIUrl":"10.1134/S2517751626600044","url":null,"abstract":"Mixed ionic-electronic conductors (MIECs) are essential for high-temperature electrochemical devices, such as solid oxide fuel cells and oxygen separation membranes. While it is difficult to optimize both ionic and electronic transport simultaneously in single-phase materials, composite systems offer a promising strategy by separating these functionalities into distinct and percolating phases. This study reports the functional properties of the nominal composition BaCe0.5Fe0.5O3 – δ (BCF), which forms a dual-phase composite due to the mismatch in ionic radii between the Ce4+ and Fe3+/4+ cations. The BCF material was synthesized via a single-step citrate-nitrate combustion route to ensure a homogeneous dual microstructure state consisting of an orthorhombic BaCeO3-based phase and a cubic BaFeO3-based phase. This was confirmed by Rietveld refinement and electron microscopy analyzes. Electrical characterization revealed moderate total conductivity at 300–750°C, which did not exceed 1 S cm–1. Despite its restricted electronic conductivity, the composite exhibited acceptable oxygen permeation fluxes, reaching 2.0 × 10–3 mL min–1 cm–2 at 750°C for a 650 µm-thick membrane. The calculated specific oxygen permeation flux exhibited thermally activated behavior with an activation energy (~0.75 eV) comparable to that of similar iron-containing perovskite systems. A comparative analysis with literature data showed that the BCF performance is acceptable for the 600–750°C range. These results highlight the effectiveness of the in situ formed composite, in which the Ce-rich phase facilitates ionic transport and compensates for the moderate electronic conductivity of the Fe-rich phase. Consequently, the BCF composite can be considered a promising material for oxygen transport membranes.","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"8 1","pages":"50 - 58"},"PeriodicalIF":1.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148060817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polyaniline Modified Anion-Exсhange Membranes for Sulfuric Acid and Nickel Sulfate Separation by Donnan Dialysis Method 聚苯胺改性阴离子交换膜在硫酸和硫酸镍分离中的应用

IF 1.6

Membranes and Membrane Technologies Pub Date : 2026-06-01 DOI: 10.1134/S2517751626600135

N. V. Loza, N. O. Kovalchuk, N. A. Kutenko, Ju. S. Loza

{"title":"Polyaniline Modified Anion-Exсhange Membranes for Sulfuric Acid and Nickel Sulfate Separation by Donnan Dialysis Method","authors":"N. V. Loza, N. O. Kovalchuk, N. A. Kutenko, Ju. S. Loza","doi":"10.1134/S2517751626600135","DOIUrl":"10.1134/S2517751626600135","url":null,"abstract":"A series of composite ion-exchange membranes based on the heterogeneous anion-exchange strongly basic membrane MA-41 and polyaniline was obtained via oxidative polymerization of aniline. This was achieved through sequential diffusion of an oxidizer (ammonium persulfate) and a monomer (aniline sulfate) through the membrane into water with varying contact times with the monomer solution (from 2 to 6 h). The penetration depth of the modifier into the membranes was determined to be independent of the polyaniline synthesis time and to be 30–35% of the depth of the samples. Modification of the membranes with polyaniline was found to reduce their diffusion permeability in a sulfuric acid solution of up to 20%, while increasing this characteristic in a nickel sulfate solution by 35–65% compared to the original membrane. At the same time, polyaniline modification leads to a decrease in specific conductivity, and this effect is independent of the modification duration. Asymmetry was observed in the current–voltage curves of the modified membranes, depending on the orientation of the modified surface relative to the counterion flow. Dialysis separation of sulfuric acid and nickel sulfate solutions was performed using the original MA-41 membrane and modified samples with polyaniline synthesis times of 2 and 6 h. The results showed that polyaniline influences both the acid transfer rate and the magnitude and direction of water flow during dialysis.","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"8 1","pages":"24 - 36"},"PeriodicalIF":1.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148060831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Formation of Asymmetrical Membranes Based on Commercial Polyetherimide-Siloxane Siltem 商用聚醚酰亚胺-硅氧烷体系不对称膜的形成

IF 1.6

Membranes and Membrane Technologies Pub Date : 2026-06-01 DOI: 10.1134/S2517751625600980

O. L. Grishkov, T. S. Anokhina, R. Yu. Nikiforov, N. A. Belov, A. Yu. Alent’ev, I. L. Borisov, S. Banerjee, S. D. Bazhenov

{"title":"Formation of Asymmetrical Membranes Based on Commercial Polyetherimide-Siloxane Siltem","authors":"O. L. Grishkov, T. S. Anokhina, R. Yu. Nikiforov, N. A. Belov, A. Yu. Alent’ev, I. L. Borisov, S. Banerjee, S. D. Bazhenov","doi":"10.1134/S2517751625600980","DOIUrl":"10.1134/S2517751625600980","url":null,"abstract":"In this work, asymmetric flat-sheet membranes based on the commercial polyetherimide–siloxane copolymer Siltem, whose gas permeability is one order of magnitude higher than that of polyetherimide Ultem 1000, were first obtained. Based on the solubility analysis and Hansen solubility parameters, N‑methyl-2-pyrrolidone was selected as the principal solvent, as it provides the best thermodynamic compatibility with both polymers. It was shown that Siltem STM1700 is soluble in a significantly wider range of organic solvents, including tetrahydrofuran and N-butylpyrrolidone. Furthermore, solutions of Siltem in N‑methyl-2-pyrrolidone exhibit substantially lower viscosity compared to those of Ultem, which allows the preparation and processing of polymer solutions at concentrations up to 36 wt %. Asymmetric flat-sheet membranes were fabricated by the phase inversion method, wherein the polymer solution was brought into contact with a nonsolvent coagulation medium. The obtained membranes were characterized by scanning electron microscopy, and their mechanical properties were investigated. To develop an enhanced porous structure in the asymmetric flat-sheet membranes based on commercial polyetherimides, tetrahydrofuran was introduced into the casting solution. The addition of tetrahydrofuran to the casting solution resulted in improved mechanical characteristics of the membranes: the elastic modulus increased by a factor of 2 to 2.5, and the tensile strength also increased.","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"8 1","pages":"9 - 23"},"PeriodicalIF":1.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148060832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Competing Transport of Citric and Acetic Acids through Commercial and Modified Ralex AMH Anion-Exchange Membrane 柠檬酸和乙酸在商业和改性Ralex AMH阴离子交换膜上的竞争运输

IF 1.6

Membranes and Membrane Technologies Pub Date : 2026-06-01 DOI: 10.1134/S2517751625600773

T. V. Karpenko, V. V. Shramenko, I. P. Averyanov, D. A. Chuprynina, N. V. Sheldeshov

{"title":"Competing Transport of Citric and Acetic Acids through Commercial and Modified Ralex AMH Anion-Exchange Membrane","authors":"T. V. Karpenko, V. V. Shramenko, I. P. Averyanov, D. A. Chuprynina, N. V. Sheldeshov","doi":"10.1134/S2517751625600773","DOIUrl":"10.1134/S2517751625600773","url":null,"abstract":"This work investigates the competitive transport of acetic and citric acids from model solutions containing both salt and molecular forms of the acids. The study examines two membrane systems: a Ralex AMH heterogeneous membrane with a total concentration of 0.1 mol-eq/L of each acid and a Ralex AMH/MF-4SK bilayer membrane with a total concentration of 0.5 mol-eq/L of each acid. Experiments were conducted at solution pH values of 1.0, 4.8, and 9.0. The separation of organic acids by electromembrane processes is a key challenge when these acids are obtained from mixtures. The results show that electrodialysis extraction of citric acid from solution containing 0.1 mol-eq/L of organic acid ions and molecules, using Ralex AMH membrane at current density of about 3 A/dm2 and pH 9.0, yields a specific selective permeability coefficient PCit/Ac equal to 4 for citric acid compared to acetic acid. Electrodialysis removal of acetic acid from solution containing 0.5 mol-eq/L of organic acid ions and molecules using the Ralex AMH/MF-4SK membrane at current density of 0.17 A/dm2 and pH 9.0 results in PCit/Ac value of 0.025.","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"8 1","pages":"37 - 49"},"PeriodicalIF":1.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148060819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0