Journal of Membrane Science最新文献

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Bimetallic engineering in Ag/Zn-ZIF-8/Pebax mixed matrix membranes for enhanced CO2 separation 双金属工程在Ag/Zn-ZIF-8/Pebax混合基质膜中的应用
IF 9 1区 工程技术
Journal of Membrane Science Pub Date : 2026-03-01 Epub Date: 2025-12-08 DOI: 10.1016/j.memsci.2025.125046
Qian-Qian Li, Yang Li, Heng Mao, Yan-Mei Zhang, Qiu-Ying Zhang, Xin-Ru Chen, Zi-Cong Shan, Xian-Zhe Zhou, Li-Hao Xu, Zhi-Ping Zhao
{"title":"Bimetallic engineering in Ag/Zn-ZIF-8/Pebax mixed matrix membranes for enhanced CO2 separation","authors":"Qian-Qian Li,&nbsp;Yang Li,&nbsp;Heng Mao,&nbsp;Yan-Mei Zhang,&nbsp;Qiu-Ying Zhang,&nbsp;Xin-Ru Chen,&nbsp;Zi-Cong Shan,&nbsp;Xian-Zhe Zhou,&nbsp;Li-Hao Xu,&nbsp;Zhi-Ping Zhao","doi":"10.1016/j.memsci.2025.125046","DOIUrl":"10.1016/j.memsci.2025.125046","url":null,"abstract":"<div><div>Mixed matrix membranes (MMMs) have emerged as a critical platform for molecular separation, especially carbon capture from point-emission sources. In this study, a series of novel MMMs were fabricated by incorporating the bimetallic Ag/Zn-ZIF-8 nanoparticles into the poly (ether-block-amide) (Pebax) matrix for efficient CO<sub>2</sub>/N<sub>2</sub> separation. The SEM, EDS, XRD, FTIR, XPS, TGA, N<sub>2</sub> adsorption-desorption measurements were employed to elucidate the microstructures and physicochemical properties of the resultant nanoparticles and membranes. The bimetallic coordination-induced optimization modulated the inherent structure of ZIF-8 framework and enhanced CO<sub>2</sub> affinity, thereby forming the CO<sub>2</sub>-selective transport channels over N<sub>2</sub>. The incorporation of Ag <sup>+</sup> promoted the uniform dispersion of Ag/Zn-ZIF-8 nanoparticles in Pebax matrix, indicating the excellent polymer-filler interfacial compatibility. Impressively, the resulting membrane achieved the superior separation performance with a CO<sub>2</sub> permeability of 359 Barrer and a CO<sub>2</sub>/N<sub>2</sub> selectivity of 53, which were 2.5 and 1.4 times higher than that of the pristine Pebax membrane. Besides, the introduction of Ag/Zn-ZIF-8 nanoparticles enhanced the thermal and mechanical stability of the membrane, ensuring the potential for long-term operation. These findings herein advance the rational design and preparation of high-performance MMMs for sustainable carbon capture.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"741 ","pages":"Article 125046"},"PeriodicalIF":9.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145734324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Positively charged nanofiltration membrane with superior chemical stability for separation of dyes from salts 带正电的纳滤膜,具有优异的化学稳定性,用于染料和盐的分离
IF 9 1区 工程技术
Journal of Membrane Science Pub Date : 2026-03-01 Epub Date: 2025-12-31 DOI: 10.1016/j.memsci.2025.125106
Lei Han , Yining Hou , Ruihang Zhang , Yang Liu , Yan Xiong , Hao-Ran Zuo , Ming Duan
{"title":"Positively charged nanofiltration membrane with superior chemical stability for separation of dyes from salts","authors":"Lei Han ,&nbsp;Yining Hou ,&nbsp;Ruihang Zhang ,&nbsp;Yang Liu ,&nbsp;Yan Xiong ,&nbsp;Hao-Ran Zuo ,&nbsp;Ming Duan","doi":"10.1016/j.memsci.2025.125106","DOIUrl":"10.1016/j.memsci.2025.125106","url":null,"abstract":"<div><div>Membranes constructed via C–C bond formation exhibit superior chemical resistance compared to conventional polyamide (PA) membranes of which the performance often deteriorates under extreme pH conditions, making them promising candidates for dye wastewater treatment. In this study, we developed a novel positively charged nanofiltration (NF) membrane, denoted as PCNM, through redox-initiated interfacial free-radical polymerization. Quaternary ammonium groups were introduced to impart a stable positive charge, significantly enhancing dye separation performance. Membrane morphology and surface roughness were characterized using SEM and AFM. The PCNM membrane demonstrated exceptional rejection (&gt;99 %) for all tested cationic dyes, including Crystal violet (CV), Brilliant green (BG), Methylene blue (MEB), and Safranine O (SO) with an outstanding separation factor of 736.6 (CV over Na–SO<sub>4</sub>). Notably, it retained 99 % rejection against CV after 48-h exposure to 2000 ppm NaClO (96,000 ppm h), highlighting its outstanding chlorine resistance. Furthermore, the membrane exhibited remarkable pH stability, maintaining 99 % rejection against CV after 24-h immersion in 1 mol/L H<sub>2</sub>SO<sub>4</sub> and 1 mol/L NaOH, respectively. Consequently, this work presents a new strategy for fabricating high-performance positively charged NF membranes via interfacial free-radical polymerization, with significant potential for industrial dye wastewater treatment.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"742 ","pages":"Article 125106"},"PeriodicalIF":9.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145941163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Water permeability of ultrathin polyamide membranes: a computation study from molecular to macro scale 超薄聚酰胺膜的透水性:从分子到宏观尺度的计算研究
IF 9 1区 工程技术
Journal of Membrane Science Pub Date : 2026-03-01 Epub Date: 2026-01-07 DOI: 10.1016/j.memsci.2026.125128
Nasser AL-Hamdani , Giuseppe Costanzo , Giorgio Purpura , J. Luque Di Salvo , Giorgio De Luca
{"title":"Water permeability of ultrathin polyamide membranes: a computation study from molecular to macro scale","authors":"Nasser AL-Hamdani ,&nbsp;Giuseppe Costanzo ,&nbsp;Giorgio Purpura ,&nbsp;J. Luque Di Salvo ,&nbsp;Giorgio De Luca","doi":"10.1016/j.memsci.2026.125128","DOIUrl":"10.1016/j.memsci.2026.125128","url":null,"abstract":"<div><div>Many works focused on predicting water permeability in polyamides utilized in osmotic membranes, but few of them provide Multi-Scale (MS) calculations free from tunable parameters. In this paper, the phenomenological water permeability was calculated by a novel MS approach. Two biphasic models, water/FT-30 polyamide and dilute salt solution/polyamide, were simulated. Molecular Dynamics (MD) –based simulations were first performed to obtain the equilibrium water volume fraction and the water mass concentrations in the polymeric phase. Then the analytical solution of Fick's second law, provided by Penetration Theory, was used to obtain the water diffusion coefficient, exploiting the MD water mass concentrations. The computed water uptake was found to be in good agreement with the values available in the literature using both biphasic models. Moreover, the MS method yields water diffusion coefficients comparable with the smallest available theoretical and experimental values. Water permeability as well, is in agreement with the experimental values referring to ultrathin polyamide membranes, while the agreement is lost for membranes with thicker active layers. Therefore, the proposed MS methodology is reliable for predicting water permeability in this kind of promising membranes and for designing new ultrathin polymer membranes since it is based on atomistic-scale simulations. The strength of the method lies in the suitable assembly of advanced nanoscale simulations with the macroscopic Fick's transport equation.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"742 ","pages":"Article 125128"},"PeriodicalIF":9.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145941166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Vapor-phase crystalline transformation of metal-organic framework membranes for efficient hydrogen separation 用于高效氢分离的金属-有机骨架膜的气相结晶转变
IF 9 1区 工程技术
Journal of Membrane Science Pub Date : 2026-03-01 Epub Date: 2026-01-16 DOI: 10.1016/j.memsci.2026.125168
Pengcheng Su , Jiahao Zhang , Wufeng Wu , Yihao Xiao , Taotao Xu , Shibiao Wu , Yaqin Wang , Wanbin Li
{"title":"Vapor-phase crystalline transformation of metal-organic framework membranes for efficient hydrogen separation","authors":"Pengcheng Su ,&nbsp;Jiahao Zhang ,&nbsp;Wufeng Wu ,&nbsp;Yihao Xiao ,&nbsp;Taotao Xu ,&nbsp;Shibiao Wu ,&nbsp;Yaqin Wang ,&nbsp;Wanbin Li","doi":"10.1016/j.memsci.2026.125168","DOIUrl":"10.1016/j.memsci.2026.125168","url":null,"abstract":"<div><div>Metal−organic framework (MOF) membranes have shown dramatic potential in gas separation applications. However, there still great challenges exist in controlling gas transport pathways at atomic level to realize sharp molecular sieving. Here, we report vapor-phase crystalline transformation of ZIF-8 membranes by linker exchange strategy for precise hydrogen separation. Through exchanging parent 2-methylimidazole (MeIM) linkers by the incoming benzimidazole (BIM) linkers, ZIF-8 can transform into various crystal phases. The introduced bulky BIM with larger steric hindrance can narrow intrinsic apertures and suppress linker flexibility, thus enhancing the molecular sieving abilities. The resulting membranes show substantially improved separation performances with H<sub>2</sub>/CO<sub>2</sub>, H<sub>2</sub>/N<sub>2</sub> and H<sub>2</sub>/CH<sub>4</sub> selectivities up to 70.5, 89.2 and 101.2, respectively, accompanied by high H<sub>2</sub> permeance of 14.3 × 10<sup>−8</sup> mol m<sup>−2</sup> s<sup>−1</sup> Pa<sup>−1</sup> as well as good reproducibility, thermal stability and long-term sustainability. We envisage that this simple vapor-phase crystalline transformation strategy offers an alternative route to prepare high-performance membranes for precise separations and other various applications.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"742 ","pages":"Article 125168"},"PeriodicalIF":9.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Engineering zeolite nanosheets-polymer interface via thermal treatment: crosslinked-PI&RUB-15 membranes for efficient He recovery 工程沸石纳米片-聚合物界面通过热处理:交联- pi&rub -15膜高效He回收
IF 9 1区 工程技术
Journal of Membrane Science Pub Date : 2026-03-01 Epub Date: 2025-12-20 DOI: 10.1016/j.memsci.2025.125082
Yanmei Li , Wufeng Wu , Yali Zhao , Yanying Wei , Haihui Wang
{"title":"Engineering zeolite nanosheets-polymer interface via thermal treatment: crosslinked-PI&RUB-15 membranes for efficient He recovery","authors":"Yanmei Li ,&nbsp;Wufeng Wu ,&nbsp;Yali Zhao ,&nbsp;Yanying Wei ,&nbsp;Haihui Wang","doi":"10.1016/j.memsci.2025.125082","DOIUrl":"10.1016/j.memsci.2025.125082","url":null,"abstract":"<div><div>Interfacial incompatibility between inorganic fillers and polymer matrix remains a major challenge in developing high-performance zeolite-based mixed matrix membranes (MMMs), especially for the ones employing high-aspect-ratio two-dimensional (2D) nanosheets as fillers owing to the consequently enlarged interfacial area. Herein, a thermally induced crosslinking strategy is proposed to construct covalent Si–<em>O</em>–C linkages between RUB-15 nanosheets with abundant hydroxy groups and a polyimide (PI) matrix, effectively eliminating interfacial defects. Due to the improved interfacial compatibility, the membrane gas separation performance is significantly enhanced, presenting a He permeability of 87 Barrer with an impressive He/CH<sub>4</sub> selectivity of 357, ∼3.2 times as high as that before crosslinking. Furthermore, excellent separation stability is maintained over ten thermal cycling tests, demonstrating superior durability. This study presents a universal and efficient interfacial engineering strategy for fabrication of robust high-aspect-ratio 2D zeolite-based MMMs and highlights its significant potential in advancing next-generation gas separation technologies.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"741 ","pages":"Article 125082"},"PeriodicalIF":9.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Scale-up and field testing of nanoconfined ionic liquid membranes for CO2 capture from real flue gas 用于从真实烟气中捕获二氧化碳的纳米限制离子液体膜的放大和现场测试
IF 9 1区 工程技术
Journal of Membrane Science Pub Date : 2026-03-01 Epub Date: 2025-12-14 DOI: 10.1016/j.memsci.2025.125065
Fan Wang , Qiaobei Dong , Dinesh Kumar Behera , Weiwei Xu , Shiguang Li , Miao Yu
{"title":"Scale-up and field testing of nanoconfined ionic liquid membranes for CO2 capture from real flue gas","authors":"Fan Wang ,&nbsp;Qiaobei Dong ,&nbsp;Dinesh Kumar Behera ,&nbsp;Weiwei Xu ,&nbsp;Shiguang Li ,&nbsp;Miao Yu","doi":"10.1016/j.memsci.2025.125065","DOIUrl":"10.1016/j.memsci.2025.125065","url":null,"abstract":"<div><div>Nanoconfined ionic liquid (NCIL) membranes emerge as a highly promising candidate for gas separation due to the high-pressure durability, high gas selectivity, and ease of regeneration. However, the scalability and stability of liquid-based membranes for practical applications remain debatable. Herein, we demonstrated an industrially viable NCIL membrane for efficient CO<sub>2</sub> capture from real coal-fired flue gas, via conducting a field testing using 1000 cm<sup>2</sup> hollow fiber membrane modules at the National Carbon Capture Center (NCCC) in Wilsonville, AL, USA. Prior to the field testing, the gas separation performance was systematically evaluated using simulated flue gas to determine the optimal membrane structure and operation conditions. When using real flue gas in field testing, the membrane module demonstrated excellent and stable gas separation performance with stage cut for 8 days, with a log-mean CO<sub>2</sub> permeance of 525 GPU and CO<sub>2</sub>/N<sub>2</sub> selectivity of 488 at 70 °C. Apart from high CO<sub>2</sub> capture rate up to 47 %, the membrane was capable of elevating the CO<sub>2</sub> dry-basis purity from 10.4 % to 97 % in a single stage. The field-testing results represent the first successful module-level demonstration of NCIL membrane system and further validate its potential for industrial CO<sub>2</sub> separation. Furthermore, this scale-up process is expected to serve as a platform or template for scaling up other task-specific liquid-based (TSIL) membranes, while largely mitigating the effects of substrate quality.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"741 ","pages":"Article 125065"},"PeriodicalIF":9.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic control of tar and particulate matter in steam gasification of six typical biowastes using a catalyst-integrated SiC membrane reactor 催化集成SiC膜反应器协同控制六种典型生物垃圾蒸汽气化过程中的焦油和颗粒物
IF 9 1区 工程技术
Journal of Membrane Science Pub Date : 2026-03-01 Epub Date: 2025-12-27 DOI: 10.1016/j.memsci.2025.125093
Ajing Ding , Xing Fang , Jiaming Fei , Jingtao You , Quanhui Zhou , Fanghua Li , Yuting Zhang , Xuerui Wang , Lian Zhang , Qiaoqiao Zhou , Xuehong Gu
{"title":"Synergistic control of tar and particulate matter in steam gasification of six typical biowastes using a catalyst-integrated SiC membrane reactor","authors":"Ajing Ding ,&nbsp;Xing Fang ,&nbsp;Jiaming Fei ,&nbsp;Jingtao You ,&nbsp;Quanhui Zhou ,&nbsp;Fanghua Li ,&nbsp;Yuting Zhang ,&nbsp;Xuerui Wang ,&nbsp;Lian Zhang ,&nbsp;Qiaoqiao Zhou ,&nbsp;Xuehong Gu","doi":"10.1016/j.memsci.2025.125093","DOIUrl":"10.1016/j.memsci.2025.125093","url":null,"abstract":"<div><div>Clean syngas is valuable for fuel cells and high-value fuels/chemical synthesis; however, tar and particulate matter (PM) in syngas hinder its utilization. This study systematically investigated the steam gasification of six typical biowastes (covering agricultural, forestry, and aquatic categories) in an activated biochar catalyst-integrated SiC membrane reactor at 800 °C, focusing on the tar and PM formation and control mechanism. In control tests (without membrane, catalyst or steam), microalgae (MA) had the highest syngas tar content (395.6 g/m<sup>3</sup>), while herb residue (HR) showed the lowest (82.9 g/m<sup>3</sup>). MA also had the highest PM content (9.1 g/m<sup>3</sup>), followed by walnut shell (WS, 7.0 g/m<sup>3</sup>), whereas corncob (CC) and poplar wood (PW) had the lowest (1.2–1.4 g/m<sup>3</sup>), with PM content dependent more on coke from volatile polymerization than feedstock ash. In the catalyst-integrated membrane reactor, steam gasification of biowastes achieved tar conversion efficiencies of 88 %–96 % and PM removal efficiencies of 94 %–99 % across all biowastes, with excellent stability over 400 min. This performance should be attributed to the synergies among the three core components: the SiC membrane retained coarse PM to protect catalyst active sites; steam suppressed carbon deposition on both membrane and catalyst via coke reforming; and the biochar catalyst promoted tar cracking/reforming, followed by steam and then the membrane. These findings highlight the unique complementary roles of the integrated system, emphasizing the need to tailor gasification processes to biowaste characteristics for efficient clean syngas production.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"741 ","pages":"Article 125093"},"PeriodicalIF":9.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
“Fingerprint” of polymer for gas transport characteristics on the example of novel CO2-selective polynorbornene bearing highly polar side substituents 以含高极性侧取代基的新型co2选择性聚降冰片烯为例,聚合物气体输运特征的“指纹图谱”
IF 9 1区 工程技术
Journal of Membrane Science Pub Date : 2026-03-01 Epub Date: 2026-01-12 DOI: 10.1016/j.memsci.2026.125152
Diana A. Sadykova, Dmitry A. Alentiev, Dmitry A. Tsarev, Roman Yu. Nikiforov, Victoria E. Ryzhikh, Nikolay A. Belov, Alexander Yu. Alentiev, Maxim V. Bermeshev, Anton L. Maximov
{"title":"“Fingerprint” of polymer for gas transport characteristics on the example of novel CO2-selective polynorbornene bearing highly polar side substituents","authors":"Diana A. Sadykova,&nbsp;Dmitry A. Alentiev,&nbsp;Dmitry A. Tsarev,&nbsp;Roman Yu. Nikiforov,&nbsp;Victoria E. Ryzhikh,&nbsp;Nikolay A. Belov,&nbsp;Alexander Yu. Alentiev,&nbsp;Maxim V. Bermeshev,&nbsp;Anton L. Maximov","doi":"10.1016/j.memsci.2026.125152","DOIUrl":"10.1016/j.memsci.2026.125152","url":null,"abstract":"<div><div>High-molecular-weight metathesis polynorbornene containing triethylene glycol fragments linked to the main chain through a carboxyl group has been synthesized for the first time. Gas-transport parameters of the polynorbornene were investigated for the extended set of gases: H<sub>2</sub>, He, Ar, N<sub>2</sub>, O<sub>2</sub>, CO<sub>2</sub>, CH<sub>4</sub>, C<sub>2</sub>H<sub>2</sub>, C<sub>2</sub>H<sub>4</sub>, C<sub>2</sub>H<sub>6</sub>, C<sub>3</sub>H<sub>6</sub>, C<sub>3</sub>H<sub>8</sub>, CHF<sub>3</sub>, CH<sub>2</sub>F<sub>2</sub>, CF<sub>2</sub>Cl<sub>2</sub>, CHF<sub>2</sub>Cl, and NH<sub>3</sub>. The gas-transport properties of the polymer are stable during six months. The increased permeability coefficients of CO<sub>2</sub>, ethylene, acetylene, propylene, freons and ammonia are determined by their high solubility coefficients. The point for the polymer synthesized in the work is located higher than the 2008 Robeson upper bound in the selectivity-permeability diagram for CO<sub>2</sub>/N<sub>2</sub> gas pair, which arises from the specific interaction of CO<sub>2</sub> with the polymer. The analysis of specific interactions was carried out using correlation ratios of diffusion coefficients with the effective cross-section of gas molecules and solubility coefficients with Abraham parameters. Nonspecific and specific solubility and diffusion coefficients and their ratios for CO<sub>2</sub>, acetylene, ethylene, propylene, freons and ammonia were obtained. Based on the data obtained, the Abraham coefficients for the synthesized polymer (the “fingerprint” of the polymer) are calculated, which make it possible to estimate the solubility coefficient of gas or vapor for which the Abraham parameters are tabulated. The diffusion coefficients of gas or vapor for which the values of the effective cross-section of the molecule are tabulated can be estimated using the Teplyakov-Meares model, and, consequently, the permeability coefficient can be calculated. The proposed model has significant potential, however, given that the values obtained are calculated, the predicted gas transport parameters of the polymer are estimates.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"743 ","pages":"Article 125152"},"PeriodicalIF":9.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146001721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hollow fiber supported ionic liquid membrane contactors with enhanced stability by gel coating for selective Li+/Mg2+ separation 凝胶涂层增强稳定性的中空纤维支撑离子液体膜接触器用于Li+/Mg2+的选择性分离
IF 9 1区 工程技术
Journal of Membrane Science Pub Date : 2026-03-01 Epub Date: 2026-01-17 DOI: 10.1016/j.memsci.2026.125158
Jiahui Du , Bo Dong , Xiaohua Ma , Qingxia Zhu , Jianxin Li
{"title":"Hollow fiber supported ionic liquid membrane contactors with enhanced stability by gel coating for selective Li+/Mg2+ separation","authors":"Jiahui Du ,&nbsp;Bo Dong ,&nbsp;Xiaohua Ma ,&nbsp;Qingxia Zhu ,&nbsp;Jianxin Li","doi":"10.1016/j.memsci.2026.125158","DOIUrl":"10.1016/j.memsci.2026.125158","url":null,"abstract":"<div><div>Supported ionic liquid membrane (SILM) technology offers high efficiency and continuous operability for lithium extraction from salt-lake brines, yet achieving long-term stability remains its foremost unresolved challenge. Herein, a crown ether-based polyimide (PI) hollow fiber SILM with tributyl phosphate (TBP) and sodium bis(trifluoromethanesulfonyl)imide (NaNTf<sub>2</sub>) as organic phase was coated with a poly(acrylic acid) (PAA) gel layer to fabricate a PAA gel-SILM via thermally initiated polymerization. Then, a PAA gel-SILM contactor with an effective length of 100 mm, a diameter of 10 mm, and a packing density of 15 % was assembled to extract lithium from a simulated salt-lake brine by implementing counter-current flow. The results showed that the PAA gel-SILM contactor with a 2.0 μm gel coating exhibited a high Li<sup>+</sup> mass transfer rate of 0.538 μm s<sup>−1</sup> and a Li<sup>+</sup>/Mg<sup>2+</sup> separation factor of 28.35. Owing to the stabilizing hydrogen-bond network between the PAA coating and TBP/NaNTf<sub>2</sub>, the contactor maintained a Li<sup>+</sup>/Mg<sup>2+</sup> separation factor above 27.25 throughout 240 h of continuous operation. Finally, solid Li<sub>2</sub>CO<sub>3</sub> was successfully precipitated from the enriched solution using saturated Na<sub>2</sub>CO<sub>3</sub>, confirming the feasibility of the integrated process from selective extraction to product formation. In summary, this work provides a highly stable and continuous method for lithium extraction from salt lakes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"743 ","pages":"Article 125158"},"PeriodicalIF":9.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146001722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Poly(4-methyl-1-pentene) (PMP) membranes prepared by mixed solvent phase separation with superior omniphobicity for high-performance extracorporeal membrane oxygenation (ECMO) 混合溶剂相分离制备的聚(4-甲基-1-戊烯)(PMP)高效体外膜氧合(ECMO)膜
IF 9 1区 工程技术
Journal of Membrane Science Pub Date : 2026-03-01 Epub Date: 2025-12-04 DOI: 10.1016/j.memsci.2025.125008
Reham Al Nuaimi , Roshni Lilly Thankamony , Jean-Pierre Benjamin Boross de Levay , Bingbing Yuan , Mansour M. Aldehaiman , Jasmeen S. Merzaban , Zhiping Lai
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