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Membranes
Special Issues
Advanced Membranes for Gas Separations and CO2 Capture
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Advanced Membranes for Gas Separations and CO2 Capture

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

Deadline for manuscript submissions: closed (31 May 2022) | Viewed by 4390

Special Issue Editors

Dr. Leiqing Hu

E-Mail Website
Guest Editor
Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Buffalo, NY 14260, USA
Interests: MOFs; CO2 capture and seperation; hydrogen storage
Prof. Dr. Haiqing Lin

E-Mail Website
Co-Guest Editor
Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Buffalo, NY 14260, USA
Interests: novel membrane materials for CO2 capture from flue gas and syngas; antifouling membranes for water purification; understanding of polymer struc-ture/property correlations in thin films
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Qingping Xin

E-Mail Website
Co-Guest Editor
State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
Interests: low dimensional materials; gas separation membrane
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We cordially invite you to submit your research work or review articles to this special Issue of “Advanced Membranes for Gas Separations and CO2 Capture”. With a small footprint, high energy efficiency, and simplicity of operation, membrane technology has been recognized as an environmental friendly and effective approach for industrial gas separations and CO2 capture from power plants. Nevertheless, advanced membrane materials are imperative to achieve superior gas separation efficiencies and reduce the capital and energy cost.

Gas separation membranes often suffer a ubiquitous trade-off between gas permeability and selectivity; namely, highly permeable membranes exhibit low selectivity and vice versa. The purpose of this Special Issue is to publish recent advances in membrane materials with both high permeability and high selectivity. The topics of interests include, but are not limited to, novel membrane materials (polymer, metal organic frameworks, carbon materials, zeolites, covalent organic frameworks, and mixed matrix materials) for various gas pair separation (including H2/CO2, CO2/N2, CO2/CH4, O2/N2, and olefin/paraffin), preparation and characterization of thin-film composite membranes or hollow fiber membranes, simulations and modellings of membrane performance and processes, etc.

We are looking forward to receive your outstanding work for this Special Issue.

Prof. Dr. Haiqing Lin
Prof. Dr. Qingping Xin
Dr. Leiqing Hu
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 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

  • membranes
  • gas separation
  • CO2 capture
  • polymers
  • mixed matrix materials
  • facilitated transport membranes
  • carbon materials
  • modellings

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Published Papers (1 paper)

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Research

15 pages, 3458 KiB  
Article
Preparation of Pebax 1657/MAF-7 Mixed Matrix Membranes with Enhanced CO2/N2 Separation by Active Site of Triazole Ligand
by Xingqian Wang, Yuping Zhang, Xinwei Chen, Yifei Wang, Mingliang He, Yongjiang Shan, Yuqin Li, Fei Zhang, Xiangshu Chen and Hidetoshi Kita
Membranes 2022, 12(8), 786; https://doi.org/10.3390/membranes12080786 - 16 Aug 2022
Cited by 7 | Viewed by 3649
Abstract
Fillers play a critical role in the performance of mixed matrix membranes (MMMs). Microporous metal azolate frameworks (MAFs) are a subclass material of metal–organic frameworks (MOFs). Due to the uncoordinated nitrogen of the organic ligands, MAF-7 (SOD-[Zn(mtz)2], Hmtz = 3-methyl-1,2,4-triazole, window: [...] Read more.
Fillers play a critical role in the performance of mixed matrix membranes (MMMs). Microporous metal azolate frameworks (MAFs) are a subclass material of metal–organic frameworks (MOFs). Due to the uncoordinated nitrogen of the organic ligands, MAF-7 (SOD-[Zn(mtz)2], Hmtz = 3-methyl-1,2,4-triazole, window: d = 0.34 nm) shows excellent CO2 adsorption performance. In this work, Pebax 1657/MAF-7 MMMs were prepared by a sample solution casting method with MAF-7 particles as fillers for the first time. By means of X-ray diffraction (XRD), scanning electron microscope (SEM), infrared radiation (IR), and thermogravimetry (TG), the compositional and structural properties of the mixed matrix membrane with different filler content were analyzed. The results show that the compatibility of MAF-7 and Pebax is good with a filler content of 5 wt.%. The pure gas testing showed that mixed matrix membrane has a high ideal CO2/N2 selectivity of 124.84 together with a better CO2 permeability of 76.15 Barrer with the optimized filler content of 5 wt.%. The obtained membrane showed 323.04% enhancement in selectivity of CO2/N2 and 27.74% increase in the permeability of CO2 compared to the pristine membrane at 25 °C and 3 bar. The excellent separation performance may be due to the ligands that can afford a Lewis base active site for CO2 binding with the uniform dispersion of MAF-7 particles in Pebax and the favorable interface compatibility. The obtained membrane overcomes the Robeson’s upper bound in 2008 for CO2/N2 separation. This work provides a new strategy by utilizing MAFs as fillers with triazole ligand to enhance the gas separation performance of mixed matrix membranes. Full article
(This article belongs to the Special Issue Advanced Membranes for Gas Separations and CO2 Capture)
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