A5038699477- Membrane Separation and Gas Transport
- Covalent Organic Framework Applications
- Membrane Separation Technologies
- Graphene research and applications
- Metal-Organic Frameworks: Synthesis and Applications
- Muon and positron interactions and applications
- Fuel Cells and Related Materials
- Carbon Dioxide Capture Technologies
- Synthesis and properties of polymers
- Advanced Battery Materials and Technologies
- Catalysts for Methane Reforming
- Glass properties and applications
- Adsorption, diffusion, and thermodynamic properties of materials
- Thermal and Kinetic Analysis
- Extraction and Separation Processes
Dalian University
2021-2025
Dalian University of Technology
2021-2025
Centre National de la Recherche Scientifique
1994
Abstract High-performance membranes exceeding the conventional permeability-selectivity upper bound are attractive for advanced gas separations. In context microporous polymers have gained increasing attention owing to their exceptional permeability, which, however, demonstrate a moderate selectivity unfavorable separating similarly sized mixtures. Here we report an approach designing polymeric molecular sieve via multi-covalent-crosslinking of blended bromomethyl polymer intrinsic...
To confront the energy consumption, high performance membrane materials are urgently needed. Carbon molecular sieve (CMS) membranes exhibit superior capability in separating gas mixtures efficiently. However, it remains a grand challenge to precisely tune pore size and distribution of CMS further improve their sieving properties. Herein, we report an approach finely modulating structure by using reactive Al(CH3)3 situ defluorinate polymer precursor form Al-Fx(CH3)3-x matrix, which is...
Abstract Polymer‐based membrane technology holds immense promise for CO 2 separation. However, it faces persistent challenges, including the high pressure‐induced plasticization and permeability‐selectivity trade‐offs, which significantly hinder development of polymeric membranes. To tackle this issue, we synthesized a novel polyimide 6FDA‐DAT:DABA(6FDD) containing triptycene carboxylic groups. Upon de‐carboxylation induced cross‐linking, demonstrated simultaneous enhancement gas...
Membrane separation technology provides an alternative to traditional thermally driven separations, owing its advantages including low cost, energy-savings and environmental friendliness. However, the current membrane for gas separations using polymeric materials suffers challenge of permeability-selectivity trade-offs. To overcome this hurdle, high-separation performance hybrid membranes are developed herein microporous UiO-66-(OH)2 PIM-1. Due stable interfacial hydrogen bonding, MOF...
Membrane separation technology provides an effective alternative to mitigate the massive carbon emission with high capture productivity and efficiency. In context of operating membranes under CO2 pressures allows increased reduced gas compression cost, which, however, often leads induced plasticization, a key hurdle for current membranes. this review, we reviewed latest development anti-plasticization resistance, potentially suited operation feed streams. Specifically, performance polymeric...
Two-dimensional (2D) nanomaterials, due to their high aspect ratio and specific surface area, which provide a more tortuous pathway for larger gas molecules, are frequently used in membrane separation. However, mixed-matrix membranes (MMMs), the area of 2D fillers can increase transport resistance, thereby reducing permeability molecules. In this work, we combine boron nitride nanosheets (BNNS) with ZIF-8 nanoparticles develop novel material, ZIF-8@BNNS, improve both CO2 CO2/N2 selectivity....
Mixed matrix membranes (MMMs) generally have some fatal defects, such as poor compatibility between the two phases leading to non-selective pores. In this work, PIM-1 was chosen polymer matrix, and UiO-66 modified with amidoxime (UiO-66-AO) used filler prepare MMMs. MMMs, amino hydroxyl groups on UO-66-AO form a rich hydrogen bond network N O atoms in chain improve filler. addition, selective adsorption of CO2 by group can promote transport membrane, which enhances gas selectivity. The...
Polymers of intrinsic microporosity (PIMs) has seen a growing role in gas separation membranes. Further exploitation performance PIM membranes and overcoming their persistent challenge plasticization are urgently demanded. To address these issues, exemplified PIM-1 is synthesized hydrolyzed to form carboxylated PIM-COOH polymers, followed by esterification using propylene glycol prepare monoesterified PIM, which finally thermally ester-crosslinked at various temperatures time. The 300 oC-8 h...
Polymers of intrinsic microporosity (PIMs) have seen a growing role in gas separation membranes. Further exploitation performance PIM membranes and overcoming their persistent challenge plasticization are urgently demanded. To address these issues, exemplified PIM-1 is synthesized hydrolyzed to form carboxylated PIM-COOH polymers, followed by esterification using propylene glycol prepare monoesterified PIM, which finally thermally ester-crosslinked at various temperatures time. The 300 oC-8...
Abstract Highly permeable and selective membranes that exceed the conventional permeability-selectivity upper bound are attractive for energy-efficient gas separations. In context microporous polymers have gained increasing attention owing to their high porosity exceptional permeability. However, moderate selectivity of caused by inherent broad distribution cavities leads a loss valuable products, making them unfavorable separating similarly sized mixtures. Here we report new approach...