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Wilkner K, Mücke R, Baumann S, Meulenberg WA, Guillon O. Sensitivity of Material, Microstructure and Operational Parameters on the Performance of Asymmetric Oxygen Transport Membranes: Guidance from Modeling. MEMBRANES 2022; 12:membranes12060614. [PMID: 35736321 PMCID: PMC9230686 DOI: 10.3390/membranes12060614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/09/2022] [Accepted: 06/11/2022] [Indexed: 02/04/2023]
Abstract
Oxygen transport membranes can enable a wide range of efficient energy and industrial applications. One goal of development is to maximize the performance by the improvement of the material, microstructural properties and operational conditions. However, the complexity of the transportation processes taking place in such commonly asymmetric membranes impedes the identification of the parameters to improve them. In this work, we present a sensitivity study that allows identification of these parameters. It is based on a 1D transport model that includes surface exchange, ionic and electronic transport inside the dense membrane, as well as binary diffusion, Knudsen diffusion and viscous flux inside the porous support. A support limitation factor is defined and its dependency on the membrane conductivity is shown. For materials with very high ambipolar conductivity the transport is limited by the porous support (in particular the pore tortuosity), whereas for materials with low ambipolar conductivity the transport is limited by the dense membrane. Moreover, the influence of total pressure and related oxygen partial pressures in the gas phase at the membrane's surfaces was revealed to be significant, which has been neglected so far in permeation test setups reported in the literature. In addition, the accuracy of each parameter's experimental determination is discussed. The model is well-suited to guiding experimentalists in developing high-performance gas separation membranes.
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Affiliation(s)
- Kai Wilkner
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), D-52425 Jülich, Germany; (R.M.); (S.B.); (W.A.M.); (O.G.)
- Jülich Aachen Research Alliance: JARA-Energy, D-52425 Jülich, Germany
- Department of Ceramics and Refractory Materials, Institute of Mineral Engineering, RWTH Aachen University, D-52064 Aachen, Germany
- Correspondence:
| | - Robert Mücke
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), D-52425 Jülich, Germany; (R.M.); (S.B.); (W.A.M.); (O.G.)
- Jülich Aachen Research Alliance: JARA-Energy, D-52425 Jülich, Germany
| | - Stefan Baumann
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), D-52425 Jülich, Germany; (R.M.); (S.B.); (W.A.M.); (O.G.)
- Jülich Aachen Research Alliance: JARA-Energy, D-52425 Jülich, Germany
| | - Wilhelm Albert Meulenberg
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), D-52425 Jülich, Germany; (R.M.); (S.B.); (W.A.M.); (O.G.)
- Jülich Aachen Research Alliance: JARA-Energy, D-52425 Jülich, Germany
- Inorganic Membranes, Faculty of Science and Technology, University of Twente, 7500 AE Enschede, The Netherlands
| | - Olivier Guillon
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), D-52425 Jülich, Germany; (R.M.); (S.B.); (W.A.M.); (O.G.)
- Jülich Aachen Research Alliance: JARA-Energy, D-52425 Jülich, Germany
- Department of Ceramics and Refractory Materials, Institute of Mineral Engineering, RWTH Aachen University, D-52064 Aachen, Germany
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Cai L, Cao Z, Zhu X, Yang W. Effects of catalysts on water decomposition and hydrogen oxidation reactions in oxygen transport membrane reactors. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119394] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Cai L, Wang J, Zhu X, Yang W. Recent Progress on Mixed Conducting Oxygen Transport Membrane Reactors for Water Splitting Reaction. ACTA CHIMICA SINICA 2021. [DOI: 10.6023/a20120561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Mohd Shafie ZMH, Ahmad AL, Low SC, Rode S, Belaissaoui B. Lithium chloride (LiCl)-modified polyethersulfone (PES) substrate surface pore architectures on thin poly(dimethylsiloxane) (PDMS) dense layer formation and the composite membrane's performance in gas separation. RSC Adv 2020; 10:9500-9511. [PMID: 35497224 PMCID: PMC9050143 DOI: 10.1039/d0ra00045k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 02/18/2020] [Indexed: 11/21/2022] Open
Abstract
The use of pore forming agents has been notable for improving the water flux in a water-based separation membrane but are rarely being studied as a methodology to influence the substrate's surface architectures for composite membrane fabrication in gas separation. In this study, the influence of lithium chloride (LiCl) on the surface pore architectures and hence, the gas permeance, has been studied in both bare and composite forms with poly(dimethylsiloxane) (PDMS). 1-4 wt% of LiCl was mixed with the dope solution of PES/NMP in the ratio 0.19 and was casted via the dry-wet phase inversion method. Bare substrates were noted to possess increasingly larger surface pore sizes but at a diminishing surface pore density with maximum surface porosity at 2 wt% LiCl. The permeances were, however, significantly reduced with the increase in the LiCl content from 105 300 to 4300 GPU for N2 gas, presumably due to the thicker skin layer. Nevertheless, the porous surface morphology was confirmed and exhibited Knudsen selectivity with a CO2/N2 selectivity of about 0.8, signifying minimal gas flow resistance by the substrates. Upon coating with a similar amount of thin PDMS layer, the composite permeances retain the same trend with values from 361.9 GPU for 0 wt% LiCl substrates to 68.8 GPU for 4 wt% LiCl substrates for CO2 gas at a consistent selectivity of about 14. As the PDMS layer of the same volumes were used and no significant difference in the coating thickness was noted, the mixed influence of pore intrusion and lateral diffusion is hypothesised at the substrate-coating interface owing to the different surface pore architectures of the substrates.
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Affiliation(s)
- Zulfida Mohamad Hafis Mohd Shafie
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia 14300 Nibong Tebal Penang Malaysia .,Laboratoire Réactions & Génie des Procédés (LRGP) (UMR 7274) ENSIC, Université de Lorraine 1 Rue Grandville 54001 Nancy France
| | - Abdul Latif Ahmad
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia 14300 Nibong Tebal Penang Malaysia
| | - Siew Chun Low
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia 14300 Nibong Tebal Penang Malaysia
| | - Sabine Rode
- Laboratoire Réactions & Génie des Procédés (LRGP) (UMR 7274) ENSIC, Université de Lorraine 1 Rue Grandville 54001 Nancy France
| | - Bouchra Belaissaoui
- Laboratoire Réactions & Génie des Procédés (LRGP) (UMR 7274) ENSIC, Université de Lorraine 1 Rue Grandville 54001 Nancy France
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Asymmetric LSCF Membranes Utilizing Commercial Powders. MATERIALS 2020; 13:ma13030614. [PMID: 32019115 PMCID: PMC7040817 DOI: 10.3390/ma13030614] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 01/17/2020] [Accepted: 01/28/2020] [Indexed: 11/17/2022]
Abstract
Powders of constant morphology and quality are indispensable for reproducible ceramic manufacturing. In this study, commercially available powders were characterized regarding their microstructural properties and screened for a reproducible membrane manufacturing process, which was done by sequential tape casting. Basing on this, the slurry composition and ratio of ingredients were systematically varied in order to obtain flat, crack-free green tapes suitable for upscaling of the manufacturing process. Debinding and sintering parameters were adjusted to obtain defect-free membranes with diminished bending. The crucial parameters are the heating ramp, sintering temperature, and dwell time. The microstructure of the asymmetric membranes was investigated, leading to a support porosity of approximately 35% and a membrane layer thickness of around 20 µm. Microstructure and oxygen flux are comparable to asymmetric La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) membranes manufactured from custom-made powder, showing an oxygen flux of > 1 mLcm-2min at 900 °C in air/Ar gradient.
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Design and fabrication of large-sized planar oxygen transport membrane components for direct integration in oxy-combustion processes. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.03.052] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Yang W, Li F, Li Q. Preparation of sandwich-structured Ce0.8Sm0.2O1.9-Sm0.6Sr0.4FeO3−δ ceramic membranes and its oxygen permeability. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2019.01.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Schulze-Küppers F, Unije U, Blank H, Balaguer M, Baumann S, Mücke R, Meulenberg W. Comparison of freeze-dried and tape-cast support microstructure on high-flux oxygen transport membrane performance. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.07.028] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Comparison of the Simplification of the Pressure Profiles Solving the Binary Friction Model for Asymmetric Membranes. MEMBRANES 2017; 7:membranes7040058. [PMID: 28972561 PMCID: PMC5746817 DOI: 10.3390/membranes7040058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 09/21/2017] [Accepted: 09/26/2017] [Indexed: 11/23/2022]
Abstract
The gas flow through porous media including that of multiple species is frequently described by the binary friction model (BFM) considering the binary diffusion, Knudsen diffusion, and viscous flow. Therefore, a numerical simulation was performed on a microporous support of an asymmetric oxygen transport membrane. As its exact numerical solution is complicated and not always possible, the results of two different levels of simplification of the pressure profiles within the porous support are compared to the exact numerical solution. The simplification using a constant pressure equal to the gas pressure outside the support leads to a deviation by up to 0.45 mL·min−1·cm−2 from the exact solution under certain operating condition. A different simplification using a constant pressure averaged between the outside of the support and the support/membrane interface reduces this deviation to zero. Therefore, this is a useful measure to reduce computational efforts when implementing the Binary Friction Model in computational fluid dynamics simulations.
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