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Chen J, Zhang M, Pang C, Xiang F, Zhu M, Ma X, Chang G, Yin W. Hydrophilic Pd/MgO Nanosystem for the Highly Efficient Aqueous-Phase Catalysis of Suzuki–Miyaura Reactions. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b05248] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Jian Chen
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Maosheng Zhang
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Chong Pang
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Fuwei Xiang
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Mengjing Zhu
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Xiaochen Ma
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Ganggang Chang
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Weiyan Yin
- Hubei Key Laboratory of Biomass Fibers and Eco-dyeing & Finishing, School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430073,China
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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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Zou D, Xu J, Chen X, Drioli E, Qiu M, Fan Y. A novel thermal spraying technique to fabricate fly ash/alumina composite membranes for oily emulsion and spent tin wastewater treatment. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.02.051] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Microstructure Control of Tubular Micro-Channelled Supports Fabricated by the Phase Inversion Casting Method. Processes (Basel) 2019. [DOI: 10.3390/pr7060322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Thin-film membrane layers coated onto porous supports is widely considered as an efficient way to obtain high-performance oxygen transport membranes with both good permeability and high mechanical strength. However, conventional preparation methods of membrane supports usually result in highly tortuous channels with high mass transfer resistance. Tubular porous MgO and MgO/CGO supports were fabricated with a simple phase inversion casting method. Long finger-like channels were obtained inside the dual-phase supports by adjusting the ceramic loading, polymer concentration and particle surface area, as well as by introducing ethanol inside the casting slurries. Slurries that exhibit lower viscosity in the zero-shear viscosity region resulted in more pronounced channel growth. These supports were used to produce thin supported CGO membranes for possible application in O2 separation. Similar shrinkage speeds for the different layers during the sintering process are crucial for obtaining dense asymmetric membranes. The shrinkage of the support tube at a high temperature was greatly affected by the polymer/ceramic ratio and compatible shrinkage behaviours of the two layers were realized with polymer/ceramic weight ratios between 0.175 and 0.225.
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Mixed Ionic-Electronic Conducting Membranes (MIEC) for Their Application in Membrane Reactors: A Review. Processes (Basel) 2019. [DOI: 10.3390/pr7030128] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Mixed ionic-electronic conducting membranes have seen significant progress over the last 25 years as efficient ways to obtain oxygen separation from air and for their integration in chemical production systems where pure oxygen in small amounts is needed. Perovskite materials are the most employed materials for membrane preparation. However, they have poor phase stability and are prone to poisoning when subjected to CO2 and SO2, which limits their industrial application. To solve this, the so-called dual-phase membranes are attracting greater attention. In this review, recent advances on self-supported and supported oxygen membranes and factors that affect the oxygen permeation and membrane stability are presented. Possible ways for further improvements that can be pursued to increase the oxygen permeation rate are also indicated. Lastly, an overview of the most relevant examples of membrane reactors in which oxygen membranes have been integrated are provided.
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Fontaine ML, Denonville C, Li Z, Xing W, Polfus JM, Kvello J, Graff JS, Dahl PI, Henriksen PP, Bredesen R. Fabrication and H2 flux measurement of asymmetric La27W3.5Mo1.5O55.5- − La0.87Sr0.13CrO3- membranes. Ann Ital Chir 2018. [DOI: 10.1016/j.jeurceramsoc.2017.11.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Zhang Y, Yuan RH, Gao JF, Chen CS. Oxygen permeation properties of supported planar Zr0.84Y0.16O1.92-La0.8Sr0.2Cr0.5Fe0.5O3−δ composite membranes. Sep Purif Technol 2016. [DOI: 10.1016/j.seppur.2016.04.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Cheng S, Huang H, Ovtar S, Simonsen SB, Chen M, Zhang W, Søgaard M, Kaiser A, Hendriksen PV, Chen C. High-Performance Microchanneled Asymmetric Gd(0.1)Ce(0.9)O(1.95-δ)-La(0.6)Sr(0.4)FeO(3-δ)-Based Membranes for Oxygen Separation. ACS APPLIED MATERIALS & INTERFACES 2016; 8:4548-4560. [PMID: 26829707 DOI: 10.1021/acsami.5b10714] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A microchanneled asymmetric dual phase composite membrane of 70 vol % Gd(0.1)Ce(0.9)O(1.95-δ)-30 vol % La(0.6)Sr(0.4)FeO(3-δ) (CGO-LSF) was fabricated by a "one step" phase-inversion tape casting. The sample consists of a thin dense membrane (100 μm) and a porous substrate including "finger-like" microchannels. The oxygen permeation flux through the membrane with and without catalytic surface layers was investigated under a variety of oxygen partial pressure gradients. At 900 °C, the oxygen permeation flux of the bare membrane was 1.6 (STP) ml cm(-2) min(-1) for the air/He-case and 10.10 (STP) ml cm(-2) min(-1) for the air/CO-case. Oxygen flux measurements as well as electrical conductivity relaxation show that the oxygen flux through the bare membrane without catalyst is limited by the oxygen surface exchange. The surface exchange can be enhanced by introduction of catalyst on the membrane surface. An increase of the oxygen flux of ∼1.49 (STP) mL cm(-2) min(-1) at 900 °C was observed when catalyst is added for the air/He-case. Mass transfer polarization through the finger-like support was confirmed to be negligible, which benefits the overall performance. A stable flux of 7.00 (STP) ml cm(-2) min(-1) was observed between air/CO/CO2 over 200 h at 850 °C. Partial surface decomposition was observed on the permeate side exposed to CO, in line with predictions from thermodynamic calculations. In a mixture of CO, CO2, H2, and H2O at similar oxygen activity the material will according to the calculation not decompose. The microchanneled asymmetric CGO-LSF membranes show high oxygen permeability and chemical stability under a range of technologically relevant oxygen potential gradients.
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Affiliation(s)
- Shiyang Cheng
- Department of Energy Conversion and Storage, Technical University of Denmark , Risø campus, Frederiksborgvej 399, DK-4000 Roskilde, Denmark
| | - Hua Huang
- CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China , Hefei 230026, China
| | - Simona Ovtar
- Department of Energy Conversion and Storage, Technical University of Denmark , Risø campus, Frederiksborgvej 399, DK-4000 Roskilde, Denmark
| | - Søren B Simonsen
- Department of Energy Conversion and Storage, Technical University of Denmark , Risø campus, Frederiksborgvej 399, DK-4000 Roskilde, Denmark
| | - Ming Chen
- Department of Energy Conversion and Storage, Technical University of Denmark , Risø campus, Frederiksborgvej 399, DK-4000 Roskilde, Denmark
| | - Wei Zhang
- Department of Materials Science and Key Laboratory of Mobile Materials MOE, Jilin University , 130012 Changchun, China
| | - Martin Søgaard
- Department of Energy Conversion and Storage, Technical University of Denmark , Risø campus, Frederiksborgvej 399, DK-4000 Roskilde, Denmark
| | - Andreas Kaiser
- Department of Energy Conversion and Storage, Technical University of Denmark , Risø campus, Frederiksborgvej 399, DK-4000 Roskilde, Denmark
| | - Peter Vang Hendriksen
- Department of Energy Conversion and Storage, Technical University of Denmark , Risø campus, Frederiksborgvej 399, DK-4000 Roskilde, Denmark
| | - Chusheng Chen
- CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China , Hefei 230026, China
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