Fabrication of BSCF-based mixed oxide ionic-electronic conducting multi-layered membrane by sequential electrophoretic deposition process

Ishii, Kazuei; Matsunaga, Chika; Kobayashi, Kiyoshi; Stevenson, Adam J.; Tardivat, Caroline; Uchikoshi, Tetsuo

doi:10.1016/j.jeurceramsoc.2020.11.024

Cited by 11 publications

(2 citation statements)

References 68 publications

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“…DMC is used as a raw material to synthesize carbonates with different structures, such as dipropyl carbonate, diphenyl carbonate, isonitrile ester, glycerol carbonate, carbamate, and so on. , While synthesizing dipropyl carbonate, the products contain some dimethyl carbonate and n -propanol. − To save cost, it is necessary to recover dimethyl carbonate and n -propanol, which can form an azeotrope. Separating azeotropes require some special distillation methods, such as azeotrope distillation, pressure swing distillation, liquid–liquid extraction, , extractive distillation, , and membrane separation. , …”

Section: Introductionmentioning

confidence: 99%

Liquid–Liquid Equilibrium Experiment and Mechanism Study on the System of Dimethyl Carbonate + n-Propanol + Ionic Liquids

Sun

Xing

et al. 2022

J. Chem. Eng. Data

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While synthesizing dipropyl carbonate, a mixture of dipropyl carbonate, dimethyl carbonate (DMC), and n-propanol (NPA) will be produced. DMC and NPA cannot be separated by ordinary distillation because the system has an azeotropic point; liquid−liquid extraction is a high-efficiency and energy-saving method for separating azeotropes. The liquid−liquid equilibrium (LLE) data are the basis of designing the extraction process. Ionic liquids (ILs) are green and efficient extractants with many advantages. In this study, we selected 1-ethyl-3-methyl-imidazolium dihydrogen phosphate (), and 1-butyl-3-methylimidazolium hydrogen sulfate ([Bmim][HSO 4 ]) as the extractants. First, the LLE data were determined at 101.32 kPa and 298.15 K and verified by the Bachman formula and Hand formula; the R 2 value was all greater than 0.9782. Then, the experimental data of each system were regressed by the NRTL model, the accuracy of NRTL interaction parameters was verified through the G M / RT surface analysis, the root mean square deviation (RMSD) was calculated, and the values were all less than 0.011, which showed that the NRTL model could be used for the prediction of this system. Finally, the extraction mechanism was explored. The electrostatic potential (ESP) on the molecular surface was visually analyzed by ESP analysis; the mutual penetration distances were calculated. Combining the experiment and quantum chemical calculation can help us understand the extraction process more deeply.

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Section: Introductionmentioning

confidence: 99%

Liquid–Liquid Equilibrium Experiment and Mechanism Study on the System of Dimethyl Carbonate + n-Propanol + Ionic Liquids

Sun

Xing

et al. 2022

J. Chem. Eng. Data

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“…Perovskite compounds containing metal oxides (i.e., Ba, La, Sr, Co, Fe, Cu, Ca, Zn, Zr, and Y among others) [17][18][19][20][21][22][23][24][25][26][27][28] have been widely reported for oxygen separation from air. These compounds have been extensively used to prepare perovskite membranes and optimised to deliver high oxygen fluxes [29][30][31][32]. Membrane systems are advantageous as they offer continuous operation.…”

Section: Introductionmentioning

confidence: 99%

Thermal Swing Reduction-Oxidation of Me(Ba, Ca, or Mg)SrCoCu Perovskites for Oxygen Separation from Air

Motuzas

Liu²,

Costa³

2022

Processes

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The climate change impact associated with greenhouse gas emissions is a major global concern. This work investigates perovskite compounds for oxygen separation from air to supply oxygen to oxyfuel energy systems to abate these significant environmental impacts. The perovskites studied were Me0.5Sr0.5Co0.8Cu0.2O3−δ (MeSCC) where the A-site substitution was carried out by four different cations (Me = Ca, Mg, Sr, or Ba). SEM analysis showed the formation of small particle (<1 µm) aggregates with varying morphological features. XRD analysis confirmed that all compounds were perovskites with a hexagonal phase. Under reduction and oxidation reactions (redox), Ba and Ca substitutions resulted in the highest and lowest oxygen release, respectively. In terms of real application for oxygen separation from air, Ba substitution as BaSCC proved to be preferable due to short temperature cycles for the uptake and release of oxygen of 134 °C, contrary to Ca substitution with long and undesirable temperature cycles of 237 °C. As a result, a small air separation unit of 0.66 m3, containing 1000 kg of BaSCC, can produce 18.5 ton y−1 of pure oxygen by using a conservative heating rate of 1 °C min−1. By increasing the heating rate by a further 1 °C min−1, the oxygen production almost doubled by 16.7 ton y−1. These results strongly suggest the major advantages of short thermal cycles as novel designs for air separation. BaSCC was stable under 22 thermal cycles, and coupled with oxygen production, demonstrates the potential of this technology for oxyfuel energy systems to reduce the emission of greenhouse gases.

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Molecular simulation and liquid–liquid equilibrium for the separation of n-heptane and dimethyl carbonate by ionic liquids

Zhang

Shen

et al. 2022

Fluid Phase Equilibria

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Fabrication of BSCF-based mixed oxide ionic-electronic conducting multi-layered membrane by sequential electrophoretic deposition process

Cited by 11 publications

References 68 publications

Liquid–Liquid Equilibrium Experiment and Mechanism Study on the System of Dimethyl Carbonate + n-Propanol + Ionic Liquids

Liquid–Liquid Equilibrium Experiment and Mechanism Study on the System of Dimethyl Carbonate + n-Propanol + Ionic Liquids

Thermal Swing Reduction-Oxidation of Me(Ba, Ca, or Mg)SrCoCu Perovskites for Oxygen Separation from Air

Molecular simulation and liquid–liquid equilibrium for the separation of n-heptane and dimethyl carbonate by ionic liquids

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