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Coupling of dielectric barrier discharge plasma with oxygen permeable membrane for highly efficient low-temperature permeation

Lookup NU author(s): Dr Kui Zhang

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).

Abstract

© 2021 Elsevier BV. Ceramic oxygen permeable membranes (OPMs) are widely considered the “next generation” technology for pure oxygen separation and catalytic membrane reactors. However, the main issue of OPM is high operating temperature (above 800 °C) and resulting implications for materials, cost, as well as operating complexities (e.g., sealing, creep deformation, and thermal shock during thermal cycling). A new design for coupling OPM La0.6Sr0.4Co0.2Fe0.8O3-δ with a dielectric barrier discharge plasma (a type of atmospheric pressure non-thermal plasma) is proposed for highly efficient low-temperature (600 °C) oxygen permeation. This study demonstrates that the plasma can activate the surface exchange reactions. Applying 15 W air-plasma can effectively reduce the apparent activation energy of the permeation process from 136.6 to 43.1 kJ mol−1. The oxygen flux is increased by a factor of nearly 30 at 600 °C with a plasma power of 15 W. The newly developed plasma-membrane micro-reactor design enables further performance enhancement at lower operating temperatures and integration with solid oxide fuel cells, catalytic membrane reactors, and oxygen permeable membranes.

Publication metadata

Author(s): Zheng Q, Xie Y, Tan J, Xu Z, Luo P, Wang T, Liu Z, Liu F, Zhang K, Fang Z, Zhang G, Jin W

Publication type: Article

Publication status: Published

Journal: Journal of Membrane Science

Year: 2022

Volume: 641

Print publication date: 01/01/2022

Online publication date: 23/09/2021

Acceptance date: 18/09/2021

Date deposited: 30/11/2021

ISSN (print): 0376-7388

ISSN (electronic): 1873-3123

Publisher: Elsevier BV

URL: https://doi.org/10.1016/j.memsci.2021.119896

DOI: 10.1016/j.memsci.2021.119896

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