Options
Multiplying oxygen permeability of a Ruddlesden‐Popper oxide by orientation control via magnets
Citation Link: https://doi.org/10.15480/882.14848
Publikationstyp
Journal Article
Date Issued
2024-02-19
Sprache
English
Author(s)
TORE-DOI
Journal
Volume
136
Issue
8
Article Number
e202312473
Citation
Angewandte Chemie 136 (8): e202312473 (2024)
Publisher DOI
Scopus ID
Publisher
Wiley
Ruddlesden-Popper-type oxides exhibit remarkable chemical stability in comparison to perovskite oxides. However, they display lower oxygen permeability. We present an approach to overcome this trade-off by leveraging the anisotropic properties of Nd2NiO4+δ. Its (a,b)-plane, having oxygen diffusion coefficient and surface exchange coefficient several orders of magnitude higher than its c-axis, can be aligned perpendicular to the gradient of oxygen partial pressure by a magnetic field (0.81 T). A stable and high oxygen flux of 1.40 mL min−1 cm−2 was achieved for at least 120 h at 1223 K by a textured asymmetric disk membrane with 1.0 mm thickness under the pure CO2 sweeping. Its excellent operational stability was also verified even at 1023 K in pure CO2. These findings highlight the significant enhancement in oxygen permeation membrane performance achievable by adjusting the grain orientation. Consequently, Nd2NiO4+δ emerges as a promising candidate for industrial applications in air separation, syngas production, and CO2 capture under harsh conditions.
Subjects
Conducting Materials | Magnetic Field | Mixed Ionic Electronic Conducting Membranes | Oxygen Separation | Texture
DDC Class
540: Chemistry
Publication version
publishedVersion
Loading...
Name
Angewandte Chemie - 2023 - Zhao - Multiplying Oxygen Permeability of a Ruddlesden‐Popper Oxide by Orientation Control via.pdf
Type
Main Article
Size
6.93 MB
Format
Adobe PDF