La 0.6 Sr 0.4 Fe 0.8 Co 0.2 O 3-δ electrophoretic coating for oxygen transport membranes

被引：5
作者：
Guironnet L. [1 ,3 ]
Geffroy P.-M. [1 ]
Jouay F. [1 ]
Pagnoux C. [1 ]
Richet N. [2 ]
Chartier T. [1 ]
机构：
[1] IRCER, CNRS, Université de Limoges, CEC, 12 Rue Atlantis, Limoges
[2] Air Liquide CRCD, 1 chemin de la Porte des Loges, BP126, Jouy en Josas
[3] ADEME, 20 rue du Grésillé – BP90406, Angers Cedex 01
来源：
Chemical Engineering Science: X | 2019年 / 1卷
关键词：
Electrophoretic coating; Mixed conductor; Oxygen semi-permeation; Porous layer;
D O I：
10.1016/j.cesx.2019.100008
中图分类号：
学科分类号：
摘要：
This work describes the development of electrophoretic deposition method for the elaboration of a porous coating on a dense membrane in order to improve its oxygen permeation performance. The dense membrane material produced from La 0.5 Sr 0.5 Fe 0.7 Ga 0.3 O 3-δ perovskite is coated with La 0.6 Sr 0.4 Fe 0.8 Co 0.2 O 3-δ perovskite layer by electrophoretic deposition method in order to improve the kinetics of oxygen surface exchanges. Then, the oxygen flux through the La 0.5 Sr 0.5 Fe 0.7 Ga 0.3 O 3-δ dense membrane is largely impacted by La 0.6 Sr 0.4 Fe 0.8 Co 0.2 O 3-δ electrophoretic coating, from 0.5 to 2.6 10 −3 mol⋅m −2 ⋅s −1 without and with La 0.6 Sr 0.4 Fe 0.8 Co 0.2 O 3-δ coating after heating at 900 °C, respectively. Besides, a large impact of the thickness of the electrophoretic coating on the oxygen flux through the membranes is observed. The electrophoretic deposition has shown to be a powerful elaboration method of membrane to produce gaseous oxygen with high purity. © 2019 The Author(s)
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