کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6591634 | 456879 | 2013 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Oxygen semi-permeation performances of La1âxAxCo1âyâzFeyTazO3âδ perovskite (with A=Sr and Ba)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Oxygen semi-permeation performances of La1âxAxCo1âyâzFeyTazO3âδ perovskite (with A=Sr and Ba) Oxygen semi-permeation performances of La1âxAxCo1âyâzFeyTazO3âδ perovskite (with A=Sr and Ba)](/preview/png/6591634.png)
چکیده انگلیسی
Cobalt-based perovskite oxides like La1âxSrxCo1âyFeyO3âδ or Ba1âxSrxCo1âyFeyO3âδ are considered as promising materials, because of very high oxygen semi-permeation. However, this perovskite material series presents a low chemical stability for industrial application due to the flexible redox behavior of cobalt. Then, recent studies show that the Ta co-doping on the B-site of perovskite structure improves the chemical stability under reducing conditions at high temperature. This paper is devoted to the study of La1âxAxCo1âyâzFeyTazO3âδ perovskite systems (with A=Sr and Ba), and specifically the impact of Ta and Fe doping on the chemical stability and oxygen semi-permeation performances. Besides, this work aims at better understanding of oxygen transport mechanism through the La1âxAxCo1âyâzFeyTazO3âδ perovskite membranes (with A=Sr or Ba) that is not yet clearly identified. This better understanding involves dissociating the oxygen transport steps linked to oxygen diffusion in the membrane bulk and to the surface exchange on both membrane surfaces.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Science - Volume 104, 18 December 2013, Pages 817-828
Journal: Chemical Engineering Science - Volume 104, 18 December 2013, Pages 817-828
نویسندگان
P.M. Geffroy, M. Reichmann, J. Fouletier, N. Richet, T. Chartier,