Synthesis and oxygen permeation properties of La0.2Sr0.8Co0.2Fe0.8O3-δ membranes

Shiguang Li; Wanqin Jin; Nanping Xu; Jun Shi

doi:10.1016/S0167-2738(99)00136-8

Synthesis and oxygen permeation properties of La_0.2Sr_0.8Co_0.2Fe_0.8O_3-δ membranes

Shiguang Li, Wanqin Jin, Nanping Xu, Jun Shi

College of Chemical Engineering

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

105 Scopus citations

Abstract

Three synthesis methods were compared for the preparation of La_0.2Sr_0.8Co_0.2Fe_0.8O_3-δ (LSCF) powders. It was found that the solid state reaction method is the most easily controlled and effective. A mathematical model in consideration of membrane bulk diffusion and surface reaction has been developed to simulate the performance of the disk-shaped dense membranes for oxygen permeation. The experimental results showed that oxygen permeation flux of the LSCF membrane increases with the decreasing downstream oxygen partial pressure, and the oxygen permeation flux through a 2 mm LSCF membrane is about 0.32 cm³/cm² min (STP) at 1123 K and the oxygen partial pressure of 0.21/1×10^-3 atm. The characteristic thickness (L_c) of the LSCF membrane was estimated to be 1.8 mm by modeling and experimental study.

Original language	English
Pages (from-to)	161-170
Number of pages	10
Journal	Solid State Ionics
Volume	124
Issue number	1
DOIs	https://doi.org/10.1016/S0167-2738(99)00136-8
State	Published - 1 Sep 1999

Access to Document

10.1016/S0167-2738(99)00136-8

Cite this

@article{3f710b228c4942c4a005e9d5c0f1f065,

title = "Synthesis and oxygen permeation properties of La0.2Sr0.8Co0.2Fe0.8O3-δ membranes",

abstract = "Three synthesis methods were compared for the preparation of La0.2Sr0.8Co0.2Fe0.8O3-δ (LSCF) powders. It was found that the solid state reaction method is the most easily controlled and effective. A mathematical model in consideration of membrane bulk diffusion and surface reaction has been developed to simulate the performance of the disk-shaped dense membranes for oxygen permeation. The experimental results showed that oxygen permeation flux of the LSCF membrane increases with the decreasing downstream oxygen partial pressure, and the oxygen permeation flux through a 2 mm LSCF membrane is about 0.32 cm3/cm2 min (STP) at 1123 K and the oxygen partial pressure of 0.21/1×10-3 atm. The characteristic thickness (Lc) of the LSCF membrane was estimated to be 1.8 mm by modeling and experimental study.",

author = "Shiguang Li and Wanqin Jin and Nanping Xu and Jun Shi",

year = "1999",

month = sep,

day = "1",

doi = "10.1016/S0167-2738(99)00136-8",

language = "英语",

volume = "124",

pages = "161--170",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier B.V.",

number = "1",

}

TY - JOUR

T1 - Synthesis and oxygen permeation properties of La0.2Sr0.8Co0.2Fe0.8O3-δ membranes

AU - Li, Shiguang

AU - Jin, Wanqin

AU - Xu, Nanping

AU - Shi, Jun

PY - 1999/9/1

Y1 - 1999/9/1

N2 - Three synthesis methods were compared for the preparation of La0.2Sr0.8Co0.2Fe0.8O3-δ (LSCF) powders. It was found that the solid state reaction method is the most easily controlled and effective. A mathematical model in consideration of membrane bulk diffusion and surface reaction has been developed to simulate the performance of the disk-shaped dense membranes for oxygen permeation. The experimental results showed that oxygen permeation flux of the LSCF membrane increases with the decreasing downstream oxygen partial pressure, and the oxygen permeation flux through a 2 mm LSCF membrane is about 0.32 cm3/cm2 min (STP) at 1123 K and the oxygen partial pressure of 0.21/1×10-3 atm. The characteristic thickness (Lc) of the LSCF membrane was estimated to be 1.8 mm by modeling and experimental study.

AB - Three synthesis methods were compared for the preparation of La0.2Sr0.8Co0.2Fe0.8O3-δ (LSCF) powders. It was found that the solid state reaction method is the most easily controlled and effective. A mathematical model in consideration of membrane bulk diffusion and surface reaction has been developed to simulate the performance of the disk-shaped dense membranes for oxygen permeation. The experimental results showed that oxygen permeation flux of the LSCF membrane increases with the decreasing downstream oxygen partial pressure, and the oxygen permeation flux through a 2 mm LSCF membrane is about 0.32 cm3/cm2 min (STP) at 1123 K and the oxygen partial pressure of 0.21/1×10-3 atm. The characteristic thickness (Lc) of the LSCF membrane was estimated to be 1.8 mm by modeling and experimental study.

UR - http://www.scopus.com/inward/record.url?scp=0032679271&partnerID=8YFLogxK

U2 - 10.1016/S0167-2738(99)00136-8

DO - 10.1016/S0167-2738(99)00136-8

M3 - 文章

AN - SCOPUS:0032679271

SN - 0167-2738

VL - 124

SP - 161

EP - 170

JO - Solid State Ionics

JF - Solid State Ionics

IS - 1

ER -

Synthesis and oxygen permeation properties of La_0.2Sr_0.8Co_0.2Fe_0.8O_3-δ membranes

Abstract

Access to Document

Other files and links

Fingerprint

Cite this