Tubular dense perovskite type membranes. Preparation, sealing, and oxygen permeation properties

Shiguang Li; Hong Qi; Nanping Xu; Jun Shi

doi:10.1021/ie990446s

Tubular dense perovskite type membranes. Preparation, sealing, and oxygen permeation properties

Shiguang Li, Hong Qi, Nanping Xu, Jun Shi

College of Chemical Engineering

Nanjing Tech University

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

24 Scopus citations

Abstract

Tubular dense perovskite type membranes were prepared by isostatic pressing and plastic extrusion. The resulting tubular La_0.6Sr_0.4Co_0.2Fe_0.8O _3-δ perovskite type membrane prepared by plastic extrusion (designated as PE-LSCF) has a lower density and oxygen permeation flux compared with that prepared by isostatic pressing (designated as IP-LSCF). A ceramic binder developed by our research center provided reliable sealing for the tubular dense membrane at high temperature. The oxygen permeation flux increases with increasing temperature, and the value is about 0.13 cm³/cm² min (STP) at 1123 K. The activation energy for oxygen permeation is 168 kJ/mol at the temperature range of 1073-1173 K. X-ray diffraction analysis for the membranes over 110 h of operation indicated that SrSO₄, CoSO₄, SrO, Co₂O₃, and La₂O₃ were formed on the surfaces of the tubular membrane, especially for the tubular PE-LSCF membrane, because of interaction with trace SO₂ in the air and the helium and segregation of surface elements.

Original language	English
Pages (from-to)	5028-5033
Number of pages	6
Journal	Industrial and Engineering Chemistry Research
Volume	38
Issue number	12
DOIs	https://doi.org/10.1021/ie990446s
State	Published - Dec 1999

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title = "Tubular dense perovskite type membranes. Preparation, sealing, and oxygen permeation properties",

abstract = "Tubular dense perovskite type membranes were prepared by isostatic pressing and plastic extrusion. The resulting tubular La0.6Sr0.4Co0.2Fe0.8O 3-δ perovskite type membrane prepared by plastic extrusion (designated as PE-LSCF) has a lower density and oxygen permeation flux compared with that prepared by isostatic pressing (designated as IP-LSCF). A ceramic binder developed by our research center provided reliable sealing for the tubular dense membrane at high temperature. The oxygen permeation flux increases with increasing temperature, and the value is about 0.13 cm3/cm2 min (STP) at 1123 K. The activation energy for oxygen permeation is 168 kJ/mol at the temperature range of 1073-1173 K. X-ray diffraction analysis for the membranes over 110 h of operation indicated that SrSO4, CoSO4, SrO, Co2O3, and La2O3 were formed on the surfaces of the tubular membrane, especially for the tubular PE-LSCF membrane, because of interaction with trace SO2 in the air and the helium and segregation of surface elements.",

author = "Shiguang Li and Hong Qi and Nanping Xu and Jun Shi",

year = "1999",

month = dec,

doi = "10.1021/ie990446s",

language = "英语",

volume = "38",

pages = "5028--5033",

journal = "Industrial and Engineering Chemistry Research",

issn = "0888-5885",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Tubular dense perovskite type membranes. Preparation, sealing, and oxygen permeation properties

AU - Li, Shiguang

AU - Qi, Hong

AU - Xu, Nanping

AU - Shi, Jun

PY - 1999/12

Y1 - 1999/12

N2 - Tubular dense perovskite type membranes were prepared by isostatic pressing and plastic extrusion. The resulting tubular La0.6Sr0.4Co0.2Fe0.8O 3-δ perovskite type membrane prepared by plastic extrusion (designated as PE-LSCF) has a lower density and oxygen permeation flux compared with that prepared by isostatic pressing (designated as IP-LSCF). A ceramic binder developed by our research center provided reliable sealing for the tubular dense membrane at high temperature. The oxygen permeation flux increases with increasing temperature, and the value is about 0.13 cm3/cm2 min (STP) at 1123 K. The activation energy for oxygen permeation is 168 kJ/mol at the temperature range of 1073-1173 K. X-ray diffraction analysis for the membranes over 110 h of operation indicated that SrSO4, CoSO4, SrO, Co2O3, and La2O3 were formed on the surfaces of the tubular membrane, especially for the tubular PE-LSCF membrane, because of interaction with trace SO2 in the air and the helium and segregation of surface elements.

AB - Tubular dense perovskite type membranes were prepared by isostatic pressing and plastic extrusion. The resulting tubular La0.6Sr0.4Co0.2Fe0.8O 3-δ perovskite type membrane prepared by plastic extrusion (designated as PE-LSCF) has a lower density and oxygen permeation flux compared with that prepared by isostatic pressing (designated as IP-LSCF). A ceramic binder developed by our research center provided reliable sealing for the tubular dense membrane at high temperature. The oxygen permeation flux increases with increasing temperature, and the value is about 0.13 cm3/cm2 min (STP) at 1123 K. The activation energy for oxygen permeation is 168 kJ/mol at the temperature range of 1073-1173 K. X-ray diffraction analysis for the membranes over 110 h of operation indicated that SrSO4, CoSO4, SrO, Co2O3, and La2O3 were formed on the surfaces of the tubular membrane, especially for the tubular PE-LSCF membrane, because of interaction with trace SO2 in the air and the helium and segregation of surface elements.

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U2 - 10.1021/ie990446s

DO - 10.1021/ie990446s

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SP - 5028

EP - 5033

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

IS - 12

ER -

Tubular dense perovskite type membranes. Preparation, sealing, and oxygen permeation properties

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