oxygen surface exchange coefficients;
net surface exchange flux;
gas-MIEC interfaces;
D O I:
10.1016/S0167-2738(98)00389-0
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
We discuss the different oxygen surface exchange coefficients and the net surface exchange flux i = c(i)k(i0)[exp(n mu(8)/RT) - exp(2n mu/RT)] at gas-MIEC oxide interfaces, where k(i) = k(i0)(p/p(0))(n) is the surface exchange coefficient, derived from isotope exchange experiments, p is the oxygen pressure, mu(s) and mu are the chemical potentials of the gas and of the ion-electron hole pairs at the interface and c(i) is the oxygen ion concentration. The model is applied to oxygen permeation in planar and tubular membranes. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
机构:
Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Univ Chinese Acad Sci, Beijing 100039, Peoples R ChinaChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Liu, Yan
Zhu, Xuefeng
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Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R ChinaChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Zhu, Xuefeng
Li, Mingrun
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Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R ChinaChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Li, Mingrun
Liu, Huanyin
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机构:
Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Univ Chinese Acad Sci, Beijing 100039, Peoples R ChinaChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Liu, Huanyin
Cong, You
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机构:
Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R ChinaChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Cong, You
Yang, Weishen
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Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R ChinaChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China