New approaches for enhancement of oxygen fluxes on hollow fiber membranes

被引:3
|
作者
Popov, Mikhail P. [1 ]
Gainutdinov, Igor I. [1 ]
Bychkov, Sergey F. [1 ]
Nemudry, Alexander P. [1 ,2 ]
机构
[1] Russian Acad Sci, Inst Solid State Chem & Mechanochem, Siberian Branch, Novosibirsk 630128, Russia
[2] Novosibirsk State Univ, Novosibirsk 630090, Russia
关键词
Oxygen permeable membranes; nonstoichiometricperovskites; BSCF; oxygen flux; hollow fibers; current heating; BA0.5SR0.5CO0.8FE0.2O3-DELTA; PERMEATION; SEPARATION; PEROVSKITES; SYNGAS;
D O I
10.1016/j.matpr.2017.09.013
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Hollow fiber (HF) membranes composed of Ba0.5Sr0.5Co0.78W0.02Fe0.2O3-delta (BSCFW2) were prepared by the phase inversion technique. The maximum measured oxygens flux through BSCFW2 HF membranes was 10.4 ml/(min*cm(2)) at T= 900 degrees C and pO(2,1) = 0.7 atm. Study of the dependence of oxygen fluxes through BSCFW2 HF on temperature (T= 800-900 degrees C) and oxygen partial pressure on the feed side (pO(2,1)= 0.1-0.7 atm) was performed. It was shown that the rate-determining step of oxygen permeability is the kinetics of surface reactions with activation energy of 135 +/- 10 kJ/mol for furnace heating and 90 +/- 5 kJ/mol for current heating. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码:11381 / 11384
页数:4
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