TY - JOUR
T1 - Influence of permeation modes on oxygen permeability of the multichannel mixed-conducting hollow fibre membrane
AU - Zhu, Jiawei
AU - Liu, Zhengkun
AU - Guo, Shaobin
AU - Jin, Wanqin
N1 - Publisher Copyright:
© 2014 Elsevier Ltd.
PY - 2015/1/7
Y1 - 2015/1/7
N2 - A multichannel mixed-conducting hollow fibre (MMCHF) membrane, Ba0.5Sr0.5Co0.8Fe0.2O3-δ, has been successfully prepared by a combined phase inversion and sintering technique. Two possible permeation modes can be used in the hollow fibre membrane. One mode is that oxygen permeates from the shell side of the membrane to the lumen side (SL mode), with the other mode being in the direction from the lumen side to the shell side (LS mode). Thus, it is necessary to study oxygen permeability in these two modes to make better use of the membrane. In this work, the influences of oxygen permeation modes on separation performance of MMCHF membrane were investigated systematically. In LS mode, the MMCHF membrane obtains a high oxygen flux of 3.22mlmin-1cm-2 which is higher than that in SL mode. The surface reaction is the rate-limiting step for oxygen transport in the two modes and the surface reaction resistance of LS mode is smaller than that of SL mode. Our work demonstrates that when the MMCHF membrane adopts LS mode, it is beneficial to obtain higher oxygen flux.
AB - A multichannel mixed-conducting hollow fibre (MMCHF) membrane, Ba0.5Sr0.5Co0.8Fe0.2O3-δ, has been successfully prepared by a combined phase inversion and sintering technique. Two possible permeation modes can be used in the hollow fibre membrane. One mode is that oxygen permeates from the shell side of the membrane to the lumen side (SL mode), with the other mode being in the direction from the lumen side to the shell side (LS mode). Thus, it is necessary to study oxygen permeability in these two modes to make better use of the membrane. In this work, the influences of oxygen permeation modes on separation performance of MMCHF membrane were investigated systematically. In LS mode, the MMCHF membrane obtains a high oxygen flux of 3.22mlmin-1cm-2 which is higher than that in SL mode. The surface reaction is the rate-limiting step for oxygen transport in the two modes and the surface reaction resistance of LS mode is smaller than that of SL mode. Our work demonstrates that when the MMCHF membrane adopts LS mode, it is beneficial to obtain higher oxygen flux.
KW - Mixed-conducting membrane
KW - Multichannel hollow fibre membrane
KW - Oxygen permeability
KW - Permeation mode
UR - http://www.scopus.com/inward/record.url?scp=84909619174&partnerID=8YFLogxK
U2 - 10.1016/j.ces.2014.10.014
DO - 10.1016/j.ces.2014.10.014
M3 - 文章
AN - SCOPUS:84909619174
SN - 0009-2509
VL - 122
SP - 614
EP - 621
JO - Chemical Engineering Science
JF - Chemical Engineering Science
ER -