TY - JOUR
T1 - Enhanced stability of membrane reactor for thermal decomposition of CO2 via porous-dense-porous triple-layer composite membrane
AU - Zhang, Kai
AU - Zhang, Guangru
AU - Liu, Zhengkun
AU - Zhu, Jiawei
AU - Zhu, Na
AU - Jin, Wanqin
PY - 2014/12/1
Y1 - 2014/12/1
N2 - A triple-layer composite membrane with porous-dense-porous structure was proposed to develop a high performance membrane reactor. The triple-layer composite membrane consists of a porous Sr0.7Ba0.3Fe0.9Mo0.1O3-δ (SBFM) layer, a dense 0.5wt% Nb2O5-doped SrCo0.8Fe0.2O3-δ (SCFNb) layer and a porous La0.8Sr0.2MnO3-δ-yttria stabilized zirconia (LSM/YSZ) layer. The porous layers can effectively reduce the corrosion of the reactive atmosphere to the membrane, while the dense layer permeated oxygen effectively. Compared with single layer dense SCFNb membrane reactor, the triple-layer composite membrane reactor can be operated for more than 500h. At the temperature of 900°C, the CO2 conversion can reach 20.58% with the CH4 conversion, CO selectivity and O2 flux being about 84%, 97% and 2.13 mL(STP)cm-2min-1, respectively. The porous-dense-porous structure can successfully combine the high oxygen permeation and stability of the membrane reactor.
AB - A triple-layer composite membrane with porous-dense-porous structure was proposed to develop a high performance membrane reactor. The triple-layer composite membrane consists of a porous Sr0.7Ba0.3Fe0.9Mo0.1O3-δ (SBFM) layer, a dense 0.5wt% Nb2O5-doped SrCo0.8Fe0.2O3-δ (SCFNb) layer and a porous La0.8Sr0.2MnO3-δ-yttria stabilized zirconia (LSM/YSZ) layer. The porous layers can effectively reduce the corrosion of the reactive atmosphere to the membrane, while the dense layer permeated oxygen effectively. Compared with single layer dense SCFNb membrane reactor, the triple-layer composite membrane reactor can be operated for more than 500h. At the temperature of 900°C, the CO2 conversion can reach 20.58% with the CH4 conversion, CO selectivity and O2 flux being about 84%, 97% and 2.13 mL(STP)cm-2min-1, respectively. The porous-dense-porous structure can successfully combine the high oxygen permeation and stability of the membrane reactor.
KW - Carbon dioxide
KW - Thermal decomposition
KW - Triple-layer composite membrane
UR - http://www.scopus.com/inward/record.url?scp=84906275023&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2014.06.060
DO - 10.1016/j.memsci.2014.06.060
M3 - 文章
AN - SCOPUS:84906275023
SN - 0376-7388
VL - 471
SP - 9
EP - 15
JO - Journal of Membrane Science
JF - Journal of Membrane Science
ER -