Abstract
CO2 perm-selective ceramic/carbonate dual phase membranes are promising in a number of high temperature separation and reaction processes for CO2 capture or process intensification. The stability of these membranes in gas containing SO2 is important for their applications dealing with sulfur containing stream. The present work studies gas permeation performance and stability of Ce0.8Sm0.2O1.9 (SDC)/Li2CO3-Na2CO3 membrane in SO2 containing gas. During CO2 permeation through the SDC/carbonate membrane with feed gas containing SO2, the CO2 permeation flux decreases with on-stream time and the decrease rate increases with the SO2 concentration in the feed gas. The SDC phase remains unchanged after exposure to SO2 containing gas, but the SO2 exposure of the SDC-carbonate dual phase membrane results in formation of sulfate in the carbonate phase in the membrane. The sulfate content in the molten salt phase increases with SO2 concentration in the gas or exposure time. CO2 permeation flux through SDC/carbonate-sulfate dual phase membranes prepared in this work decreases with the increase of the sulfate content in the molten salt phase. The formation of sulfate in the carbonate phase lowers carbonate ion conductivity which becomes the dominant step causing a reduction in CO2 permeance.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 477-484 |
| Number of pages | 8 |
| Journal | Journal of Membrane Science |
| Volume | 540 |
| DOIs | |
| State | Published - Oct 15 2017 |
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Keywords
- CO permeation
- Conductivity
- Dual phase membrane
- Samarium doped ceria
- SO poisoning
ASJC Scopus subject areas
- Biochemistry
- Materials Science(all)
- Physical and Theoretical Chemistry
- Filtration and Separation
Cite this
Carbon dioxide permeation through ceramic-carbonate dual-phase membrane-effects of sulfur dioxide. / Chen, Tianjia; Yu, Baolong; Zhao, Yicheng; Li, Yongdan; Lin, Jerry.
In: Journal of Membrane Science, Vol. 540, 15.10.2017, p. 477-484.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Carbon dioxide permeation through ceramic-carbonate dual-phase membrane-effects of sulfur dioxide
AU - Chen, Tianjia
AU - Yu, Baolong
AU - Zhao, Yicheng
AU - Li, Yongdan
AU - Lin, Jerry
PY - 2017/10/15
Y1 - 2017/10/15
N2 - CO2 perm-selective ceramic/carbonate dual phase membranes are promising in a number of high temperature separation and reaction processes for CO2 capture or process intensification. The stability of these membranes in gas containing SO2 is important for their applications dealing with sulfur containing stream. The present work studies gas permeation performance and stability of Ce0.8Sm0.2O1.9 (SDC)/Li2CO3-Na2CO3 membrane in SO2 containing gas. During CO2 permeation through the SDC/carbonate membrane with feed gas containing SO2, the CO2 permeation flux decreases with on-stream time and the decrease rate increases with the SO2 concentration in the feed gas. The SDC phase remains unchanged after exposure to SO2 containing gas, but the SO2 exposure of the SDC-carbonate dual phase membrane results in formation of sulfate in the carbonate phase in the membrane. The sulfate content in the molten salt phase increases with SO2 concentration in the gas or exposure time. CO2 permeation flux through SDC/carbonate-sulfate dual phase membranes prepared in this work decreases with the increase of the sulfate content in the molten salt phase. The formation of sulfate in the carbonate phase lowers carbonate ion conductivity which becomes the dominant step causing a reduction in CO2 permeance.
AB - CO2 perm-selective ceramic/carbonate dual phase membranes are promising in a number of high temperature separation and reaction processes for CO2 capture or process intensification. The stability of these membranes in gas containing SO2 is important for their applications dealing with sulfur containing stream. The present work studies gas permeation performance and stability of Ce0.8Sm0.2O1.9 (SDC)/Li2CO3-Na2CO3 membrane in SO2 containing gas. During CO2 permeation through the SDC/carbonate membrane with feed gas containing SO2, the CO2 permeation flux decreases with on-stream time and the decrease rate increases with the SO2 concentration in the feed gas. The SDC phase remains unchanged after exposure to SO2 containing gas, but the SO2 exposure of the SDC-carbonate dual phase membrane results in formation of sulfate in the carbonate phase in the membrane. The sulfate content in the molten salt phase increases with SO2 concentration in the gas or exposure time. CO2 permeation flux through SDC/carbonate-sulfate dual phase membranes prepared in this work decreases with the increase of the sulfate content in the molten salt phase. The formation of sulfate in the carbonate phase lowers carbonate ion conductivity which becomes the dominant step causing a reduction in CO2 permeance.
KW - CO permeation
KW - Conductivity
KW - Dual phase membrane
KW - Samarium doped ceria
KW - SO poisoning
UR - http://www.scopus.com/inward/record.url?scp=85021735924&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85021735924&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2017.06.063
DO - 10.1016/j.memsci.2017.06.063
M3 - Article
AN - SCOPUS:85021735924
VL - 540
SP - 477
EP - 484
JO - Jornal of Membrane Science
JF - Jornal of Membrane Science
SN - 0376-7388
ER -