Details
| Original language | English |
|---|---|
| Article number | 183 |
| Pages (from-to) | 1-19 |
| Number of pages | 19 |
| Journal | Membranes |
| Volume | 10 |
| Issue number | 8 |
| Publication status | Published - 12 Aug 2020 |
Abstract
Dense, H 2-and CO 2-resistant, oxygen-permeable 40 wt % Ce 0.9 Pr 0.1 O 2–δ –60 wt % Nd x Sr 1−x Fe 0.9 Cu 0.1 O 3−δ dual-phase membranes were prepared in a one-pot process. These Nd-containing dual-phase membranes have up to 60% lower material costs than many classically used dual-phase materials. The Ce 0.9 Pr 0.1 O 2−δ –Nd 0.5 Sr 0.5 Fe 0.9 Cu 0.1 O 3−δ sample demonstrates outstanding activity and a regenerative ability in the presence of different atmospheres, especially in a reducing atmosphere and pure CO 2 atmosphere in comparison with all investigated samples. The oxygen permeation fluxes across a Ce 0.9 Pr 0.1 O 2−δ –Nd 0.5 Sr 0.5 Fe 0.9 Cu 0.1 O 3−δ membrane reached up to 1.02 mL min −1 cm −2 and 0.63 mL min −1 cm −2 under an air/He and air/CO 2 gradient at T = 1223 K, respectively. In addition, a Ce 0.9 Pr 0.1 O 2–δ –Nd 0.5 Sr 0.5 Fe 0.9 Cu 0.1 O 3–δ membrane (0.65 mm thickness) shows excellent long-term self-healing stability for 125 h. The repeated membrane fabrication delivered oxygen permeation fluxes had a deviation of less than 5%. These results indicate that this highly renewable dual-phase membrane is a potential candidate for long lifetime, high temperature gas separation applications and coupled reaction–separation processes.
Keywords
- CO tolerance, Dual-phase membrane, Long-term stability, Oxygen separation, Regenerative ability
ASJC Scopus subject areas
- Chemical Engineering(all)
- Chemical Engineering (miscellaneous)
- Chemical Engineering(all)
- Process Chemistry and Technology
- Chemical Engineering(all)
- Filtration and Separation
Sustainable Development Goals
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In: Membranes, Vol. 10, No. 8, 183, 12.08.2020, p. 1-19.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Synthesis and characterization of 40 wt % ce 0.9 pr 0.1 o 2–δ –60 wt % nd x sr 1−x fe 0.9 cu 0.1 o 3dual-phase membranes for efficient oxygen separation
AU - Chen, Guoxing
AU - Zhao, Zhijun
AU - Widenmeyer, Marc
AU - Yan, Ruijuan
AU - Wang, Ling
AU - Feldhoff, Armin
AU - Weidenkaff, Anke
N1 - Funding Information: The authors received funding from Bundesministerium f?r Bildung und Forschung, the grant number is 03SFK2S3B. Acknowledgments: This work is part of the project ?Plasma-induced CO2-conversion? (PiCK, project number: 03SFK2S3B) and financially supported by the German Federal Ministry of Education and Research in the framework of the ?Kopernikus projects for the Energiewende?. The authors are thankful to MSc. Binjie Tang for his support during experiments and discussions. The authors are thankful to Christine Stefani and Robert Dinnebier (Max Planck Institute for Solid State Research, Stuttgart) for the in situ PXRD measurements.
PY - 2020/8/12
Y1 - 2020/8/12
N2 - Dense, H 2-and CO 2-resistant, oxygen-permeable 40 wt % Ce 0.9 Pr 0.1 O 2–δ –60 wt % Nd x Sr 1−x Fe 0.9 Cu 0.1 O 3−δ dual-phase membranes were prepared in a one-pot process. These Nd-containing dual-phase membranes have up to 60% lower material costs than many classically used dual-phase materials. The Ce 0.9 Pr 0.1 O 2−δ –Nd 0.5 Sr 0.5 Fe 0.9 Cu 0.1 O 3−δ sample demonstrates outstanding activity and a regenerative ability in the presence of different atmospheres, especially in a reducing atmosphere and pure CO 2 atmosphere in comparison with all investigated samples. The oxygen permeation fluxes across a Ce 0.9 Pr 0.1 O 2−δ –Nd 0.5 Sr 0.5 Fe 0.9 Cu 0.1 O 3−δ membrane reached up to 1.02 mL min −1 cm −2 and 0.63 mL min −1 cm −2 under an air/He and air/CO 2 gradient at T = 1223 K, respectively. In addition, a Ce 0.9 Pr 0.1 O 2–δ –Nd 0.5 Sr 0.5 Fe 0.9 Cu 0.1 O 3–δ membrane (0.65 mm thickness) shows excellent long-term self-healing stability for 125 h. The repeated membrane fabrication delivered oxygen permeation fluxes had a deviation of less than 5%. These results indicate that this highly renewable dual-phase membrane is a potential candidate for long lifetime, high temperature gas separation applications and coupled reaction–separation processes.
AB - Dense, H 2-and CO 2-resistant, oxygen-permeable 40 wt % Ce 0.9 Pr 0.1 O 2–δ –60 wt % Nd x Sr 1−x Fe 0.9 Cu 0.1 O 3−δ dual-phase membranes were prepared in a one-pot process. These Nd-containing dual-phase membranes have up to 60% lower material costs than many classically used dual-phase materials. The Ce 0.9 Pr 0.1 O 2−δ –Nd 0.5 Sr 0.5 Fe 0.9 Cu 0.1 O 3−δ sample demonstrates outstanding activity and a regenerative ability in the presence of different atmospheres, especially in a reducing atmosphere and pure CO 2 atmosphere in comparison with all investigated samples. The oxygen permeation fluxes across a Ce 0.9 Pr 0.1 O 2−δ –Nd 0.5 Sr 0.5 Fe 0.9 Cu 0.1 O 3−δ membrane reached up to 1.02 mL min −1 cm −2 and 0.63 mL min −1 cm −2 under an air/He and air/CO 2 gradient at T = 1223 K, respectively. In addition, a Ce 0.9 Pr 0.1 O 2–δ –Nd 0.5 Sr 0.5 Fe 0.9 Cu 0.1 O 3–δ membrane (0.65 mm thickness) shows excellent long-term self-healing stability for 125 h. The repeated membrane fabrication delivered oxygen permeation fluxes had a deviation of less than 5%. These results indicate that this highly renewable dual-phase membrane is a potential candidate for long lifetime, high temperature gas separation applications and coupled reaction–separation processes.
KW - CO tolerance
KW - Dual-phase membrane
KW - Long-term stability
KW - Oxygen separation
KW - Regenerative ability
UR - http://www.scopus.com/inward/record.url?scp=85089604339&partnerID=8YFLogxK
U2 - 10.3390/membranes10080183
DO - 10.3390/membranes10080183
M3 - Article
VL - 10
SP - 1
EP - 19
JO - Membranes
JF - Membranes
IS - 8
M1 - 183
ER -