Details
| Original language | English |
|---|---|
| Pages (from-to) | 3587-3595 |
| Number of pages | 9 |
| Journal | AIChE journal |
| Volume | 60 |
| Issue number | 10 |
| Early online date | 27 Jun 2014 |
| Publication status | Published - Oct 2014 |
Abstract
The U-shaped alkaline-earth metal-free CO2-stable oxide hollow-fiber membranes based on (Pr0.9La0.1)2(Ni0.74Cu0.21Ga0.05)O4+δ (PLNCG) are prepared by a phase-inversion spinning process and applied successfully in the partial oxidation of methane (POM) to syngas. The effects of temperature, CH4 concentration and flow rate of the feed air on CH4 conversion, CO selectivity, H2/CO ratio, and oxygen permeation flux through the PLNCG hollow-fiber membrane are investigated in detail. The oxygen permeation flux arrives at approximately 10.5 mL/min cm2 and the CO selectivity is higher than 99.5% with a CH4 conversion of 97.0% and a H2/CO ratio of 1.8 during 140 h steady operation. The spent hollow-fiber membrane still maintains a dense microstructure and the Ruddlesden-Popper K2NiF4-type structure, which indicates that the U-shaped alkaline-earth metal-free CO2-tolerant PLNCG hollow-fiber membrane reactor can be steadily operated for POM to syngas with good performance.
Keywords
- Hollow fiber, Membrane separations, Oxygen permeation, Partial oxidation of methane
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Biotechnology
- Environmental Science(all)
- Environmental Engineering
- Chemical Engineering(all)
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In: AIChE journal, Vol. 60, No. 10, 10.2014, p. 3587-3595.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Partial oxidation of methane in hollow-fiber membrane reactors based on alkaline-earth metal-free CO2-tolerant oxide
AU - Wei, Yanying
AU - Liao, Qing
AU - Li, Zhong
AU - Wang, Haihui
AU - Feldhoff, Armin
AU - Caro, Jürgen
PY - 2014/10
Y1 - 2014/10
N2 - The U-shaped alkaline-earth metal-free CO2-stable oxide hollow-fiber membranes based on (Pr0.9La0.1)2(Ni0.74Cu0.21Ga0.05)O4+δ (PLNCG) are prepared by a phase-inversion spinning process and applied successfully in the partial oxidation of methane (POM) to syngas. The effects of temperature, CH4 concentration and flow rate of the feed air on CH4 conversion, CO selectivity, H2/CO ratio, and oxygen permeation flux through the PLNCG hollow-fiber membrane are investigated in detail. The oxygen permeation flux arrives at approximately 10.5 mL/min cm2 and the CO selectivity is higher than 99.5% with a CH4 conversion of 97.0% and a H2/CO ratio of 1.8 during 140 h steady operation. The spent hollow-fiber membrane still maintains a dense microstructure and the Ruddlesden-Popper K2NiF4-type structure, which indicates that the U-shaped alkaline-earth metal-free CO2-tolerant PLNCG hollow-fiber membrane reactor can be steadily operated for POM to syngas with good performance.
AB - The U-shaped alkaline-earth metal-free CO2-stable oxide hollow-fiber membranes based on (Pr0.9La0.1)2(Ni0.74Cu0.21Ga0.05)O4+δ (PLNCG) are prepared by a phase-inversion spinning process and applied successfully in the partial oxidation of methane (POM) to syngas. The effects of temperature, CH4 concentration and flow rate of the feed air on CH4 conversion, CO selectivity, H2/CO ratio, and oxygen permeation flux through the PLNCG hollow-fiber membrane are investigated in detail. The oxygen permeation flux arrives at approximately 10.5 mL/min cm2 and the CO selectivity is higher than 99.5% with a CH4 conversion of 97.0% and a H2/CO ratio of 1.8 during 140 h steady operation. The spent hollow-fiber membrane still maintains a dense microstructure and the Ruddlesden-Popper K2NiF4-type structure, which indicates that the U-shaped alkaline-earth metal-free CO2-tolerant PLNCG hollow-fiber membrane reactor can be steadily operated for POM to syngas with good performance.
KW - Hollow fiber
KW - Membrane separations
KW - Oxygen permeation
KW - Partial oxidation of methane
UR - http://www.scopus.com/inward/record.url?scp=84907168937&partnerID=8YFLogxK
U2 - 10.1002/aic.14540
DO - 10.1002/aic.14540
M3 - Article
AN - SCOPUS:84907168937
VL - 60
SP - 3587
EP - 3595
JO - AIChE journal
JF - AIChE journal
SN - 0001-1541
IS - 10
ER -