Partial oxidation of methane in hollow-fiber membrane reactors based on alkaline-earth metal-free CO2-tolerant oxide

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  • South China University of Technology
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OriginalspracheEnglisch
Seiten (von - bis)3587-3595
Seitenumfang9
FachzeitschriftAIChE journal
Jahrgang60
Ausgabenummer10
Frühes Online-Datum27 Juni 2014
PublikationsstatusVeröffentlicht - Okt. 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.

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Partial oxidation of methane in hollow-fiber membrane reactors based on alkaline-earth metal-free CO2-tolerant oxide. / Wei, Yanying; Liao, Qing; Li, Zhong et al.
in: AIChE journal, Jahrgang 60, Nr. 10, 10.2014, S. 3587-3595.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Wei Y, Liao Q, Li Z, Wang H, Feldhoff A, Caro J. Partial oxidation of methane in hollow-fiber membrane reactors based on alkaline-earth metal-free CO2-tolerant oxide. AIChE journal. 2014 Okt;60(10):3587-3595. Epub 2014 Jun 27. doi: 10.1002/aic.14540
Wei, Yanying ; Liao, Qing ; Li, Zhong et al. / Partial oxidation of methane in hollow-fiber membrane reactors based on alkaline-earth metal-free CO2-tolerant oxide. in: AIChE journal. 2014 ; Jahrgang 60, Nr. 10. S. 3587-3595.
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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

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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

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