Simultaneous conversion of carbon dioxide and methane to syngas using an oxygen transport membrane in pure CO2and CH4atmospheres

2018 ◽  
Vol 6 (29) ◽  
pp. 14246-14254 ◽  
Author(s):  
Jeong Hwan Park ◽  
Young-il Kwon ◽  
Gyeong Duk Nam ◽  
Jong Hoon Joo

The utilization of CO2, coupled with partial oxidation of methane (POM) by using an oxygen transport membrane, has been investigated.

2014 ◽  
Vol 2 (21) ◽  
pp. 7780-7787 ◽  
Author(s):  
Huixia Luo ◽  
Tobias Klande ◽  
Zhengwen Cao ◽  
Fangyi Liang ◽  
Haihui Wang ◽  
...  

We report a novel CO2-stable reduction-tolerant dual-phase oxygen transport membrane 40 wt% Nd0.6Sr0.4FeO3−δ–60 wt% Ce0.9Nd0.1O2−δ. This membrane material shows good reversibility of the oxygen permeation fluxes, good stability in a CO2 atmosphere and under the harsh conditions of partial oxidation of methane to synthesis gas up to 950 °C.


Author(s):  
Serbia M. Rodulfo-Baechler

The Mixed Ionic and Electronic Conducting (MIEC) membrane reactors are of interest because they have the potential to produce high purity oxygen from air at lower costs and provide a continuous oxygen supply to reactions or/and industrial processes. The study of the dual role oxygen flux and catalytic performance of the unmodified and Ni-coated La0.6Sr0.4Co0.2Fe0.8O3-d hollow fibre membranes (LSCF6428 HFM) in the methane oxidation reactions (i.e., partial oxidation of methane and methane combustion) by using air on lumen side and methane on shell side are shown in this chapter. The LSCF6428 HFM participates not only in the oxygen flux but also in the methane conversion to C2. A Ni-coated LSCF6428 HFM under lean O2/CH4 gradient (i.e., 0.5) showed the production of syngas, carbon dioxide and C2 products in agreement with the thermodynamic calculation. At rich O2/CH4 gradient (i.e., 1.0), the formation of carbon dioxide was facilitated. The main catalytic pathway at lean O2/CH4 gradient and H2 reduction treatment was partial oxidation of methane to C2 and syngas.


Nature ◽  
1991 ◽  
Vol 352 (6332) ◽  
pp. 225-226 ◽  
Author(s):  
A. T. Ashcroft ◽  
A. K. Cheetham ◽  
M. L. H. Green ◽  
P. D. F. Vernon

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