Characteristics of combined carbon dioxide reforming with partial oxidation of methane to produce hydrogen in the membrane reactor

2016 ◽  
Vol 41 (5) ◽  
pp. 689-698 ◽  
Author(s):  
Yunfei Yan ◽  
Gange Wu ◽  
Li Zhang ◽  
Xin Wang ◽  
Lixian Li ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Partial Oxidation ◽  
Membrane Reactor ◽  
Partial Oxidation Of Methane ◽  
Carbon Dioxide Reforming ◽  
Oxidation Of Methane

Dual Role of Perovskite Hollow Fiber Membrane in the Methane Oxidation Reactions

2016 ◽  
pp. 385-430
Author(s):  
Serbia M. Rodulfo-Baechler
Keyword(s):  
Carbon Dioxide ◽  
Methane Oxidation ◽  
Partial Oxidation ◽  
Hollow Fiber Membrane ◽  
Hollow Fibre ◽  
Dual Role ◽  
Partial Oxidation Of Methane ◽  
Oxygen Flux ◽  
Oxidation Reactions ◽  
Oxidation Of Methane

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.

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