(539a) Reaction Performance of Ba0.5Sr0.5Co0.8Fe0.2Ox Asymmetric Oxygen-Permeable Ceramic Membrane Reactor

Developing the membranes with the high oxygen permeation flux is crucial for the application of oxygen-permeable ceramic membrane reactor. Previous studies show applying asymmetric method (membranes contain the dense layer and porous support prepared by the dry-pressing procedure) can effectively improve the oxygen permeation performance of Ba0.5Sr0.5Co0.8Fe0.2Ox (BSCF) further. This paper focuses on investigating the reaction performance of asymmetric BSCF ceramic membrane in the synthesis gas production (CO2 reforming reaction and partial oxidation of methane). The results show it is feasible and beneficial to apply BSCF asymmetric membrane reactors in the synthesis gas production in terms of providing more economic pure oxygen sources, increasing the conversion of CH4 and decreasing the coke generation. Specifically, the relatively high methane conversion and CO selectivity over a Ni based catalyst were obtained in the BSCF membrane reactor with oxygen supplied only by the membrane. The flux of oxygen under reaction conditions was approximately 8 ml/min. These studies show that asymmetric BSCF membranes are promising for the partial oxidation of methane.