Partial oxidation of CH₄ with Pr₂NiO₄ based oxide reactor by using oxygen permeating membrane

Abstract

Since the synthesis gas with H₂:CO=2:1 is obatined in CH₄ partial oxidation, CH₄ partial oxidation is expecting as the primary reaction for converting CH₄ to liquid fuels. However, pure oxygen is essentially requested for this reaction. In this study, oxygen permeation property of Pr₂NiO₄ with doping excess amount of Ga. It was found that the extremely high oxygen permeation rate is achieved on Pr₂Ni_0.75Cu_0.25Ga_0.05O₄ from air to He. In addition, further higher oxygen permeation rate is achieved on Pr₂Ni_0.75Cu_0.25Ga_0.07O₄ under CH₄ partial oxidation condition.