Hydrocarbon Reforming by Using Oxygen Permeable Membranes
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概要
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Oxygen permeable membranes have been attracting much attention for a variety of applications such as hydrocarbon reforming. This article describes the concept of oxygen permeable membranes based on mixed oxide-ion and electronic conductors and trend in material development. To date, perovskite-type oxides such as Ba0.5Sr0.5Co0.8 Fe0.2O3 -δ and dual-phase-type membranes such as (Ce0.85Sm0.15) O2-15vol% MnFe2O4 showing an oxygen permeation rate of 8 ∼ 10 μmol·cm-2·s-1 (≈10 ∼ 13 sccm·cm-2) under CH4 reforming has been developed. Hydrocarbons such as methane and dodecane can be reformed by using these oxygen permeable membranes under dry and low S/C conditions.