The preparation and O permeability of Pr0.9AE0.1Al1−xMxO3 system, where AE = Ca or Sr; M = Co or Fe, were studied. It was noted that Pr0.9Sr0.1Al0.2Fe0.8O3 with a membrane thickness of 160μm exhibited an O flux density of 8.2 x 10−6mol/cm2s at 1000C with a CH4 conversion and CO selectivity of 12% and 93%, respectively.

Preparation and Oxygen Permeability of Pr–Al-Based Perovskite-Type Oxides. H.Takamura, K.Enomoto, Y.Aizumi, A.Kamegawa, M.Okada: Solid State Ionics, 2004, 175[1-4], 379-82