Ultrafine SrCo0.9Nb0.1O3-delta (SCNb) perovskite powders were synthesized by a modified Pechini method using EDTA and citrate acid as chelating agents. Dense SCNb hollow fibre membranes with an asymmetric structure were fabricated via a phase inversion and sintering technique. Oxygen permeation fluxes through the obtained hollow fibre membranes were measured in the temperature range of 500-900 degrees C under air/helium gradients. The results indicated that the oxygen permeation flux through the SCNb hollow fibre membrane was approximately 9.30 mmol m(-2) s(-1) at 650 degrees C when the air feed and the helium sweeping rates were 74.4 mu mol s(-1) and 446 mu mol s(-1), respectively. The SCNb hollow fibre membranes showed a stable oxygen permeation flux over 240 h at 900 degrees C with a maximum value reaching 38.10 mmol m(-2) s(-1) comparing favorable to the performance of other perovskite membranes. (C) 2011 Elsevier B.V. All rights reserved.