The undoped and halide-doped perovskite-type oxide AMn(1-x)Cu(x)O(3-delta) (A = La0.8Ba0.2) catalysts have been investigated for the oxidative dehydrogenation of ethane (ODE) to ethene. Under the reaction conditions of temperature = 680 degreesC, C2H6O2/N-2 molar ratio = 2/1/3.7, and space velocity = 6000 mlh(-1) g(-1), AMn(0.7)Cu(0.3)O(2.808)F(0.124) showed 49.2% C2H6 conversion, 66.8% C2H4 selectivity, and 32.9% C2H4 yield; AMn(0.7)Cu(0.3)O(2.808)F(0.124) showed 73.0% C2H6 conversion, 69.5% C2H4 selectivity, and 50.8% C2H4 yield. The sustainable performance during a period of 48 h on-stream reaction at 680 degreesC demonstrated that the F- and Cl-doped catalysts are durable. We also observed that the addition of halide ions to the perovskites could reduce deep ethene oxidation. X-ray powder diffraction results indicated that at x = 0.3 the undoped AMn(1-x)Cu(x)O(3-delta) and halide-doped AMn(1-x)Cu(x)O(3-delta)X(sigma) (X = F, Cl) were single-phase and cubic in structure; when the x value exceeded 0.7, there were trace amounts of La2CuO4 and/or CuO phases besides the perovskite phase. The results of Mn oxidation state titration and X-ray photoelectron spectroscopic studies showed that (i) the surface and bulk compositions of AMn(0.7)Cu(0.3)O(2.808)F(0.124) and AMn(0.7)Cu(0.3)O(2.817)Cl(0.114) are rather similar and (ii) there were Mn4+, Mn3+, and Cu2+ in the catalysts. Oxygen temperature-programmed desorption studies illustrated that the doping of halide would result in the disappearance of oxygen adspecies and the promotion of lattice oxygen activity. The results of O-18/O-16 isotopic exchange indicated that the incorporation of halide ions into the AMn(1-x)Cu(x)O(3-delta) lattice enhanced the activity of lattice oxygen. The outcome of C2H6- and C2H6/O2N2-pulsing investigations demonstrated that adsorbed oxygen species are prone to induce ethane complete oxidation, while lattice oxygen species are active for ethane selective oxidation.