Structural and redox features of La _0.7 Bi _0.3 Mn _{1− x} Co _x O ₃ nanoperovskites for ethane combustion and CO oxidation

Abstract In this work, structural and catalytic properties of La _0.7 Bi _0.3 Mn _{1− x} Co _x O ₃ nanocatalysts with x =0.00, 0.25, 0.50, 0.75, and 1.00 prepared by citrate method are investigated. The structural characterization using X'Pert package and Fullprof program is an evidence for structural phase transition. The values of refined unit cell volume obtained from the Rietveld analysis show decreasing and increasing tendencies for values of x ≤0.5 and x >0.5, respectively. The catalytic performance tests of the catalysts show that the samples x =0.00 and 0.25 have lower temperature of CO oxidation and C ₂ H ₆ combustion, respectively.