Carbon Monoxide and Methane Oxidation Properties of Oxide Solid Solution Catalysts

Pure and Mn-doped La4SrTi5O17 layered perovskite as potential solid oxide fuel cell material: Structure and anodic performance

“…Being the same as for LST415, atomic positions and displacement factors are not reported for clarity. LSTM415 can be compared to the low activity of La 0.8 Sr 0.2 MnO 3 [53]. However, the catalytic activity of LSTM415 remains higher than that of LST3D structure [33] which reinforces the superiority of 2D structure for catalytic activity, what has probably to see with its electronic structure as suggested in Ref.…”

Surface Exchange of Oxygen in La1−x Sr x FeO3−δ (x = 0, 0.1)

“…La 1-x Sr x FeO 3-d , possessing mixed ionic and electronic conductivity, is a promising cathode material in solid oxide fuel cells, oxygen sensor, oxygen permeable membrane and catalyst [1][2][3]. Oxygen transport is important for these applications, which calls for fundamental understanding of bulk diffusion and the surface exchange kinetics.…”

“…In most cases the oxygen isotope surface exchange coefficient (k o ) is proportional to the partial pressure of oxygen, pO 2 n , where n typically varies between 0.45 and 0.90, at oxidizing conditions [6,7]. The most advanced model for the surface exchange kinetics is based on studies of Fe-doped SrTiO 3 single crystals [8], where dissociation of surface adsorbed O 2 2-intermediates was rate controlling. Measurements on La 1-x Sr x FeO 3-d have proposed that the kinetics are controlled by collision of O 2 (g) and oxygen vacancies giving a rate proportional to dpO 2 [7].…”

Reduction property and catalytic activity of Ce1−XNiXO2 mixed oxide catalysts for CH4 oxidation

“…Supported palladium catalysts were extensively investigated for the methane combustion. They show high activity even below 350 • C [1]. However, their commercialization is still limited by: the decrease of the catalytic activity at high temperature [2], the poisoning, and the need to use extremely expensive palladium.…”