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CO Oxidation and NO Reduction on Perovskite Oxides
Catalysis Reviews, 1992Abstract The search for substitutes of noble metal supported exhaust control catalysts has led to the study of a number of perovskite oxides (1). The mechanisms of redox processes on these surfaces are topotactic in nature, thus accounting forthe reversible loss and uptake of bulk oxygen or for the concomitant creation and annihilation of vacancies ...
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Compressibility of CaZrO3 perovskite: Comparison with Ca-oxide perovskites
Journal of Solid State Chemistry, 2003Abstract The evolution of the unit-cell parameters of CaZrO3 perovskite, an orthorhombic perovskite belonging to space group Pbnm, have been determined to a pressure of 8.7 GPa at room temperature using single-crystal X-ray diffraction measurements. A fit of a third-order Birch–Murnaghan equation of state to the pressure–volume data yields values of ...
N.L. Ross, T.D. Chaplin
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Complete oxidation of methane over perovskite oxides
Catalysis Letters, 1988The complete oxidation of methane is of significant importance not only for exhaust emission treatment, but also for tunnel cleaniless. In the recent years, many interesting attempts have been focused on this topics. As well known, for the mentioned reaction perovskite oxides have also been suggested.
Zhen Kaiji, Liu Jian, Bi Yingli
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Total Oxidation of Hydrocarbons on Perovskite Oxides
Catalysis Reviews, 1992Abstract Perovskite-type oxides containing transition metals are attracting great attention as catalysts for complete oxidation of hydrocarbons as well as electrochemical reduction of oxygen (1). A s far as I know, the use of perovskite-type oxides as catalysts was first reported by Meadowcroft in 1970 (2) for the electrochemical reduction of oxygen ...
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2017
Crystal structure and important functions of inorganic perovskite oxides are introduced. Perovskite oxides comprise large families among the structures of oxide compounds, and several perovskite-related structures are currently recognized. Typical structures (ABO3) consist of large-sized 12-coordinated cations at the A-site and small-sized 6 ...
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Crystal structure and important functions of inorganic perovskite oxides are introduced. Perovskite oxides comprise large families among the structures of oxide compounds, and several perovskite-related structures are currently recognized. Typical structures (ABO3) consist of large-sized 12-coordinated cations at the A-site and small-sized 6 ...
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Co oxidation on LaCoO3 perovskite
Korean Journal of Chemical Engineering, 1994A study of CO oxidation on LaCoO3 perovskite was performed in an ultrahigh vacuum system by means of adsorption and desorption. All gases were adsorbed at ambient temperature. Two adsorption states (α- and β-) of CO exist. The α-peak at 440 K is attributed to carbonyl species adsorbed on Co3+ ions while the β-peak at 663 K likely comes from bidentate ...
Choong Kyun Rhee, Ho-In Lee
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Introduction to Perovskite Oxides
2019Perovskite, with the chemical formula CaTiO\(_3\), was discovered in 1839 in the Urals. It has a structure consisting of a cage of six oxygen anions surrounding the titanium cation in an octahedron.
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Ferroelectric fatigue in perovskite oxides
Applied Physics Letters, 1995We find that the reduction of the switchable polarization in BaTiO3 crystals via repeated polarization reversals (fatigue) is accompanied by the trapping of electronic charge and atomic scale distortions in the perovskite oxygen octahedron. The distortions are proposed to involve oxygen vacancies.
W. L. Warren, B. A. Tuttle, D. Dimos
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