Perovskite-like La1−xKxMnO3 and related compounds: Solid state chemistry and the catalysis of the reduction of NO by CO and H2
| Autor: | R. J. H. Voorhoeve, J. P. Remeika, L.E. Trimble, A.S. Cooper, P.K. Gallagher, F.J. Disalvo |
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| Rok vydání: | 1975 |
| Předmět: |
Alkali ions
Solid-state chemistry Valence (chemistry) Inorganic chemistry chemistry.chemical_element Condensed Matter Physics Oxygen Dissociative adsorption Electronic Optical and Magnetic Materials Catalysis Inorganic Chemistry chemistry Materials Chemistry Ceramics and Composites Physical chemistry Physical and Theoretical Chemistry Catalytic decomposition |
| Zdroj: | Journal of Solid State Chemistry. 14:395-406 |
| ISSN: | 0022-4596 |
| DOI: | 10.1016/0022-4596(75)90061-4 |
| Popis: | The new compounds La1−xMxMnO3 (0.05 ⩽ x ⩽ 0.4 for M = K; x = 0.2 for M = Na, Rb) have been prepared. La1−xKxMnO3 (0.05 ⩽ x ⩽ 0.4), LaMnO3.01, LaMnO3.15, La0.8Na0.2MnO3, and La0.8Rb0.2MnO3 have been used as catalysts in the reduction of NO. La0.8K0.2MnO3 has also been used in the catalytic decomposition of NO. The activity of these catalysts is related to the presence of a Mn3+/Mn4+ mixed valence and to the relative ease of forming oxygen vacancies in the solid. The presence of cation vacancies in LaMnO3.15 and the substitution of La3+ by alkali ions in LaMnO3 increases the catalytic activity. The reduction of NO involves both molecular and dissociative adsorption of NO. |
| Databáze: | OpenAIRE |
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