Synthesis and Activity of Nanodispersed SnO2–CeO2 Catalyst in the Oxidation Reactions of Carbon Monoxide and Methane
| Autor: | V. N. Grunsky, A. O. Izotova, T. V. Kon’kova, E. A. Simakina, E. Yu. Liberman, I. A. Moiseev |
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| Rok vydání: | 2021 |
| Předmět: |
010405 organic chemistry
Coprecipitation Energy-dispersive X-ray spectroscopy chemistry.chemical_element General Chemistry 010402 general chemistry 01 natural sciences Catalysis 0104 chemical sciences Computer Science Applications chemistry.chemical_compound Cerium chemistry Chemical engineering Modeling and Simulation Specific surface area Mesoporous material Carbon monoxide Solid solution |
| Zdroj: | Kinetics and Catalysis. 62:155-159 |
| ISSN: | 1608-3210 0023-1584 |
| DOI: | 10.1134/s0023158420060051 |
| Popis: | Nanodispersed SnO2–CeO2 catalysts for the oxidation of CO and СН4 were synthesized by coprecipitation in a water–isopropanol solution followed by thermal treatment. It was shown that SnхCe1–хO2 solid solutions based on the crystal lattice of cerium dioxide were formed at x ≤ 0.15. The samples were characterized by energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) analysis, transmission electron microscopy (TEM), nitrogen adsorption–desorption, and gas chromatography. The materials had a mesoporous structure: the specific surface area was 52.3–69.7 m2/g, and the total pore volume was 0.073–0.108 cm3/g. When the SnO2 content was greater than 30 mol %, plate-shaped SnO2 particles with sizes greater than 100 nm were formed along with nearly spherical solid solution particles of size 8–10 nm. The synthesized solid solutions were highly active in the oxidation reactions of CO and methane, and they can be used as catalysts and supports. |
| Databáze: | OpenAIRE |
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