Total oxidation of toluene over calcined trimetallic hydrotalcites type catalysts
| Autor: | Arnaldo C. Faro, M. Filipa Ribeiro, Juliana Velasquez, Luz Amparo Palacio, Adriana Echavarría, F. Ramôa Ribeiro |
|---|---|
| Přispěvatelé: | Luz A. Palacio, Juliana Velasquez, Adriana Echavarría, Arnaldo Faro, F. Ramôa Ribeiro, M. Filipa Ribeiro |
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
Environmental Engineering
Magnesium Hydroxide Health Toxicology and Mutagenesis Inorganic chemistry Infrared spectroscopy chemistry.chemical_element Industrial Waste Combustion VOCS Aluminum Hydroxide Manganese TOLUENE Catalysis Hazardous Substances law.invention chemistry.chemical_compound Adsorption law Environmental Chemistry Calcination Thermal analysis Waste Management and Disposal Hydrotalcite Chemistry Temperature Carbon Dioxide Pollution Toluene Zinc HYDROTALCITE Oxidation-Reduction |
| Popis: | Two trimetallic ZnCuAl and MnCuAl hydrotalcites have been successfully synthesized by a co-precipitation method. The manganese based material was identified as a new hydrotalcite phase. Both lamellar precursors were calcined at 450 and 600 degrees C and the resulting catalysts were tested on reaction of total oxidation of toluene. The solids were characterized by X-ray diffraction, thermal analysis, atomic absorption spectroscopy, Fourier transformed infrared spectroscopy, N(2) adsorption and H(2) temperature-programmed reduction. It was found that ZnCuAl materials are composed of copper and zinc oxides supported on alumina; while MnCuAl ones comprise basically spinel phases, which were not completely identified. The catalytic behavior of the calcined samples showed that Mn hydrotalcite calcined at 450 degrees C exhibited the best catalytic performance that corresponds to 100% toluene conversion into CO(2) at about 300 degrees C. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|