Catalytic oxidation of vinyl chloride emission over LaMnO3 and LaB0.2Mn0.8O3 (B = Co, Ni, Fe) catalysts
| Autor: | Guanzhong Lu, Wangcheng Zhan, Alexandre Baylet, Yanglong Guo, Anne Giroir-Fendler, Chao Wang, Chuanhui Zhang, Yun Guo |
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| Přispěvatelé: | INGENIERIE (INGENIERIE), Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), AIR:INGENIERIE+AGF |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Reaction mechanism
Process Chemistry and Technology Inorganic chemistry chemistry.chemical_element 02 engineering and technology [CHIM.CATA]Chemical Sciences/Catalysis 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Oxygen [SDE.ES]Environmental Sciences/Environmental and Society Catalysis Vinyl chloride 3. Good health 0104 chemical sciences chemistry.chemical_compound Adsorption Catalytic oxidation chemistry 0210 nano-technology General Environmental Science Space velocity Perovskite (structure) |
| Zdroj: | Applied Catalysis B: Environmental Applied Catalysis B: Environmental, Elsevier, 2013, 129, pp.509-516. ⟨10.1016/j.apcatb.2012.09.056⟩ |
| ISSN: | 0926-3373 |
| DOI: | 10.1016/j.apcatb.2012.09.056⟩ |
| Popis: | AIR:INGENIERIE+YGU:YGU:ABA:AGF; The LaMnO3 and LaB0.2Mn0.8O3 (B = Co, Ni, Fe) perovskite-type oxides were prepared by the conventional co-precipitation method and studied as catalysts for the oxidation of vinyl chloride emission in the temperature range of 50-350 degrees C. Their physicochemical properties were characterized by ICP-AES, N-2 adsorption, XRD, H-2-TPR, O-2-TPD and XPS. Catalytic performances were evaluated for the oxidation of 1000 ppm of VC in air at a GHSV of 15,000 h(-1). The substituted LaB0.2Mn0.8O3 samples showed higher catalytic activity than pure LaMnO3. Characterization results revealed that the catalytic activity of the perovskite oxides was greatly related to the low-temperature reducibility of the B site and the amount of adsorbed oxygen species and vacancies on the surface. The surface adsorbed oxygen species played a key role in the catalytic reaction and oxygen vacancies promoted the oxygen mobility. A reaction mechanism of vinyl chloride oxidation over LaMnO3-based perovskite oxides was proposed. (C) 2012 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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