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- W3128654420 abstract "CeO2 aerogel (CeO2-A), nanorod (CeO2-R) and nanoflake (CeO2-F) were prepared via sol-gel, hydrothermal and coprecipitation methods, respectively. The effect of morphology and structure of CeO2 on the catalytic performance in toluene combustion reaction was investigated based on structure analysis provided by characterization. The results revealed that the activity of both CeO2-R and CeO2-F was inferior to that of CeO2-A, due to smaller specific surface area and only exposure of (111) crystal plane dominantly detected from their TEM images for CeO2-R and CeO2-F. While, the CeO2-A had a larger specific surface area and more exposed (111) and (100) facet, which contributed to exposure and formation of more oxygen vacancies and further to the adsorption of more gaseous oxygen. In addition, highly mobile lattice oxygen was another critical factor for influencing the catalytic performance of CeO2, which was beneficial to the redox cycle of Ce3+/Ce4+ and could further accelerate the toluene combustion. As a result, the CeO2-A catalyst exhibited the superior performance in toluene catalytic combustion with t50 of 223°C and t90 of 239°C, respectively, owing to the larger specific surface area, higher exposure of reactive crystal plane and stronger mobility of lattice oxygen." @default.
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- W3128654420 date "2021-02-01" @default.
- W3128654420 modified "2023-10-16" @default.
- W3128654420 title "Effect of preparation methods on the structure and catalytic performance of CeO2 for toluene combustion" @default.
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- W3128654420 doi "https://doi.org/10.1016/s1872-5813(21)60014-2" @default.
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