Unraveling the structural and compositional peculiarities in CTAB-templated CeO2-ZrO2-MnOx catalysts for soot and CO oxidation

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Unraveling the structural and compositional peculiarities in CTAB-templated CeO2-ZrO2-MnOx catalysts for soot and CO oxidation	11 MB	Adobe Acrobat PDF	Read	Download
DOI Доступ к ресурсу на сайте издателя			10.3390/nano13243108

Title: Unraveling the structural and compositional peculiarities in CTAB-templated CeO2-ZrO2-MnOx catalysts for soot and CO oxidation
Creator: Grabchenko, Maria V.
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Mikheeva, Natalia N.
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Mamontov, Grigory V.
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Corberán, Vicente Cortés
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Litvintseva, Kseniya A.
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Svetlichnyi, Valerii A.
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Vodyankina, Olga V.
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Salaev, Mikhail A.
Date: 2023
DOI: 10.3390/nano13243108
Description: Structure–performance relationships in functional catalysts allow for controlling their performance in a wide range of reaction conditions. Here, the structural and compositional peculiarities in CTAB-templated CeO2-ZrO2-MnOx catalysts prepared by co-precipitation of precursors and their catalytic behavior in CO oxidation and soot combustion are discussed. A complex of physical–chemical methods (low-temperature N2 sorption, XRD, TPR-H2, Raman, HR TEM, XPS) is used to elucidate the features of the formation of interphase boundaries, joint phases, and defects in multicomponent oxide systems. The addition of Mn and/or Zr dopant to ceria is shown to improve its performance in both reactions. Binary Ce-Mn catalysts demonstrate enhanced performance closely followed by the ternary oxide catalysts, which is due the formation of several types of active sites, namely, highly dispersed MnOx species, oxide–oxide interfaces, and oxygen vacancies that can act individually and/or synergistically.