TY - JOUR

T1 - Unraveling the Structural and Compositional Peculiarities in CTAB-Templated CeO2-ZrO2-MnOx Catalysts for Soot and CO Oxidation

AU - Grabchenko, Maria V

AU - Mikheeva, Natalia N

AU - Mamontov, Grigory V

AU - Cortés Corberán, Vicente

AU - Litvintseva, Kseniya A

AU - Svetlichnyi, Valery A

AU - Vodyankina, Olga V

AU - Salaev, Mikhail A

N1 - This research was funded by the Russian Science Foundation, grant number 23-73-00109, https://rscf.ru/project/23-73-00109/ (accessed on 1 December 2023).

PY - 2023/12

Y1 - 2023/12

N2 - 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.

AB - 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.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85180674369&origin=inward&txGid=2082976fe968fd4b3388180825d7303a

U2 - 10.3390/nano13243108

DO - 10.3390/nano13243108

M3 - Article

C2 - 38133005

VL - 13

JO - Nanomaterials

JF - Nanomaterials

SN - 2079-4991

IS - 24

M1 - 3108

ER -