Performance of an Aliovalent-Doping MnCeOx/Cordierite Monolithic Catalyst Derived from MOFs for o-Xylene Oxidation

Zhang, Fan; Zhang, Heng; Wu, Dongfang

doi:10.1007/s10562-023-04417-9

Cited by 2 publications

(2 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The band at ~600 cm −1 is because of the different ionic radius of the dopant ions compared to that of Ce 4+ . The bands above 650 cm −1 can be assigned to the extrinsic defects in ceria as well as aliovalent defects caused by the presence of Mn-related phases where Mn exists in higher oxidation states [56,57]. It is noteworthy that the increase in the Mn + Zr fraction in the series of samples Ce 0.65 Mn 0.2 Zr 0.15 -Ce 0.5 Mn 0.3 Zr 0.2 -Ce 0.5 Mn 0.2 Zr 0.3 increased the intensity of the bands at 536, 584, and 616 cm −1 .…”

Section: Raman Spectroscopymentioning

confidence: 99%

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

Grabchenko,

Mikheeva,

Mamontov

et al. 2023

Nanomaterials

View full text Add to dashboard Cite

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.

show abstract

Section: Raman Spectroscopymentioning

confidence: 99%

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

Grabchenko,

Mikheeva,

Mamontov

et al. 2023

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…In previous study, a two-step hydrothermal method was used to prepare a monolithic catalyst derived from MOFs. [47] Although it has excellent catalytic properties, it is not suitable for practical industrial applications due to its poor mechanical strength. Therefore, in this experiment, we used the improved impregnation method to prepare the monolithic catalyst with good mechanical strength and catalytic activity.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Activity and Mechanical Stability of ZIFs‐Derived CoCeO_x/Cordierite Monolithic Catalysts

Zhang,

2024

ChemistrySelect

View full text Add to dashboard Cite

Bimetallic oxide catalysts derived from zeolitic imidazolate frameworks (ZIFs) have good catalytic oxidation activity, but their application is limited because the powder is not conducive to industrial production. In this study, CoCeOx/cordierite monolithic catalysts derived from ZIFs were prepared by a simple impregnation method. Firstly, a phase transition of Co‐ZIF was induced in ethanol solution by adding excessive Ce(NO3)3. Subsequently, tannic acid (TA) was used to chelate excess metal on the surface to expose more active sites. Meanwhile, TA staying on the surface of the precursor could also prevent the accumulation of Ce at high temperatures. After the activity test, CoCeOx/cordierite showed excellent activity for the catalytic oxidation of o‐xylene with a T90 of 295 °C. The mechanical stability of the catalyst was also tested by ultrasonic vibration method. In addition, we investigated the influence of factors such as impregnation cycles and TA treatment time on the physical and chemical properties. This paper provides a new idea for preparing monolithic catalysts derived from ZIFs.

show abstract

Performance of an Aliovalent-Doping MnCeOx/Cordierite Monolithic Catalyst Derived from MOFs for o-Xylene Oxidation

Cited by 2 publications

References 48 publications

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

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

Catalytic Activity and Mechanical Stability of ZIFs‐Derived CoCeO_x/Cordierite Monolithic Catalysts

Contact Info

Product

Resources

About

Performance of an Aliovalent-Doping MnCeOx/Cordierite Monolithic Catalyst Derived from MOFs for o-Xylene Oxidation

Cited by 2 publications

References 48 publications

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

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

Catalytic Activity and Mechanical Stability of ZIFs‐Derived CoCeOx/Cordierite Monolithic Catalysts

Contact Info

Product

Resources

About

Catalytic Activity and Mechanical Stability of ZIFs‐Derived CoCeO_x/Cordierite Monolithic Catalysts