Cu-Mn-Ce mixed oxides catalysts for soot oxidation and their mechanistic chemistry

Shafqat Ali; Xiaodong Wu; Zareen Zuhra; Yue Ma; Yasir Abbas; Baofang Jin; Rui Ran; Duan Weng

doi:10.1016/j.apsusc.2020.145602

Cu-Mn-Ce mixed oxides catalysts for soot oxidation and their mechanistic chemistry

Shafqat Ali
, Xiaodong Wu^*
, Zareen Zuhra
, Yue Ma
, Yasir Abbas
, Baofang Jin
, Rui Ran
, Duan Weng

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

52 Scopus citations

Abstract

A series of flower-like Cu_xMn_yCe_z mixed oxides catalysts for soot removal were prepared via a facile co-precipitation approach followed by calcination. The structural and surface properties of these catalysts were investigated by powder X-ray diffraction, N₂ physisorption, transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, hydrogen temperature-programmed reduction, oxygen temperature-programmed desorption and NO temperature-programmed oxidation. Superior soot oxidation performance was obtained over these ternary mixed oxides catalysts and the corresponding mechanism was explored. In particular, the Cu₁Mn₁Ce₁ catalyst showed a remarkable improvement in soot oxidation activity in both NO + O₂ and O₂ atmospheres. The reusability and durability of these catalysts were assessed, and these materials showed high soot oxidation activity after the hydrothermal stability test.

Original language	English
Article number	145602
Journal	Applied Surface Science
Volume	512
DOIs	https://doi.org/10.1016/j.apsusc.2020.145602
State	Published - 15 May 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 Elsevier B.V.

Keywords

Durability
Mechanism
Mixed Metal Oxides
Oxygen vacancy
Soot oxidation

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1016/j.apsusc.2020.145602

Cite this

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title = "Cu-Mn-Ce mixed oxides catalysts for soot oxidation and their mechanistic chemistry",

abstract = "A series of flower-like CuxMnyCez mixed oxides catalysts for soot removal were prepared via a facile co-precipitation approach followed by calcination. The structural and surface properties of these catalysts were investigated by powder X-ray diffraction, N2 physisorption, transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, hydrogen temperature-programmed reduction, oxygen temperature-programmed desorption and NO temperature-programmed oxidation. Superior soot oxidation performance was obtained over these ternary mixed oxides catalysts and the corresponding mechanism was explored. In particular, the Cu1Mn1Ce1 catalyst showed a remarkable improvement in soot oxidation activity in both NO + O2 and O2 atmospheres. The reusability and durability of these catalysts were assessed, and these materials showed high soot oxidation activity after the hydrothermal stability test.",

keywords = "Durability, Mechanism, Mixed Metal Oxides, Oxygen vacancy, Soot oxidation",

author = "Shafqat Ali and Xiaodong Wu and Zareen Zuhra and Yue Ma and Yasir Abbas and Baofang Jin and Rui Ran and Duan Weng",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = may,

day = "15",

doi = "10.1016/j.apsusc.2020.145602",

language = "English",

volume = "512",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Cu-Mn-Ce mixed oxides catalysts for soot oxidation and their mechanistic chemistry

AU - Ali, Shafqat

AU - Wu, Xiaodong

AU - Zuhra, Zareen

AU - Ma, Yue

AU - Abbas, Yasir

AU - Jin, Baofang

AU - Ran, Rui

AU - Weng, Duan

PY - 2020/5/15

Y1 - 2020/5/15

N2 - A series of flower-like CuxMnyCez mixed oxides catalysts for soot removal were prepared via a facile co-precipitation approach followed by calcination. The structural and surface properties of these catalysts were investigated by powder X-ray diffraction, N2 physisorption, transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, hydrogen temperature-programmed reduction, oxygen temperature-programmed desorption and NO temperature-programmed oxidation. Superior soot oxidation performance was obtained over these ternary mixed oxides catalysts and the corresponding mechanism was explored. In particular, the Cu1Mn1Ce1 catalyst showed a remarkable improvement in soot oxidation activity in both NO + O2 and O2 atmospheres. The reusability and durability of these catalysts were assessed, and these materials showed high soot oxidation activity after the hydrothermal stability test.

AB - A series of flower-like CuxMnyCez mixed oxides catalysts for soot removal were prepared via a facile co-precipitation approach followed by calcination. The structural and surface properties of these catalysts were investigated by powder X-ray diffraction, N2 physisorption, transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, hydrogen temperature-programmed reduction, oxygen temperature-programmed desorption and NO temperature-programmed oxidation. Superior soot oxidation performance was obtained over these ternary mixed oxides catalysts and the corresponding mechanism was explored. In particular, the Cu1Mn1Ce1 catalyst showed a remarkable improvement in soot oxidation activity in both NO + O2 and O2 atmospheres. The reusability and durability of these catalysts were assessed, and these materials showed high soot oxidation activity after the hydrothermal stability test.

KW - Durability

KW - Mechanism

KW - Mixed Metal Oxides

KW - Oxygen vacancy

KW - Soot oxidation

UR - https://www.scopus.com/pages/publications/85079322986

U2 - 10.1016/j.apsusc.2020.145602

DO - 10.1016/j.apsusc.2020.145602

M3 - Article

AN - SCOPUS:85079322986

SN - 0169-4332

VL - 512

JO - Applied Surface Science

JF - Applied Surface Science

M1 - 145602

ER -

Cu-Mn-Ce mixed oxides catalysts for soot oxidation and their mechanistic chemistry

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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