Total oxidation of propane in Ag-doped MnCeOx catalysts: The role of Ag species

Chao Feng; Chong Chen; Jun Wang; Gaoyan Xiong; Zhong Wang; Yuan Pan; Zhaoyang Fei; Yukun Lu; Yunqi Liu; Runduo Zhang; Xuebing Li

doi:10.1016/j.fuel.2022.126208

Total oxidation of propane in Ag-doped MnCeO_x catalysts: The role of Ag species

Chao Feng, Chong Chen, Jun Wang, Gaoyan Xiong, Zhong Wang, Yuan Pan, Zhaoyang Fei, Yukun Lu, Yunqi Liu, Runduo Zhang, Xuebing Li

College of Chemical Engineering

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

30 Scopus citations

Abstract

The development of highly active catalysts for eliminating volatile organic compounds (VOCs) at low temperature is desirable but remains challenging. In this study, a series of Ag-loaded MnCeO_x catalysts were fabricated. Catalysts with an Ag loading of 5 wt% exhibited the highest catalytic activity (T₉₀ = 242 °C) and excellent stability in H₂O, NO₂, and CO atmosphere. Characterization results revealed that the introduction of Ag increased Mn⁴⁺ and Ce³⁺ concentrations and enhanced surface oxygen migration capability, which is conducive to the adsorption and dissociation of propane and O₂. Combining in-situ diffuse reflectance infrared Fourier transform and discrete Fourier transform calculation revealed a novel propane oxidation pathway on MnCeO_x and Ag/MnCeO_x. The addition of Ag species can convert propane into propylene in the initial stage and reduce the activation energy. This study supplied a novel insight into Ag-doped catalysts catalytic mechanism for VOCs oxidation reaction.

Original language	English
Article number	126208
Journal	Fuel
Volume	332
DOIs	https://doi.org/10.1016/j.fuel.2022.126208
State	Published - 15 Jan 2023

Keywords

Ag/MnCeO
Catalytic mechanism
DFT calculation
Propane oxidation
Synergetic effect

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10.1016/j.fuel.2022.126208

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title = "Total oxidation of propane in Ag-doped MnCeOx catalysts: The role of Ag species",

abstract = "The development of highly active catalysts for eliminating volatile organic compounds (VOCs) at low temperature is desirable but remains challenging. In this study, a series of Ag-loaded MnCeOx catalysts were fabricated. Catalysts with an Ag loading of 5 wt% exhibited the highest catalytic activity (T90 = 242 °C) and excellent stability in H2O, NO2, and CO atmosphere. Characterization results revealed that the introduction of Ag increased Mn4+ and Ce3+ concentrations and enhanced surface oxygen migration capability, which is conducive to the adsorption and dissociation of propane and O2. Combining in-situ diffuse reflectance infrared Fourier transform and discrete Fourier transform calculation revealed a novel propane oxidation pathway on MnCeOx and Ag/MnCeOx. The addition of Ag species can convert propane into propylene in the initial stage and reduce the activation energy. This study supplied a novel insight into Ag-doped catalysts catalytic mechanism for VOCs oxidation reaction.",

keywords = "Ag/MnCeO, Catalytic mechanism, DFT calculation, Propane oxidation, Synergetic effect",

author = "Chao Feng and Chong Chen and Jun Wang and Gaoyan Xiong and Zhong Wang and Yuan Pan and Zhaoyang Fei and Yukun Lu and Yunqi Liu and Runduo Zhang and Xuebing Li",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2023",

month = jan,

day = "15",

doi = "10.1016/j.fuel.2022.126208",

language = "英语",

volume = "332",

journal = "Fuel",

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TY - JOUR

T1 - Total oxidation of propane in Ag-doped MnCeOx catalysts

T2 - The role of Ag species

AU - Feng, Chao

AU - Chen, Chong

AU - Wang, Jun

AU - Xiong, Gaoyan

AU - Wang, Zhong

AU - Pan, Yuan

AU - Fei, Zhaoyang

AU - Lu, Yukun

AU - Liu, Yunqi

AU - Zhang, Runduo

AU - Li, Xuebing

PY - 2023/1/15

Y1 - 2023/1/15

N2 - The development of highly active catalysts for eliminating volatile organic compounds (VOCs) at low temperature is desirable but remains challenging. In this study, a series of Ag-loaded MnCeOx catalysts were fabricated. Catalysts with an Ag loading of 5 wt% exhibited the highest catalytic activity (T90 = 242 °C) and excellent stability in H2O, NO2, and CO atmosphere. Characterization results revealed that the introduction of Ag increased Mn4+ and Ce3+ concentrations and enhanced surface oxygen migration capability, which is conducive to the adsorption and dissociation of propane and O2. Combining in-situ diffuse reflectance infrared Fourier transform and discrete Fourier transform calculation revealed a novel propane oxidation pathway on MnCeOx and Ag/MnCeOx. The addition of Ag species can convert propane into propylene in the initial stage and reduce the activation energy. This study supplied a novel insight into Ag-doped catalysts catalytic mechanism for VOCs oxidation reaction.

AB - The development of highly active catalysts for eliminating volatile organic compounds (VOCs) at low temperature is desirable but remains challenging. In this study, a series of Ag-loaded MnCeOx catalysts were fabricated. Catalysts with an Ag loading of 5 wt% exhibited the highest catalytic activity (T90 = 242 °C) and excellent stability in H2O, NO2, and CO atmosphere. Characterization results revealed that the introduction of Ag increased Mn4+ and Ce3+ concentrations and enhanced surface oxygen migration capability, which is conducive to the adsorption and dissociation of propane and O2. Combining in-situ diffuse reflectance infrared Fourier transform and discrete Fourier transform calculation revealed a novel propane oxidation pathway on MnCeOx and Ag/MnCeOx. The addition of Ag species can convert propane into propylene in the initial stage and reduce the activation energy. This study supplied a novel insight into Ag-doped catalysts catalytic mechanism for VOCs oxidation reaction.

KW - Ag/MnCeO

KW - Catalytic mechanism

KW - DFT calculation

KW - Propane oxidation

KW - Synergetic effect

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U2 - 10.1016/j.fuel.2022.126208

DO - 10.1016/j.fuel.2022.126208

M3 - 文章

AN - SCOPUS:85140726870

SN - 0016-2361

VL - 332

JO - Fuel

JF - Fuel

M1 - 126208

ER -

Total oxidation of propane in Ag-doped MnCeO_x catalysts: The role of Ag species

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Keywords

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