Enhanced low-temperature catalytic performance for toluene combustion of CeO2-supported Pt-Ir alloy catalysts

Yue Zhang; Cong Wu; Zhiqiang Wang; Jiawei Ji; Haiqin Wan; Weixin Zou; Qing Tong; Jingfang Sun; Lin Dong; Yu Wen Chen

doi:10.1016/j.apsusc.2021.152278

Enhanced low-temperature catalytic performance for toluene combustion of CeO₂-supported Pt-Ir alloy catalysts

Yue Zhang
, Cong Wu
, Zhiqiang Wang
, Jiawei Ji
, Haiqin Wan
, Weixin Zou
, Qing Tong
, Jingfang Sun
, Lin Dong
, Yu Wen Chen

Department of Chemical and Materials Engineering

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

56 Scopus citations

Abstract

Herein, bimetallic Pt-Ir alloy nanoparticles (NPs) were successfully fabricated by ethylene glycol reduction of H₂PtCl₆·6H₂O and IrCl₃ through a microwave-assisted method. The Pt-Ir alloy NPs were deposited on CeO₂ catalysts for toluene combustion. The Pt_2.5Ir/CeO₂ sample exhibited better catalytic activity at low reaction temperature, compared with monometallic catalysts. The excellent low-temperature catalytic activity was resulted from the interaction between Pt and Ir, richer adsorbed oxygen species and low-temperature reducibility. Furthermore, the in-situ DRIFTS was used to investigate the possible reaction pathway of Pt_2.5Ir/CeO₂. It showed that the broken of benzene ring on Pt_2.5Ir/CeO₂ can be accomplished at lower temperature, resulting in enhancing the deep oxidation of toluene.

Original language	English
Article number	152278
Journal	Applied Surface Science
Volume	580
DOIs	https://doi.org/10.1016/j.apsusc.2021.152278
State	Published - 1 Apr 2022

Keywords

Catalytic oxidation
Cerium dioxide
Pt-Ir alloy nanoparticle
Reaction pathway
Toluene

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10.1016/j.apsusc.2021.152278

Cite this

@article{638bf328bf3148779047cb4d2644619b,

title = "Enhanced low-temperature catalytic performance for toluene combustion of CeO2-supported Pt-Ir alloy catalysts",

abstract = "Herein, bimetallic Pt-Ir alloy nanoparticles (NPs) were successfully fabricated by ethylene glycol reduction of H2PtCl6·6H2O and IrCl3 through a microwave-assisted method. The Pt-Ir alloy NPs were deposited on CeO2 catalysts for toluene combustion. The Pt2.5Ir/CeO2 sample exhibited better catalytic activity at low reaction temperature, compared with monometallic catalysts. The excellent low-temperature catalytic activity was resulted from the interaction between Pt and Ir, richer adsorbed oxygen species and low-temperature reducibility. Furthermore, the in-situ DRIFTS was used to investigate the possible reaction pathway of Pt2.5Ir/CeO2. It showed that the broken of benzene ring on Pt2.5Ir/CeO2 can be accomplished at lower temperature, resulting in enhancing the deep oxidation of toluene.",

keywords = "Catalytic oxidation, Cerium dioxide, Pt-Ir alloy nanoparticle, Reaction pathway, Toluene",

author = "Yue Zhang and Cong Wu and Zhiqiang Wang and Jiawei Ji and Haiqin Wan and Weixin Zou and Qing Tong and Jingfang Sun and Lin Dong and Chen, \{Yu Wen\}",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2022",

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doi = "10.1016/j.apsusc.2021.152278",

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TY - JOUR

T1 - Enhanced low-temperature catalytic performance for toluene combustion of CeO2-supported Pt-Ir alloy catalysts

AU - Zhang, Yue

AU - Wu, Cong

AU - Wang, Zhiqiang

AU - Ji, Jiawei

AU - Wan, Haiqin

AU - Zou, Weixin

AU - Tong, Qing

AU - Sun, Jingfang

AU - Dong, Lin

AU - Chen, Yu Wen

PY - 2022/4/1

Y1 - 2022/4/1

N2 - Herein, bimetallic Pt-Ir alloy nanoparticles (NPs) were successfully fabricated by ethylene glycol reduction of H2PtCl6·6H2O and IrCl3 through a microwave-assisted method. The Pt-Ir alloy NPs were deposited on CeO2 catalysts for toluene combustion. The Pt2.5Ir/CeO2 sample exhibited better catalytic activity at low reaction temperature, compared with monometallic catalysts. The excellent low-temperature catalytic activity was resulted from the interaction between Pt and Ir, richer adsorbed oxygen species and low-temperature reducibility. Furthermore, the in-situ DRIFTS was used to investigate the possible reaction pathway of Pt2.5Ir/CeO2. It showed that the broken of benzene ring on Pt2.5Ir/CeO2 can be accomplished at lower temperature, resulting in enhancing the deep oxidation of toluene.

AB - Herein, bimetallic Pt-Ir alloy nanoparticles (NPs) were successfully fabricated by ethylene glycol reduction of H2PtCl6·6H2O and IrCl3 through a microwave-assisted method. The Pt-Ir alloy NPs were deposited on CeO2 catalysts for toluene combustion. The Pt2.5Ir/CeO2 sample exhibited better catalytic activity at low reaction temperature, compared with monometallic catalysts. The excellent low-temperature catalytic activity was resulted from the interaction between Pt and Ir, richer adsorbed oxygen species and low-temperature reducibility. Furthermore, the in-situ DRIFTS was used to investigate the possible reaction pathway of Pt2.5Ir/CeO2. It showed that the broken of benzene ring on Pt2.5Ir/CeO2 can be accomplished at lower temperature, resulting in enhancing the deep oxidation of toluene.

KW - Catalytic oxidation

KW - Cerium dioxide

KW - Pt-Ir alloy nanoparticle

KW - Reaction pathway

KW - Toluene

UR - https://www.scopus.com/pages/publications/85122056975

U2 - 10.1016/j.apsusc.2021.152278

DO - 10.1016/j.apsusc.2021.152278

M3 - 期刊論文

AN - SCOPUS:85122056975

SN - 0169-4332

VL - 580

JO - Applied Surface Science

JF - Applied Surface Science

M1 - 152278