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

39 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

Access to Document

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",

month = apr,

day = "1",

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

language = "???core.languages.en_GB???",

volume = "580",

journal = "Applied Surface Science",

issn = "0169-4332",

}

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 - http://www.scopus.com/inward/record.url?scp=85122056975&partnerID=8YFLogxK

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

ER -