Catalytic enhancement of small sizes of CeO2 additives on Ir/Al2O3 for toluene oxidation

Zhiqiang Wang; Lixin Zhang; Jiawei Ji; Yuchao Wu; Yandi Cai; Xiaojiang Yao; Xianrui Gu; Yan Xiong; Haiqin Wan; Lin Dong; Yu Wen Chen

doi:10.1016/j.apsusc.2021.151200

Catalytic enhancement of small sizes of CeO₂ additives on Ir/Al₂O₃ for toluene oxidation

Zhiqiang Wang, Lixin Zhang, Jiawei Ji, Yuchao Wu, Yandi Cai, Xiaojiang Yao, Xianrui Gu, Yan Xiong, Haiqin Wan, Lin Dong, Yu Wen Chen

Department of Chemical and Materials Engineering

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

26 Scopus citations

Abstract

Catalytic combustion of VOCs is one of the most promising technologies for removal of VOCs. Developing new and highly performance catalyst is very important for the application of this technology. Here, we report the fabrication of catalysts Ir/Ce/γ-Al₂O₃ for complete oxidation of toluene, via confining the particles size of CeO₂ additives. The catalysts are analyzed by XRD, H₂-TPR, O₂-TPD, TEM, HRTEM, XPS, Raman and in-situ DRIFTS. The catalyst Ir/Ce(A)/Al₂O₃ contains small CeO₂ nanoparticles (<5 nm) loaded with ultrafine nanoparticles of Ir⁰ (<2 nm), exhibiting higher catalytic activity for toluene oxidation than the control catalyst with large CeO₂ additives. The results from XRD, TEM, Raman and XPS show the formation of a strong interaction between the IrO₂ and the small CeO₂ nanoparticles, resulting in the enhanced catalytic activity. This novel means for synthesizing the iridium-based catalyst promises the catalytic oxidation of VOCs.

Original language	English
Article number	151200
Journal	Applied Surface Science
Volume	571
DOIs	https://doi.org/10.1016/j.apsusc.2021.151200
State	Published - 1 Jan 2022

Keywords

Ceria additives
Interaction
Iridium catalyst
Toluene catalytic oxidation

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10.1016/j.apsusc.2021.151200

Cite this

@article{515d6aba185a43d18387b6be3b7b1f85,

title = "Catalytic enhancement of small sizes of CeO2 additives on Ir/Al2O3 for toluene oxidation",

abstract = "Catalytic combustion of VOCs is one of the most promising technologies for removal of VOCs. Developing new and highly performance catalyst is very important for the application of this technology. Here, we report the fabrication of catalysts Ir/Ce/γ-Al2O3 for complete oxidation of toluene, via confining the particles size of CeO2 additives. The catalysts are analyzed by XRD, H2-TPR, O2-TPD, TEM, HRTEM, XPS, Raman and in-situ DRIFTS. The catalyst Ir/Ce(A)/Al2O3 contains small CeO2 nanoparticles (<5 nm) loaded with ultrafine nanoparticles of Ir0 (<2 nm), exhibiting higher catalytic activity for toluene oxidation than the control catalyst with large CeO2 additives. The results from XRD, TEM, Raman and XPS show the formation of a strong interaction between the IrO2 and the small CeO2 nanoparticles, resulting in the enhanced catalytic activity. This novel means for synthesizing the iridium-based catalyst promises the catalytic oxidation of VOCs.",

keywords = "Ceria additives, Interaction, Iridium catalyst, Toluene catalytic oxidation",

author = "Zhiqiang Wang and Lixin Zhang and Jiawei Ji and Yuchao Wu and Yandi Cai and Xiaojiang Yao and Xianrui Gu and Yan Xiong and Haiqin Wan and Lin Dong and Chen, {Yu Wen}",

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T1 - Catalytic enhancement of small sizes of CeO2 additives on Ir/Al2O3 for toluene oxidation

AU - Wang, Zhiqiang

AU - Zhang, Lixin

AU - Ji, Jiawei

AU - Wu, Yuchao

AU - Cai, Yandi

AU - Yao, Xiaojiang

AU - Gu, Xianrui

AU - Xiong, Yan

AU - Wan, Haiqin

AU - Dong, Lin

AU - Chen, Yu Wen

PY - 2022/1/1

Y1 - 2022/1/1

N2 - Catalytic combustion of VOCs is one of the most promising technologies for removal of VOCs. Developing new and highly performance catalyst is very important for the application of this technology. Here, we report the fabrication of catalysts Ir/Ce/γ-Al2O3 for complete oxidation of toluene, via confining the particles size of CeO2 additives. The catalysts are analyzed by XRD, H2-TPR, O2-TPD, TEM, HRTEM, XPS, Raman and in-situ DRIFTS. The catalyst Ir/Ce(A)/Al2O3 contains small CeO2 nanoparticles (<5 nm) loaded with ultrafine nanoparticles of Ir0 (<2 nm), exhibiting higher catalytic activity for toluene oxidation than the control catalyst with large CeO2 additives. The results from XRD, TEM, Raman and XPS show the formation of a strong interaction between the IrO2 and the small CeO2 nanoparticles, resulting in the enhanced catalytic activity. This novel means for synthesizing the iridium-based catalyst promises the catalytic oxidation of VOCs.

AB - Catalytic combustion of VOCs is one of the most promising technologies for removal of VOCs. Developing new and highly performance catalyst is very important for the application of this technology. Here, we report the fabrication of catalysts Ir/Ce/γ-Al2O3 for complete oxidation of toluene, via confining the particles size of CeO2 additives. The catalysts are analyzed by XRD, H2-TPR, O2-TPD, TEM, HRTEM, XPS, Raman and in-situ DRIFTS. The catalyst Ir/Ce(A)/Al2O3 contains small CeO2 nanoparticles (<5 nm) loaded with ultrafine nanoparticles of Ir0 (<2 nm), exhibiting higher catalytic activity for toluene oxidation than the control catalyst with large CeO2 additives. The results from XRD, TEM, Raman and XPS show the formation of a strong interaction between the IrO2 and the small CeO2 nanoparticles, resulting in the enhanced catalytic activity. This novel means for synthesizing the iridium-based catalyst promises the catalytic oxidation of VOCs.

KW - Ceria additives

KW - Interaction

KW - Iridium catalyst

KW - Toluene catalytic oxidation

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U2 - 10.1016/j.apsusc.2021.151200

DO - 10.1016/j.apsusc.2021.151200

M3 - 期刊論文

AN - SCOPUS:85115034477

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VL - 571

JO - Applied Surface Science

JF - Applied Surface Science

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