NH3 treatment of CeO2 nanorods catalyst for improving NH3-SCR of NO

Yuhan Zhou; Shan Ren; Jie Yang; Weizao Liu; Zenghui Su; Zhichao Chen; Mingming Wang; Lin Chen

doi:10.1016/j.joei.2021.05.006

NH₃ treatment of CeO₂ nanorods catalyst for improving NH₃-SCR of NO

Yuhan Zhou
, Shan Ren
, Jie Yang
, Weizao Liu
, Zenghui Su
, Zhichao Chen
, Mingming Wang
, Lin Chen

Chongqing University

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

45 Scopus citations

Abstract

CeO₂ nanorods (CeO₂-NRs) catalyst was prepared and treated with ammonia (NH₃) gas and the effect of NH₃ treatment on CeO₂ nanorods catalyst was also studied for improving NH₃-SCR of NO. And the catalysts were tested for NH₃-SCR of NO during 100–450 °C. The results showed that NH₃ treatment could improve the De-NO efficiency of the catalyst, which increased evidently in the range of about 160–410 °C. XPS results revealed that NH₃ treatment made CeO₂-NRs catalyst produce more Ce³⁺ on its surface, and thereby produced more oxygen vacancies and further promoted SCR reaction. The XRD and H₂-TPR characterization test results indicated that CeO₂ catalyst with NH₃ treatment could destroy its crystallinity and enhance the reducibility. In addition, the in situ DRIFTS results also exhibited more activity functional groups on the surface of N–CeO₂-NRs catalyst than that of CeO₂-NRs catalyst.

Original language	English
Pages (from-to)	199-205
Number of pages	7
Journal	Journal of the Energy Institute
Volume	98
DOIs	https://doi.org/10.1016/j.joei.2021.05.006
State	Published - Oct 2021
Externally published	Yes

Keywords

CeO
NH treatment
NH-SCR
Nanorods
Oxygen vacancies

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.joei.2021.05.006

Cite this

@article{eaa803ae56df48cfafa30c2ede485679,

title = "NH3 treatment of CeO2 nanorods catalyst for improving NH3-SCR of NO",

abstract = "CeO2 nanorods (CeO2-NRs) catalyst was prepared and treated with ammonia (NH3) gas and the effect of NH3 treatment on CeO2 nanorods catalyst was also studied for improving NH3-SCR of NO. And the catalysts were tested for NH3-SCR of NO during 100–450 °C. The results showed that NH3 treatment could improve the De-NO efficiency of the catalyst, which increased evidently in the range of about 160–410 °C. XPS results revealed that NH3 treatment made CeO2-NRs catalyst produce more Ce3+ on its surface, and thereby produced more oxygen vacancies and further promoted SCR reaction. The XRD and H2-TPR characterization test results indicated that CeO2 catalyst with NH3 treatment could destroy its crystallinity and enhance the reducibility. In addition, the in situ DRIFTS results also exhibited more activity functional groups on the surface of N–CeO2-NRs catalyst than that of CeO2-NRs catalyst.",

keywords = "CeO, NH treatment, NH-SCR, Nanorods, Oxygen vacancies",

author = "Yuhan Zhou and Shan Ren and Jie Yang and Weizao Liu and Zenghui Su and Zhichao Chen and Mingming Wang and Lin Chen",

note = "Publisher Copyright: {\textcopyright} 2021 Energy Institute",

year = "2021",

month = oct,

doi = "10.1016/j.joei.2021.05.006",

language = "英语",

volume = "98",

pages = "199--205",

journal = "Journal of the Energy Institute",

issn = "1743-9671",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - NH3 treatment of CeO2 nanorods catalyst for improving NH3-SCR of NO

AU - Zhou, Yuhan

AU - Ren, Shan

AU - Yang, Jie

AU - Liu, Weizao

AU - Su, Zenghui

AU - Chen, Zhichao

AU - Wang, Mingming

AU - Chen, Lin

PY - 2021/10

Y1 - 2021/10

N2 - CeO2 nanorods (CeO2-NRs) catalyst was prepared and treated with ammonia (NH3) gas and the effect of NH3 treatment on CeO2 nanorods catalyst was also studied for improving NH3-SCR of NO. And the catalysts were tested for NH3-SCR of NO during 100–450 °C. The results showed that NH3 treatment could improve the De-NO efficiency of the catalyst, which increased evidently in the range of about 160–410 °C. XPS results revealed that NH3 treatment made CeO2-NRs catalyst produce more Ce3+ on its surface, and thereby produced more oxygen vacancies and further promoted SCR reaction. The XRD and H2-TPR characterization test results indicated that CeO2 catalyst with NH3 treatment could destroy its crystallinity and enhance the reducibility. In addition, the in situ DRIFTS results also exhibited more activity functional groups on the surface of N–CeO2-NRs catalyst than that of CeO2-NRs catalyst.

AB - CeO2 nanorods (CeO2-NRs) catalyst was prepared and treated with ammonia (NH3) gas and the effect of NH3 treatment on CeO2 nanorods catalyst was also studied for improving NH3-SCR of NO. And the catalysts were tested for NH3-SCR of NO during 100–450 °C. The results showed that NH3 treatment could improve the De-NO efficiency of the catalyst, which increased evidently in the range of about 160–410 °C. XPS results revealed that NH3 treatment made CeO2-NRs catalyst produce more Ce3+ on its surface, and thereby produced more oxygen vacancies and further promoted SCR reaction. The XRD and H2-TPR characterization test results indicated that CeO2 catalyst with NH3 treatment could destroy its crystallinity and enhance the reducibility. In addition, the in situ DRIFTS results also exhibited more activity functional groups on the surface of N–CeO2-NRs catalyst than that of CeO2-NRs catalyst.

KW - CeO

KW - NH treatment

KW - NH-SCR

KW - Nanorods

KW - Oxygen vacancies

UR - https://www.scopus.com/pages/publications/85109163933

U2 - 10.1016/j.joei.2021.05.006

DO - 10.1016/j.joei.2021.05.006

M3 - 文章

AN - SCOPUS:85109163933

SN - 1743-9671

VL - 98

SP - 199

EP - 205

JO - Journal of the Energy Institute

JF - Journal of the Energy Institute

ER -