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Microwave-promoted low-temperature activity of WO3–CeO2 for selective catalytic reduction of NO by NH3.

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Title: Microwave-promoted low-temperature activity of WO3–CeO2 for selective catalytic reduction of NO by NH3.
Authors: Cheng, Xiaoqian1 (AUTHOR), Song, Boxuan1 (AUTHOR), Cheng, Yao1 (AUTHOR), Li, Xiangru1 (AUTHOR), Cheng, Zhiwei1 (AUTHOR), Kou, Mengyi2 (AUTHOR), Song, Liyun1 (AUTHOR) songly@bjut.edu.cn, He, Hong1 (AUTHOR), Zhang, Guizhen2 (AUTHOR), Zhang, Ningqiang3 (AUTHOR) zhangningqiang@mail.neu.edu.cn
Source: Journal of Materials Science. Jun2026, Vol. 61 Issue 22, p15540-15556. 17p.
Subjects: Catalytic reduction, Catalysts, Catalysis, Catalyst structure, Abatement (Atmospheric chemistry), Lewis acidity
Abstract: In this study, a series of WO3–CeO2 catalysts was prepared by precipitation methods for selective catalyst reduction (SCR) of NO by NH3. The promotion of WO3 doping synergistically acted with microwave on the performance over CeO2-based catalysts was systematically investigated. The results demonstrated the significant enhancement in the low-temperature NH3-SCR performance of the catalysts with WO3 doping. Among them, the 20WO3–CeO2 catalyst achieved over 90% NOx conversion in the temperature range of 120–260 °C. After multiple cyclic tests under microwave irradiation, it reached 95% NO conversion at 140 °C and maintained up to 200 °C. The structural and physicochemical properties of the catalysts were characterized by techniques, such as SEM, XRD, Raman, XPS, H2-TPR and NH3-TPD. The characterization results confirmed a strong interaction between CeO2 and WO3 in the catalysts. The WO3 species existed mainly in an amorphous or highly dispersed state, providing abundant acidic sites. The 20WO3–CeO2 catalyst exhibited a higher specific surface area and a greater concentration of Ce3+ species. After cyclic evaluations in the microwave field, no significant change was detected in the structure, specific surface area and hydrogen consumption of the catalysts, suggesting the remarkable stability in both structure and properties. The synergistic "microwave activation" effect with WO3–CeO2 catalysts optimized the redox properties and surface acidity, thereby achieving highly efficient and stable DeNOx performance at low temperatures. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Materials Science is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 193394414
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  Label: Title
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  Data: Microwave-promoted low-temperature activity of WO<subscript>3</subscript>–CeO<subscript>2</subscript> for selective catalytic reduction of NO by NH<subscript>3</subscript>.
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  Data: <searchLink fieldCode="AR" term="%22Cheng%2C+Xiaoqian%22">Cheng, Xiaoqian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Song%2C+Boxuan%22">Song, Boxuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cheng%2C+Yao%22">Cheng, Yao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Xiangru%22">Li, Xiangru</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cheng%2C+Zhiwei%22">Cheng, Zhiwei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kou%2C+Mengyi%22">Kou, Mengyi</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Song%2C+Liyun%22">Song, Liyun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> songly@bjut.edu.cn</i><br /><searchLink fieldCode="AR" term="%22He%2C+Hong%22">He, Hong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Guizhen%22">Zhang, Guizhen</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Ningqiang%22">Zhang, Ningqiang</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> zhangningqiang@mail.neu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Materials+Science%22">Journal of Materials Science</searchLink>. Jun2026, Vol. 61 Issue 22, p15540-15556. 17p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Catalytic+reduction%22">Catalytic reduction</searchLink><br /><searchLink fieldCode="DE" term="%22Catalysts%22">Catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Catalysis%22">Catalysis</searchLink><br /><searchLink fieldCode="DE" term="%22Catalyst+structure%22">Catalyst structure</searchLink><br /><searchLink fieldCode="DE" term="%22Abatement+%28Atmospheric+chemistry%29%22">Abatement (Atmospheric chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Lewis+acidity%22">Lewis acidity</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In this study, a series of WO3–CeO2 catalysts was prepared by precipitation methods for selective catalyst reduction (SCR) of NO by NH3. The promotion of WO3 doping synergistically acted with microwave on the performance over CeO2-based catalysts was systematically investigated. The results demonstrated the significant enhancement in the low-temperature NH3-SCR performance of the catalysts with WO3 doping. Among them, the 20WO3–CeO2 catalyst achieved over 90% NOx conversion in the temperature range of 120–260 °C. After multiple cyclic tests under microwave irradiation, it reached 95% NO conversion at 140 °C and maintained up to 200 °C. The structural and physicochemical properties of the catalysts were characterized by techniques, such as SEM, XRD, Raman, XPS, H2-TPR and NH3-TPD. The characterization results confirmed a strong interaction between CeO2 and WO3 in the catalysts. The WO3 species existed mainly in an amorphous or highly dispersed state, providing abundant acidic sites. The 20WO3–CeO2 catalyst exhibited a higher specific surface area and a greater concentration of Ce3+ species. After cyclic evaluations in the microwave field, no significant change was detected in the structure, specific surface area and hydrogen consumption of the catalysts, suggesting the remarkable stability in both structure and properties. The synergistic "microwave activation" effect with WO3–CeO2 catalysts optimized the redox properties and surface acidity, thereby achieving highly efficient and stable DeNOx performance at low temperatures. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Materials Science is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1007/s10853-026-12696-x
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      – Code: eng
        Text: English
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        PageCount: 17
        StartPage: 15540
    Subjects:
      – SubjectFull: Catalytic reduction
        Type: general
      – SubjectFull: Catalysts
        Type: general
      – SubjectFull: Catalysis
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      – SubjectFull: Catalyst structure
        Type: general
      – SubjectFull: Abatement (Atmospheric chemistry)
        Type: general
      – SubjectFull: Lewis acidity
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    Titles:
      – TitleFull: Microwave-promoted low-temperature activity of WO3–CeO2 for selective catalytic reduction of NO by NH3.
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            NameFull: Cheng, Xiaoqian
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            NameFull: Song, Boxuan
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            NameFull: Cheng, Yao
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            NameFull: Cheng, Zhiwei
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            – D: 08
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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