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High-performance FeaTibOx catalyst loaded on ceramic filter for NOx reduction

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Bibliographische Detailangaben
Zeitschriftentitel: Materials Research Express
Personen und Körperschaften: Wu, Ruian, Jin, Jiang, Li, Kun, Zhao, Lei, Zhang, Hua
In: Materials Research Express, 8, 2021, 4, S. 045509
Format: E-Article
Sprache: Unbestimmt
veröffentlicht:
IOP Publishing
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Zusammenfassung: <jats:title>Abstract</jats:title> <jats:p>The Fe<jats:sub>a</jats:sub>Ti<jats:sub>b</jats:sub>O<jats:sub>x</jats:sub> catalyst was loaded into the pores of porous ceramic using impregnation method for removing nitrogen oxides with selective catalytic reduction (SCR) technology. The catalytic performance over Fe<jats:sub>a</jats:sub>Ti<jats:sub>b</jats:sub>O<jats:sub>x</jats:sub> catalyst was studied in detail. The Fe<jats:sub>6</jats:sub>Ti<jats:sub>1</jats:sub>O<jats:sub>x</jats:sub> catalyst displayed more than 95% NO<jats:sub>x</jats:sub> conversion within the range of 280 °C–400 °C, and still maintained 97% NO<jats:sub>x</jats:sub> conversion when 300 ppm SO<jats:sub>2</jats:sub> and 10 vol.% water vapor were introduced at the testing temperature of 300 °C. The influence factors (including filtration velocity, NH<jats:sub>3</jats:sub>/NO mole ratio and oxygen concentration) for NO<jats:sub>x</jats:sub> conversion over Fe<jats:sub>6</jats:sub>Ti<jats:sub>1</jats:sub>O<jats:sub>x</jats:sub> catalyst were also studied. The suitable NH<jats:sub>3</jats:sub>/NO mole ratio and oxygen concentration was 0.9 and 6%, respectively. The XRD, N<jats:sub>2</jats:sub>-BET, H<jats:sub>2</jats:sub>-TPR, NH<jats:sub>3</jats:sub>-TPD and XPS were employed to investigate physicochemical property of the Fe<jats:sub>a</jats:sub>Ti<jats:sub>b</jats:sub>O<jats:sub>x</jats:sub> catalyst. The results illustrated that Fe<jats:sub>6</jats:sub>Ti<jats:sub>1</jats:sub>O<jats:sub>x</jats:sub> catalyst has hematite Fe<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> and TiO<jats:sub>2</jats:sub> structure, better redox properties and stronger surface acid.</jats:p>
Umfang: 045509
ISSN: 2053-1591
DOI: 10.1088/2053-1591/abfa48