Shen, Jun ; Hess, Christian (2024)
Controlling the dispersion of ceria using nanoconfinement: application to CeO₂/SBA-15 catalysts for NH₃-SCR.
In: Materials Advances, 2021, 2 (22)
doi: 10.26083/tuprints-00026668
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
Mesoporous silicas, such as SBA-15, with their high and inert surface area, constitute promising support materials for catalytic applications. However, loading the active phase onto porous materials to give high dispersion and even distribution is still a great challenge. In the presence of the template P123, ceria crystal growth can be controlled by nanoconfinement effects. We have applied in situ Raman, DRIFT, and DR UV-vis spectroscopies to elucidate the mechanism of template-assisted synthesis of ceria/SBA-15 catalysts for NH₃-SCR applications. The co-decomposition of P123 and cerium precursor shows a catalytic interaction, resulting in a change of ceria nucleation and growth behavior during the calcination process. Based on this knowledge, we have developed an improved catalyst synthesis by combining the nanoconfinement effects of P123 and the use of an inert atmosphere, resulting in an improved ceria dispersion on SBA-15 and superior NH₃-SCR performance. Our results highlight the significance of the calcination process for defining catalyst properties and the use of in situ spectroscopy for rational synthesis of supported catalysts.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Shen, Jun ; Hess, Christian |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Controlling the dispersion of ceria using nanoconfinement: application to CeO₂/SBA-15 catalysts for NH₃-SCR |
| Sprache: | Englisch |
| Publikationsjahr: | 24 April 2024 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2021 |
| Ort der Erstveröffentlichung: | Cambridge |
| Verlag: | Royal Society of Chemistry |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Materials Advances |
| Jahrgang/Volume einer Zeitschrift: | 2 |
| (Heft-)Nummer: | 22 |
| DOI: | 10.26083/tuprints-00026668 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/26668 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichungsservice |
| Kurzbeschreibung (Abstract): | Mesoporous silicas, such as SBA-15, with their high and inert surface area, constitute promising support materials for catalytic applications. However, loading the active phase onto porous materials to give high dispersion and even distribution is still a great challenge. In the presence of the template P123, ceria crystal growth can be controlled by nanoconfinement effects. We have applied in situ Raman, DRIFT, and DR UV-vis spectroscopies to elucidate the mechanism of template-assisted synthesis of ceria/SBA-15 catalysts for NH₃-SCR applications. The co-decomposition of P123 and cerium precursor shows a catalytic interaction, resulting in a change of ceria nucleation and growth behavior during the calcination process. Based on this knowledge, we have developed an improved catalyst synthesis by combining the nanoconfinement effects of P123 and the use of an inert atmosphere, resulting in an improved ceria dispersion on SBA-15 and superior NH₃-SCR performance. Our results highlight the significance of the calcination process for defining catalyst properties and the use of in situ spectroscopy for rational synthesis of supported catalysts. |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-266686 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Fachbereich(e)/-gebiet(e): | 07 Fachbereich Chemie 07 Fachbereich Chemie > Eduard Zintl-Institut 07 Fachbereich Chemie > Eduard Zintl-Institut > Fachgebiet Physikalische Chemie |
| Hinterlegungsdatum: | 24 Apr 2024 12:35 |
| Letzte Änderung: | 25 Apr 2024 07:06 |
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| Suche nach Titel in: | TUfind oder in Google |
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- Controlling the dispersion of ceria using nanoconfinement: application to CeO₂/SBA-15 catalysts for NH₃-SCR. (deposited 24 Apr 2024 12:35) [Gegenwärtig angezeigt]
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