Szczegóły publikacji

Opis bibliograficzny

Aspects of Fe-incorporation into $CaTiO_3-SrTiO_3$ perovskites and their catalytic application for ammonia SCO/SCR / Paulina GWÓŹDŹ, Agnieszka ŁĄCZ, Sylwia Górecka, Kateřina Pacultová, Kamil Górecki, Lucie Obalová, Ewa DROŻDŻ // Molecules [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 1420-3049. — 2024 — vol. 29 iss. 23 art. no. 5603, s. 1–18. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 16–18, Abstr. — Publikacja dostępna online od: 2024-11-27

Autorzy (7)

Słowa kluczowe

ironperovskitesXANESNOx reductionammonia oxidation

Dane bibliometryczne

ID BaDAP157220
Data dodania do BaDAP2025-01-14
Tekst źródłowyURL
DOI10.3390/molecules29235603
Rok publikacji2024
Typ publikacjiartykuł w czasopiśmie
Otwarty dostęptak
Creative Commons
Czasopismo/seriaMolecules

Abstract

Perovskite materials in the CaTiO3-SrTiO3 system doped with different amounts of iron (1, 2 and 5 mol.%) and various Ca/Sr ratios were prepared by the modified citrate method. Additionally, the materials with 0.05 deficiency in strontium/calcium sublattice and 5 mol.% of Fe were also synthesised. The materials were subjected to structural (XRD, XANES) and microstructural (SEM) characterisation, as well as the analysis of susceptibility to reduction/oxidation processes. The structural analysis indicates a lack of iron-containing phases; thus, an incorporation of Fe into the perovskite structure was postulated. Additionally, the oxidation state of iron in the perovskite structure changes with the dopant amount. The temperature-programmed reduction measurements showed partial reversibility of the reduction processes. For the materials with the highest iron amount, the catalytic tests in NH3-SCO and NH3-SCR reactions were carried out. The materials showed high catalytic activity and high selectivity to N2 in the NH3-SCR process; however, they were inactive in NH3-SCO.