Dynamics of Reaction‐Induced Changes of Model‐Type Iron Oxide Phases in the CO2‐Fischer‐Tropsch‐Synthesis
| dc.contributor.author | Aleks, Arinchtein | |
| dc.contributor.author | Meng‐Yang, Ye | |
| dc.contributor.author | Qingxin, Yang | |
| dc.contributor.author | Carsten, Kreyenschulte | |
| dc.contributor.author | Andreas, Wagner | |
| dc.contributor.author | Marvin, Frisch | |
| dc.contributor.author | Angelika, Brückner | |
| dc.contributor.author | Evgenii, Kondratenko | |
| dc.contributor.author | Ralph, Kraehnert | |
| dc.date.accessioned | 2023-02-13T09:59:26Z | |
| dc.date.available | 2023-02-13T09:59:26Z | |
| dc.date.issued | 2022-5-16 | |
| dc.description.abstract | Iron-based catalysts are employed in CO2-FTS due to their ability to convert CO2 into CO in a first step and their selectivity towards higher hydrocarbons in a second CO hydrogenation step. According to the literature, iron carbides represent the active phase for hydrocarbon formation and are claimed to emerge in the presence of CO. We propose nanostructured FeOx films as model systems to assess information about the complex phase transformations during CO2-FTS. Mesoporous hematite, ferrihydrite, maghemite, maghemite/magnetite films were exposed to CO2-FTS atmospheres at 20 bar and 300 °C. Up to three distinct phases were observed depending on the time-on-stream (TOS): a sintered maghemite/magnetite phase, a carbidic core-shell structure, and a low-crystalline, needle-type oxide phase. Our findings indicate that the formation of an intermediary maghemite/magnetite phase, predominant after short TOS (30 h), precedes the evolution of the carbide phase. Yet, even after prolonged TOS (185 h), no full conversion into a bulk carbide is observed. | en |
| dc.description.sponsorship | DFG, 406695057, Fe-basierte Katalysatoren für die Umwandlung von CO2 zu höheren Kohlenwasserstoffen unter dynamischen Bedingungen | |
| dc.description.sponsorship | BMBF, 03EK3052A, Verbundvorhaben ATO-KAT: Atomar dünn beschichtete poröse Elektroden als neuartige Katalysatoren für die Wasser-Elektrolyse: - leitfähige Träger und Elektrochemie - | |
| dc.description.sponsorship | DFG, 358713534, SPP 2080: Katalysatoren und Reaktoren unter dynamischen Betriebsbedingungen für die Energiespeicherung und -wandlung | |
| dc.description.sponsorship | TU Berlin, Open-Access-Mittel – 2022 | |
| dc.identifier.eissn | 1867-3899 | |
| dc.identifier.issn | 1867-3880 | |
| dc.identifier.uri | https://depositonce.tu-berlin.de/handle/11303/18188 | |
| dc.identifier.uri | https://doi.org/10.14279/depositonce-16981 | |
| dc.language.iso | en | |
| dc.relation.ispartof | 10.14279/depositonce-16920 | |
| dc.rights.uri | https://creativecommons.org/licenses/by-nc/4.0/ | |
| dc.subject.ddc | 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften | |
| dc.subject.other | CO2-FTS | en |
| dc.subject.other | iron catalysts | en |
| dc.subject.other | dynamic changes | en |
| dc.subject.other | mesoporous materials | en |
| dc.subject.other | Auger | en |
| dc.subject.other | XPS | en |
| dc.subject.other | STEM-EELS | en |
| dc.title | Dynamics of Reaction‐Induced Changes of Model‐Type Iron Oxide Phases in the CO2‐Fischer‐Tropsch‐Synthesis | en |
| dc.type | Article | |
| dc.type.version | publishedVersion | |
| dcterms.bibliographicCitation.articlenumber | e202200240 | |
| dcterms.bibliographicCitation.doi | 10.1002/cctc.202200240 | |
| dcterms.bibliographicCitation.issue | 14 | |
| dcterms.bibliographicCitation.journaltitle | ChemCatChem | |
| dcterms.bibliographicCitation.originalpublishername | Wiley | |
| dcterms.bibliographicCitation.originalpublisherplace | New York, NY | |
| dcterms.bibliographicCitation.volume | 14 | |
| dcterms.rightsHolder.reference | Creative-Commons-Lizenz | |
| tub.accessrights.dnb | free | |
| tub.affiliation | Fak. 2 Mathematik und Naturwissenschaften::Inst. Chemie::FG Technische Chemie / Elektrokatalyse - Materialien | |
| tub.publisher.universityorinstitution | Technische Universität Berlin |