Visualizing Phase Evolution of Co2C for Efficient Fischer-Tropsch to Olefins

Visualizing Phase Evolution of Co2C for Efficient Fischer-Tropsch to Olefins

© 2024 The Author(s). Advanced Materials published by Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 36(2024), 35 vom: 27. Aug., Seite e2404046
1. Verfasser: Hong, Xiaoling (VerfasserIn)
Weitere Verfasser: Zhao, Qiao, Chen, Yanping, Yu, Zhibin, Zhou, Mengzhen, Chen, Yan, Luo, Wenhao, Wang, Chang, Ta, Na, Li, Haitao, Ye, Runping, Zu, Xiaotao, Liu, Wei, Liu, Jian
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article Co2C nanomaterials Fischer–Tropsch synthesis in situ characterization lower olefins mass transfer
Beschreibung
Zusammenfassung:© 2024 The Author(s). Advanced Materials published by Wiley‐VCH GmbH.
Cobalt carbide (Co2C) possesses high catalytic efficiency Fischer-Tropsch synthesis (FTS), while the products selectivity appears sensitive to crystallography geometry. Since the Anderson-Schulz-Flory (ASF) distribution in FTS is broken through fabricating facetted Co2C nanocrystals, yet the underlying mechanism of Co2C crystallization remains unclarified suffering from sophisticated catalyst composition involving promoter agents. Herein, the synthesis of high-purity single-crystal nanoprisms (Co2C-p) for highly efficient FTS is reported to lower olefins. Through comprehensive microstructure analysis, e.g., high-resolution TEM, in situ TEM and electron diffraction, as well as finite element simulation of gas flow field, for the first time the full roadmap of forming catalytic active cobalt carbides is disclosed, starting from reduction of Co3O4 precursor to CoO intermediate, then carburization into Co2C-s and subsequent ripening growth into Co2C-p. This gas-induced engineering of crystal phase provides a new synthesis strategy, with many new possibilities for precise design of metal-based catalyst for diverse catalytic applications
Beschreibung:Date Revised 28.08.2024
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202404046