In-Situ Electron Energy Loss Spectroscopy Study of Mn-Promoted Co/TiO2 Fischer–Tropsch Catalysts

Autor:	Yuan Zhao, John R. Regalbuto, Theresa E. Feltes, Randall J. Meyer, Robert F. Klie
Rok vydání:	2011
Předmět:	chemistry.chemical_classification Chemistry Electron energy loss spectroscopy Nanotechnology Fischer–Tropsch process General Chemistry Heterogeneous catalysis Catalysis Hydrocarbon Chemical engineering Scanning transmission electron microscopy Particle Syngas
Zdroj:	Catalysis Letters. 141:641-648
ISSN:	1572-879X 1011-372X
DOI:	10.1007/s10562-011-0559-5
Popis:	The conversion of synthesis gas to hydrocarbon fuels by Co catalysts through the Fischer–Tropsch process has received renewed attention particularly with regard to the role of promoters. In this letter, we utilize scanning transmission electron microscopy imaging and electron energy-loss spectroscopy to elucidate the interaction between the Mn promoter, the Co nano-catalysts, and the TiO2 support. In-situ heating experiments show the diffusion of Mn and Ti-support onto the Co particle under reducing conditions. Changes in the elemental distribution during in-situ reduction at 350 °C of as-prepared Mn-promoted Co catalysts on TiO2. While the morphology of the Co particles does not change, the Mn appears to be distributed more homogeneously on the Co surface and some of the TiO2 support has migrated onto the Co particle during in-situ heating (broken line circle).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::11835f5068506646a7bd7f1a48fe446f https://doi.org/10.1007/s10562-011-0559-5 Zobrazit plný text záznamu Plný text ve formátu PDF