Cobalt particle size effects in Fischer–Tropsch synthesis: structural and in situ spectroscopic characterisation on reverse micelle-synthesised Co/ITQ-2 model catalysts

CO-FTIR studies in situ and on working Co/ITQ-2 model catalysts suggest a C-driven surface cobalt reconstruction under Fischer–Tropsch synthesis, irrespective of Co particle size. Interfacial metal-support Co δ+ sites are favoured due to nanoparticle flattening, and are proposed as responsible for t...

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Veröffentlicht in:	Journal of catalysis 2009-08, Vol.266 (1), p.129-144
Hauptverfasser:	Prieto, Gonzalo, Martínez, Agustín, Concepción, Patricia, Moreno-Tost, Ramón
Format:	Artikel
Sprache:	eng
Schlagworte:	At work CO-FTIR Catalysis Catalysts Chemistry Co/ITQ-2 Cobalt Colloidal state and disperse state Exact sciences and technology Fischer–Tropsch General and physical chemistry Ion-exchange Metal surface reconstruction Micelles. Thin films Model catalysts Nanoparticles Particle size effects Physical and chemical studies. Granulometry. Electrokinetic phenomena Spectrum analysis Surface physical chemistry Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry Zeolites: preparations and properties
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Beschreibung
Zusammenfassung:	CO-FTIR studies in situ and on working Co/ITQ-2 model catalysts suggest a C-driven surface cobalt reconstruction under Fischer–Tropsch synthesis, irrespective of Co particle size. Interfacial metal-support Co δ+ sites are favoured due to nanoparticle flattening, and are proposed as responsible for the decreased TOF for particles of size
ISSN:	0021-9517 1090-2694
DOI:	10.1016/j.jcat.2009.06.001