A Time‐Resolved In Situ Quick‐XAS Investigation of Thermal Activation of Fischer–Tropsch Silica‐Supported Cobalt Catalysts | Zendy

Hong Jingping | Zendy; Marceau Eric | Zendy; Khodakov Andrei Y. | Zendy; GribovalConstant Anne | Zendy; La Fontaine Camille | Zendy; Briois Valérie | Zendy

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A Time‐Resolved In Situ Quick‐XAS Investigation of Thermal Activation of Fischer–Tropsch Silica‐Supported Cobalt Catalysts

Author(s) -

Hong Jingping,

Marceau Eric,

Khodakov Andrei Y.,

GribovalConstant Anne,

La Fontaine Camille,

Briois Valérie

Publication year - 2012

Publication title -

chemistry – a european journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.687

H-Index - 242

eISSN - 1521-3765

pISSN - 0947-6539

DOI - 10.1002/chem.201103509

Subject(s) - cobalt , x ray absorption spectroscopy , fischer–tropsch process , catalysis , cobalt oxide , decomposition , thermal decomposition , absorption spectroscopy , oxide , metal , inorganic chemistry , dispersion (optics) , chemistry , materials science , metallurgy , organic chemistry , optics , physics , selectivity

Quick X‐ray absorption spectroscopy (XAS) provides quantitative information about the composition of supported metal phases during catalyst activation. Decomposition of SiO 2 ‐supported cobalt nitrate in diluted NO leads to the rapid formation of cobalt(II) hydroxynitrates below 100 °C. Their decomposition starts progressively between 110 and 170 °C to give cobalt oxide nuclei, which contribute to the enhancement of the metal oxide dispersion (see figure).

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