An EXAFS study on the so-called {open_quotes}Co-Mo-S{close_quotes} phase in Co/C and CoMo/C, compared with a Moessbauer emission spectroscopy study

Journal Article · Thu Jun 25 00:00:00 EDT 1992 · Journal of Physical Chemistry

DOI:https://doi.org/10.1021/j100192a048· OSTI ID:457792

Craje, M W.J.; Kraan, A.M. van der ^[1]; Louwers, S P.A.; Prins, R ^[2]; Beer, V H.J. de ^[3]

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1. Delft Univ. of Technology (Netherlands)
2. ETH Zentrum, Zuerich (Switzerland)
3. Eindhoven Univ. of Technology (Netherlands)

EXAFS was used in this paper to study 4 sulfided catalysts that have the same structure as their {sup 57}Co counterparts characterized by Mossbauer emission spectroscopy. The {open_quotes}Co-Mo-S{close_quotes} phase in Co/C is similar to CoMo/C due to a very highly dispersed Co species. Without Mo, the sulfidic Co results in a Co{sub 9}S{sub 8} phase during sulfidation at 673K, Mo prevents Co sintering in CoMo/C. 37 refs., 6 figs., 2 tabs.

• Sponsoring Organization: USDOE
• OSTI ID: 457792
• Journal Information: Journal of Physical Chemistry, Vol. 96, Issue 13; Other Information: PBD: 25 Jun 1992
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
36 MATERIALS SCIENCE
66 PHYSICS
SULFIDES
X-RAY SPECTROSCOPY
COBALT SULFIDES
AQUEOUS SOLUTIONS
EMISSION SPECTROSCOPY