Isolated Co2+ on the surface of diluted CoOMgO solid solutions reversibly binds oxygen, forming molecular species characterized by OO stretching frequencies in the 1160 - 1015 cm-1 range. On the basis of isotope substitution experiments and by comparison with homogeneous analogues, it is concluded that O2 is adsorbed in the O-12 superoxide form and that the diluted MgOCoO solid solutions are interesting examples of heterogeneous oxygen carriers and activators.

Surface dioxygen adducts on MgO-CoO solid solutions: analogy with cobalt-based homogeneous oxygen carriers

ZECCHINA, Adriano;SPOTO, Giuseppe;COLUCCIA, Salvatore
1982

Abstract

Isolated Co2+ on the surface of diluted CoOMgO solid solutions reversibly binds oxygen, forming molecular species characterized by OO stretching frequencies in the 1160 - 1015 cm-1 range. On the basis of isotope substitution experiments and by comparison with homogeneous analogues, it is concluded that O2 is adsorbed in the O-12 superoxide form and that the diluted MgOCoO solid solutions are interesting examples of heterogeneous oxygen carriers and activators.
14
351
355
Magnesium oxide; Cobalt oxide; solid solutions; oxygen; carriers; spectroscopy; adsorption; surfaces
A. Zecchina; G. Spoto; S. Coluccia
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/116063
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 40
  • ???jsp.display-item.citation.isi??? ND
social impact