The properties of Co
2+
in zeolites CoX and CoY and their interaction with CO, NO, and propene were fol-
lowed. The IR experiments of CO and NO informed on the electron acceptor properties of Co
2+
sites and
the influence of framework composition and of geometry of Co
2+
environment on the properties of Co
2+
.It
has been found, that the activation of CO and NO is realized mostly by
p
back donation, on the other hand,
the activation of C
@
C double bond in propene is realized by
p
donation. The strength of molecules to Co
2+
bonding was followed in desorption experiments. It has been found, that
r
donation in the case of CO and
p
donation has more important impact to the strength of molecule to Co
2+
bonding.
keywords in English:
Co-zeolites, NO adsorption, CO adsorption, IR spectroscopy
departmental parameterization:
20
affiliation:
Wydział Chemii : Zakład Chemii Analitycznej, Wydział Chemii : Zakład Chemii Nieorganicznej