Collect. Czech. Chem. Commun. 2001, 66, 685-692

FTIR Study of Metal Zeolites. Determination of Co(II) Cation in Co-Beta Zeolite by Deuterated Acetonitrile Adsorption

Satish Kuriyavar, Oleg Bortnovsky, Zdena Tvarůžková and Zdeněk Sobalík*

J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejškova 3, CZ-18223 Prague 8, Czech Republic


FTIR spectra of deuterated acetonitrile (ACD) adsorbed on Co-Beta zeolite were investigated. By analysing the IR region of zeolite framework perturbation, the conditions for the prevailing presence of the Co-ACD complex with 1 : 1 stochiometry were established. Analysis of the C≡N region with overlapping bands OH···ACD (2 297 cm-1), and Lewis(Al)···ACD (2 325 cm-1), provided a value of molar absorption coefficient for a band of Co-ACD complex in Co-Beta at 2 310 cm-1 equal to 7.12 ± 0.3 cm μmol-1.

Keywords: Deuterated acetonitrile; Cobalt; Zeolites; Co-Beta; FTIR spectroscopy; Cationic sites; Heterogeneous catalysis.

References: 19 live references.