title: Quantitative aspects of the identification of Fe(ii) moieties in ZSM-5 zeolites with various pore hierarchies.
abstract: This work was attempted in order to provide a new and well-established approach for the quantification of Fe(2+) sites in zeolites. The experimental procedure was based on carbon monoxide and nitrogen monoxide sorption in Fe-exchanged ZSM-5 zeolites with different pore hierarchies, which was followed by IR spectroscopy. The values of the absorption coefficients of the respective monocarbonyl Fe(2+)(CO) and mononitrosyl Fe(2+)(NO) IR bands were obtained. In turn, the concentrations of Fe(ii) moieties of various kinds were calculated and discussed with regard to the composition (Si/Al and Fe/Al ratios) of the zeolites studied.
authors.affiliation: Faculty of Chemistry, Jagiellonian University in Kraków, 3 Ingarden St., 30-060 Kraków, Poland. kinga.goramarek@gmail.com.
authors.forename: Kinga
authors.initials: K
authors.lastname: Góra-Marek
authors.forename: Kamila
authors.initials: K
authors.lastname: Brylewska
authors.forename: Karolina A
authors.initials: KA
authors.lastname: Tarach
authors.forename: Minkee
authors.initials: M
authors.lastname: Choi