Naslov
Implementation of Fe and Ag cations in the mordenite-type framework

Autori
Landripet, Ivana ; Antonić Jelić, Tatjana ; Bronić, Josip ; Robić, Marko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
1. Simpozij analitičke atomske spektrometrije : knjiga sažetaka = book of abstracts / Rončević, Sanda ; Nemet, Ivan ; Marciuš, Bernardo - Zagreb : Hrvatsko kemijsko društvo, 2022, 37-37

ISBN
978-953-8334-06-1

Skup
1. Simpozij analitičke atomske spektrometrije

Mjesto i datum
Zagreb, Hrvatska, 30.09.2022. - 01.10.2022

Vrsta sudjelovanja
Poster

Vrsta recenzije
Podatak o recenziji nije dostupan

Ključne riječi
zeolite ; mordenite ; AAS

Sažetak
Mordenite belongs to the so-called “big five” zeolites, which are extensively applied in the industry as catalysts.1 Important issue in catalysis efficiency is the number of active sites (i.e. Lewis and Brønsted acid sites). Numerous studies have shown that the catalytic properties of metal exchanged zeolites are determined by the location and valence state of metal cation and coordination in the zeolite lattice, as well as by the metal content. Mono- and bimetallic systems of Ag, Fe, and Ag–Fe were prepared by the wet impregnation of the H- form of mordenite (Si/Al=11) and consecutive thermal treatment. PXRD patterns show that after all post-synthesis treatments there is no significant influence on the crystallinity of the samples and the only detected phase was mordenite. The results from catalyst characterization by SEM/EDS have shown preserved morphology after wet impregnation and that a certain amount of metals was incorporated into mordenite crystals. The more precise composition of the samples was determined by FAAS, but the technique is not able to detect the position and coordination of the metal cation in the framework. UV–Vis spectroscopy was applied to identify the silver and iron complex species, due to their specific behavior under the light. Also, their photostability was tested by exposing the samples to radiation in the wavelength range of 200 to 1000 nm.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA