Study of Electric and Magnetic Properties of Iron-Modified MFI Zeolite Prepared by a Mechanochemical Method

Abstract

Zeolites are materials of undeniable importance for science and technology. Since the properties of zeolites can be tuned after the inclusion of additional chemical species into the zeolitic framework, it is necessary to study the nature of zeolites after modification with transition metals to understand the new properties that were obtained, and with this information, novel applications can be proposed. This paper reports a solvent-free approach for the rapid synthesis of zeolites modified with iron and/or iron oxide particles. The samples were characterized, and their electrical and magnetic properties were investigated.

Frequency Response Analysis of FAU, LTA and MFI Zeolites Using UV-Vis and Electrochemical Impedance Spectroscopy

“…This can be observed in the evident similarity of their UV-Vis absorption spectra (Figure 4a). In the case of MFI zeolite, there is a greater Si/Al ratio than in FAU and LTA zeolites [14,15], which is observed in Figure 1 and in the absorbance (Figure 4a). In addition, the data of Figure 4a can be evaluated through CIE lab space [16].…”

“…This can be attributed to the chemical composition of zeolites. This includes the location of Al, Na atoms in the zeolitic matrix [17][18][19], as well as the inclusion of novel chemical species into the crystalline array [14,20].…”