Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1016/j.wen.2021.06.001
Lizenz creative commons licence
Titel (primär) Fenton-like oxidation of phenol with in-situ generated hydrogen peroxide and Pd/Fe-zeolite catalysts
Autor Sable, S.S.; Georgi, A.; Contreras, S.; Medina, F.
Quelle Water-Energy Nexus
Erscheinungsjahr 2021
Department TUCHEM
Band/Volume 4
Seite von 95
Seite bis 102
Sprache englisch
Topic T7 Bioeconomy
Keywords Adsorption; Advanced Oxidation Processes (AOPs); Degradation; Fenton-like reaction; Fe-ZSM5 zeolites; Palladium; Phenol
Abstract Two types of iron-containing zeolites with different surface hydrophobicity, Fe-ZSM5 (SiO2/Al2O3 = 26) and Fe-ZSM5 (SiO2/Al2O3 = 236) were studied as adsorbents and catalysts for oxidation of phenol by means of a Fenton-like process at ambient conditions and nearly neutral pH, with and without in-situ generation of H2O2. Adsorption of phenol is more favorable on high silica Fe-ZSM5 (236) zeolite due to its higher surface hydrophobicity. Palladium (Pd) immobilization on Fe-ZSM5 zeolites has a positive impact on phenol degradation with a synergistic role of Pd and Fe (II)/(III) for activation of H2O2. The best result for phenol conversion and mineralization was observed over both hydrophilic and hydrophobic 0.1 wt.% Pd/Fe-ZSM5 with commercial H2O2 achieving ≥ 90% conversion of phenol (100 mg/L) in 4 h and 60–63% mineralization in 6 h with 5 g/L catalyst and 5 g/L H2O2. In addition, Pd/Fe-ZSM5 catalysts can be used for in-situ formation of H2O2 using formic acid as H-source and externally supplied oxygen. The combination of these processes provided by this adsorbent/catalyst material is exploitable for on-site oxidative regeneration of zeolite adsorbents. This study shows that Fe-containing zeolites are promising catalysts for a combined approach of adsorption/oxidative degradation of phenol by commercial or in-situ formed H2O2.
dauerhafte UFZ-Verlinkung
Sable, S.S., Georgi, A., Contreras, S., Medina, F. (2021):
Fenton-like oxidation of phenol with in-situ generated hydrogen peroxide and Pd/Fe-zeolite catalysts
Water-Energy Nexus 4 , 95 - 102 10.1016/j.wen.2021.06.001