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Novel heterogeneous catalysts in the wet peroxide oxidation of phenol.
Water Sci Technol. 2001; 44(5):153-60.WS

Abstract

Catalytic wet peroxide oxidation (CWPO) of diluted aqueous solutions of phenol has been studied over a series of heterogeneous catalysts at 100 degrees C under 1 MPa air pressure. Several catalysts were prepared and tested including zeolitic materials exchanged with metallic ions such as Fe and Cu and different mixed oxides. Likewise, a Fe-TS-1 zeolite was synthesised by isomorphous substitution of Si atoms by Fe and Ti into the MFI zeolitic framework through hydrothermal synthesis of wetness-impregnated Fe2O3-TiO2-SiO2 xerogels. This material showed a complete phenol removal and TOC reduction of up to 68% under the reaction conditions, with a low leaching of iron species as compared to Fe-exchanged zeolitic materials. Perovskite of type LaTi(0.45)Cu(0.55)O3 was also tested, showing copper leaching of 22%, with a TOC conversion of 93% and total phenol removal. The capacity of Fe and Cu containing catalysts to promote free radicals in the presence of H2O2 as well as the thermal decomposition of the oxidant under the reaction conditions have also been studied. In the absence of hydrogen peroxide, Fe and Cu catalysts were not effective in order to decrease TOC content.

Authors+Show Affiliations

Chemical Engineering Department, Faculty of Chemistry, Complutense University, Madrid, Spain.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

11695454

Citation

Ovejero, G, et al. "Novel Heterogeneous Catalysts in the Wet Peroxide Oxidation of Phenol." Water Science and Technology : a Journal of the International Association On Water Pollution Research, vol. 44, no. 5, 2001, pp. 153-60.
Ovejero G, Sotelo JL, Martinez F, et al. Novel heterogeneous catalysts in the wet peroxide oxidation of phenol. Water Sci Technol. 2001;44(5):153-60.
Ovejero, G., Sotelo, J. L., Martinez, F., & Gordo, L. (2001). Novel heterogeneous catalysts in the wet peroxide oxidation of phenol. Water Science and Technology : a Journal of the International Association On Water Pollution Research, 44(5), 153-60.
Ovejero G, et al. Novel Heterogeneous Catalysts in the Wet Peroxide Oxidation of Phenol. Water Sci Technol. 2001;44(5):153-60. PubMed PMID: 11695454.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Novel heterogeneous catalysts in the wet peroxide oxidation of phenol. AU - Ovejero,G, AU - Sotelo,J L, AU - Martinez,F, AU - Gordo,L, PY - 2001/11/7/pubmed PY - 2002/3/7/medline PY - 2001/11/7/entrez SP - 153 EP - 60 JF - Water science and technology : a journal of the International Association on Water Pollution Research JO - Water Sci Technol VL - 44 IS - 5 N2 - Catalytic wet peroxide oxidation (CWPO) of diluted aqueous solutions of phenol has been studied over a series of heterogeneous catalysts at 100 degrees C under 1 MPa air pressure. Several catalysts were prepared and tested including zeolitic materials exchanged with metallic ions such as Fe and Cu and different mixed oxides. Likewise, a Fe-TS-1 zeolite was synthesised by isomorphous substitution of Si atoms by Fe and Ti into the MFI zeolitic framework through hydrothermal synthesis of wetness-impregnated Fe2O3-TiO2-SiO2 xerogels. This material showed a complete phenol removal and TOC reduction of up to 68% under the reaction conditions, with a low leaching of iron species as compared to Fe-exchanged zeolitic materials. Perovskite of type LaTi(0.45)Cu(0.55)O3 was also tested, showing copper leaching of 22%, with a TOC conversion of 93% and total phenol removal. The capacity of Fe and Cu containing catalysts to promote free radicals in the presence of H2O2 as well as the thermal decomposition of the oxidant under the reaction conditions have also been studied. In the absence of hydrogen peroxide, Fe and Cu catalysts were not effective in order to decrease TOC content. SN - 0273-1223 UR - https://www.unboundmedicine.com/medline/citation/11695454/Novel_heterogeneous_catalysts_in_the_wet_peroxide_oxidation_of_phenol_ DB - PRIME DP - Unbound Medicine ER -