Journal ArticleDOI
Cu-containing MFI zeolites as catalysts for wet peroxide oxidation of formic acid as model organic contaminant
Oxana P. Taran,Oxana P. Taran,Svetlana A. Yashnik,Artemiy B. Ayusheev,Anna S. Piskun,R. V. Prihod’ko,Zinfer R. Ismagilov,Vladislav V. Goncharuk,Valentin N. Parmon,Valentin N. Parmon +9 more
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In this paper, the performance of different Cu(Fe)/zeolite catalysts with the MFI morphology in wet peroxide oxidation of formic acid as a model organic substrate was thoroughly examined.Abstract:
The catalytic behavior of different Cu(Fe)/zeolite catalysts with the MFI morphology in wet peroxide oxidation of formic acid as a model organic substrate was thoroughly examined. The influence of the method for Cu2+ ions introduction into the zeolite matrix, Cu loading and the electron state of Cu on catalytic properties of zeolites, including their stability to leaching of Cu was studied. Cu-substituted ZSM-5 zeolites with the atomic ratio Si/Al = 30 and Cu content of 0.5–1.5, which were prepared by ion exchange, were shown most promising for wet peroxide oxidation. The impact of temperature, initial pH and concentrations of reagents on the catalytic performance of the catalyst with the optimal composition also was studied. The characterization of fresh and spent catalysts using UV–vis DR and ESR spectroscopic techniques led to suppose that the high efficiency of Cu-ZSM-5 to redox reactions in aqueous media is provided by nanostructured square-planar copper oxide clusters localized in the zeolite channels.read more
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Enhanced Fenton-like degradation of pharmaceuticals over framework copper species in copper-doped mesoporous silica microspheres
Lai Lyu,Lili Zhang,Chun Hu +2 more
TL;DR: In this paper, an interaction process among the framework Cu of mesoporous silica microspheres, pharmaceuticals and H2O2 was proposed: during the Fenton-like reaction, the framework of Cu(I) in Cu-MSMs primarily converted H 2O2 into (OH)-O-center dot, and then it was oxidized to Cu(II) by H 2 O 2.
Journal ArticleDOI
Perovskite-like catalysts LaBO3 (B = Cu, Fe, Mn, Co, Ni) for wet peroxide oxidation of phenol
Oxana P. Taran,Oxana P. Taran,Artemiy B. Ayusheev,Olga L. Ogorodnikova,Igor P. Prosvirin,Igor P. Prosvirin,Lyubov A. Isupova,Valentin N. Parmon,Valentin N. Parmon +8 more
TL;DR: In this article, the catalytic behavior of perovskite-like oxides LaBO3 (B = Cu, Fe, Co, Ni, Mn) prepared by the Pecini method were examined in wet peroxide oxidation of phenol as a model organic substrate.
Journal ArticleDOI
Cu-impregnated zeolite Y as highly active and stable heterogeneous Fenton-like catalyst for degradation of Congo red dye
TL;DR: In this paper, the effects of major parameters, such as copper loading, initial pH, H 2 O 2 concentration, catalyst dose and temperature were studied on the activity as well as copper leaching from catalyst.
Journal ArticleDOI
Framework Cu-doped AlPO4 as an effective Fenton-like catalyst for bisphenol A degradation
TL;DR: In this paper, a Cu-doped AlPO4 molecular sieve was used for the degradation of bisphenol A (BPA) in the presence of H2O2 at room temperature and neutral pH conditions.
References
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Heterogeneous water phase catalysis as an environmental application: a review.
Kari Pirkanniemi,Mika Sillanpää +1 more
TL;DR: This review of 120 references presents the wide scale of heterogeneous water phase applications studied mainly within past five years, both oxidation and hydrogenation processes are included as well as TiO2 assisted photocatalysis.
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Rapid decolorization of azo dye methyl orange in aqueous solution by nanoscale zerovalent iron particles
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Catalytic wet oxidation with H2O2 of carboxylic acids on homogeneous and heterogeneous Fenton-type catalysts
TL;DR: In this article, the behavior of a heterogeneous Fe3+-containing zeolite (Fe/ZSM5) was compared with the behaviour of homogeneous Fe 3+ catalysts at the same experimental conditions.
Journal ArticleDOI
Iron compounds and the mechanisms of the homogeneous catalysis of the activation of O2and H2O2and of the oxidation of organic substrates
Aleksei Ya Sychev,V. G. Isak +1 more
TL;DR: In this paper, a series of catalytic systems simulating the functional activity of certain enzymes are considered at a model level, and a bibliography includes 338 references including 338 references from the literature.