Oxidative degradation of nitrobenzene by a Fenton-like reaction with Fe-Cu bimetallic catalysts

Sun, Yang; Yang, Zixu; Tian, Pengfei; Sheng, Yiyi; Xu, Jing; Han, Yi‐Fan

doi:10.1016/j.apcatb.2018.11.009

Cited by 239 publications

(47 citation statements)

References 54 publications

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“…The batch stirred tank reactor setup used in the experiment was as the previous studies, 13,39,40 and also described in the Appendix S1.…”

Section: Methodsmentioning

confidence: 99%

“…Our group has achieved deep insights into active sites of Cu, Cu‐Fe, or Cu‐Co bimetallic catalysts for the degradation of dyes and nitrogen‐containing organic compounds in batch reactors 13,39‐41 . In order to develop a cost‐effective industrial CWPO process, the degradation of organics and H 2 O 2 decomposition in the FBR should be studied, and related transport‐kinetics behavior should also be considered for evaluating the process.…”

Section: Introductionmentioning

confidence: 99%

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Degradation of MO and H₂O₂ on Cu/γ‐Al₂O₃ pellets in a fixed bed reactor: Kinetics and transport characteristics

et al. 2020

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Pelletized Cu catalysts (Cu/γ-Al 2 O 3) with different diameters (d p = 1.1-4.2 mm) were prepared and examined kinetically for methyl orange (MO) degradation using a fixed bed reactor. A Cu/γ-Al 2 O 3 catalyst (d p = 2.3 mm) exhibited high degradation activity (Conv. MO > 95%) and superior leaching resistance (Cu leaching <0.6 mg/L in 200 hr). Apparent kinetics showed that both MO degradation and H 2 O 2 decomposition were mainly controlled by internal mass transfer. A plug-flow reactor model with masstransfer coefficients was developed, and a modified empirical correlation for external mass transfer (Sh = 1.5Re' 1.10 Sc 0.42) was proposed to accurately describe the species transport from/to the catalyst pellets in the low Reynolds number regime. The model was verified against conversions of pollutants degradation and H 2 O 2 decomposition separately in a fixed bed with relative errors <5% compared with experimental data; thus, it could be used as an effective tool for further design and optimization of reactor configuration and reaction conditions for the continuous catalytic wet peroxide oxidation process.

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“…The batch stirred tank reactor setup used in the experiment was as the previous studies, 13,39,40 and also described in the Appendix S1.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Degradation of MO and H₂O₂ on Cu/γ‐Al₂O₃ pellets in a fixed bed reactor: Kinetics and transport characteristics

et al. 2020

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“…Although these intense conditions live for a short interval, the degradation of organic pollutants is achieved either by pyrolytic cleavage or the generation of hydroxyl radicals. Under these vigorous conditions, highly reactive species such as hydroxyl ( ∙ OH) and hydrogen (H ∙ ) radicals are formed as described in Equations (12)–(15) [25,26,27,76,77]. This sono-chemical oxidation process creates an oxidative environment by the implementation of ultrasonic waves in the aqueous phase.…”

Section: Fenton Reactionmentioning

confidence: 99%

“…Among new alternative technologies for wastewater treatment, one effective technique is advanced oxidation processes (AOPs), which can be used to convert toxic and resistant chemicals into environmentally benign minerals. The highly efficient degradation of wastewater compounds is achievable by adopting a direct oxidation approach, but the requirement of severe operation conditions (e.g., high temperature and pressure) for the degradation of selected compounds increases the overall process cost [23,24,25,26,27]. Catalytic oxidation is one of the most efficient AOPs, based on the active radicals produced during the reaction in the presence of a catalyst at relatively mild reaction conditions.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Oxidation Process for the Degradation of Synthetic Dyes: An Overview

Javaid

Qazi

2019

IJERPH

288

101

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Dyes are used in various industries as coloring agents. The discharge of dyes, specifically synthetic dyes, in wastewater represents a serious environmental problem and causes public health concerns. The implementation of regulations for wastewater discharge has forced research towards either the development of new processes or the improvement of available techniques to attain efficient degradation of dyes. Catalytic oxidation is one of the advanced oxidation processes (AOPs), based on the active radicals produced during the reaction in the presence of a catalyst. This paper reviews the problems of dyes and hydroxyl radical-based oxidation processes, including Fenton’s process, non-iron metal catalysts, and the application of thin metal catalyst-coated tubular reactors in detail. In addition, the sulfate radical-based catalytic oxidation technique has also been described. This study also includes the effects of various operating parameters such as pH, temperature, the concentration of the oxidant, the initial concentration of dyes, and reaction time on the catalytic decomposition of dyes. Moreover, this paper analyzes the recent studies on catalytic oxidation processes. From the present study, it can be concluded that catalytic oxidation processes are very active and environmentally friendly methods for dye removal.

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“…The cooperative stimulus of the polymetallic unlocked different view to the field of catalysis when a unique constituent is adequately investigated. Bimetallic catalysts revealed outstanding performance than the monometallic catalysts for their catalytic performance, stability, and selectivity [30]. The research on Ullmann reaction is a persistent process and has adapted interested reaction today.…”

Section: The Mono-element Of Cu Nanoparticlementioning

confidence: 99%

Recent Advancement of Ullmann Condensation Coupling Reaction in the Formation of Aryl-Oxygen (C-O) Bonding by Copper-Mediated Catalyst

et al. 2020

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Transition metal-catalyzed chemical transformation of organic electrophiles and organometallic reagents belong to the most important cross coupling reaction in organic synthesis. The biaryl ether division is not only popular in natural products and synthetic pharmaceuticals but also widely found in many pesticides, polymers, and ligands. Copper catalyst has received great attention owing to the low toxicity and low cost. However, traditional Ullmann-type couplings suffer from limited substrate scopes and harsh reaction conditions. The introduction of homogeneous copper catalyst with presence of bidentate ligands over the past two decades has totally changed this situation as these ligands enable the reaction promoted in mild condition. The reaction scope has also been greatly expanded, rendering this copper-based cross-coupling attractive for both academia and industry. In this review, we will highlight the latest progress in the development of useful homogeneous copper catalyst with presence of ligand and heterogeneous copper catalyst in Ullmann type C-O cross-coupling reaction. Additionally, the application of Ullmann type C-O cross coupling reaction will be discussed.

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Oxidative degradation of nitrobenzene by a Fenton-like reaction with Fe-Cu bimetallic catalysts

Cited by 239 publications

References 54 publications

Degradation of MO and H₂O₂ on Cu/γ‐Al₂O₃ pellets in a fixed bed reactor: Kinetics and transport characteristics

Degradation of MO and H₂O₂ on Cu/γ‐Al₂O₃ pellets in a fixed bed reactor: Kinetics and transport characteristics

Catalytic Oxidation Process for the Degradation of Synthetic Dyes: An Overview

Recent Advancement of Ullmann Condensation Coupling Reaction in the Formation of Aryl-Oxygen (C-O) Bonding by Copper-Mediated Catalyst

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Oxidative degradation of nitrobenzene by a Fenton-like reaction with Fe-Cu bimetallic catalysts

Cited by 239 publications

References 54 publications

Degradation of MO and H2O2 on Cu/γ‐Al2O3 pellets in a fixed bed reactor: Kinetics and transport characteristics

Degradation of MO and H2O2 on Cu/γ‐Al2O3 pellets in a fixed bed reactor: Kinetics and transport characteristics

Catalytic Oxidation Process for the Degradation of Synthetic Dyes: An Overview

Recent Advancement of Ullmann Condensation Coupling Reaction in the Formation of Aryl-Oxygen (C-O) Bonding by Copper-Mediated Catalyst

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Degradation of MO and H₂O₂ on Cu/γ‐Al₂O₃ pellets in a fixed bed reactor: Kinetics and transport characteristics

Degradation of MO and H₂O₂ on Cu/γ‐Al₂O₃ pellets in a fixed bed reactor: Kinetics and transport characteristics