Recent advances in copper-catalyzed oxidation of organic compounds

Punniyamurthy, Tharmalingam; Rout, Laxmidhar

doi:10.1016/j.ccr.2007.04.003

Cited by 325 publications

(147 citation statements)

References 193 publications

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“…In turn, copper has a similar role as iron in catalysing hydrogen peroxide to produce hydroxyl radical, with the advantage that this reaction still retains a high efficiency at a higher pH range [8][9][10]. However, Catalytic wet peroxide oxidation of reactive dyes could be successfully carried out with Cu-based catalysts.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterisation A Catalytic System Cu-Clay for Catalytic Oxidation of Methyl Orange with H2O2

Idrissi¹,

Miyah²,

Lahrichi³

et al. 2014

IJIRSET

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ABSTRACT:In this work, the decolorization of Methyl Orange was conducted using catalysts prepared by impregnation of copper on natural clay in the presence of H 2 O 2 . The catalysts Cu-clay, prepared from the concentrated metal precursor of (impregnation ratio, W(Cu(NO 3 ) 2 )/W(clay) = 1,5%-7,5%) were characterized by several methods such as X-ray diffraction (XRD), electronic scan microscopy (SEM), x-ray fluorescence (FX), and Brunauer-EmmettTeller (BET). Important factors affecting catalyst activity and methyl orange removal efficiencies were studied: the effects of temperature, oxidant concentration, and catalyst dosage. The results showed, a very significant activation of hydrogen peroxide by the catalyst, the Methyl Orange depletion percentage reaching 94 % after 2 h, and very stability of the catalyst. It was also observed that the best catalyst, at a reaction temperature of 25°C. 2,5ml of H 2 O 2 and 4.0 g/L of 5% Cu-clay, 94% decolorization was achieved within 120 min treatment. Although the Cu show high activity, their stability and reusability still need improvement.

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Section: Introductionmentioning

confidence: 99%

Preparation and Characterisation A Catalytic System Cu-Clay for Catalytic Oxidation of Methyl Orange with H2O2

Idrissi¹,

Miyah²,

Lahrichi³

et al. 2014

IJIRSET

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“…form or complex form with organic ligands (Sahi et al 2007). In green plant organs, copper is present in chloroplasts and it is a component of many enzymes which catalyze oxidation reactions with the use of O 2 (Borghi et al 2008;Punniyamurthy and Rout 2008). Dynamics of copper phytoextraction are usually lower than for other trace elements.…”

Section: Introductionmentioning

confidence: 99%

Copper phytoextraction with willow (Salix viminalis L.) under various Ca/Mg ratios. Part 1. Copper accumulation and plant morphology changes

et al. 2013

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This work reports a part of hydroponic experiment results concerning changes in Salix viminalis L. cv. 'Cannabina' morphology and physiology under stress conditions with different copper concentration levels and verifies our earlier results about the role of different Ca/Mg ratios in trace elements' accumulation efficiency. In this part, we present the copper accumulation and changes in willow biomass. Concentration of copper in roots, rods, shoots and leaves was analyzed with flame atomic absorption spectrometry. Selected indices characterizing copper accumulation and plant biomass structure were calculated to estimate the potential of willow to remove metal from polluted solution. Our results indicate a general increase of copper accumulation by selected willow organs with increase of copper concentration in modified Knop's medium. Moreover, significant differences in copper phytoextraction between plants under different Ca/Mg ratios were affirmed (1:10 [ 4:1 [ 20:1 [ 1: 1 / 4 ).

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“…The enantiomeric excess (ee) of 87% was achieved by metal-based oxidation of 4-MeO-PhSMe [9]. With relevance to the given work, dioxygen activation during the oxidation of thioanisoles, alcohols, or even alkanes is also commonly catalysed by both copper(II) or copper(I) complexes [10,11].…”

Section: Recently the Synthesis Of Nn-bis(2-pyridylmethyl)-12-di(2mentioning

confidence: 99%

Non-innocent ground state electronic structure of a polynuclear copper complex with picolinate bridges

Csonka

Lakk-Bogáth

Gömöry

et al. 2018

Inorganica Chimica Acta

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Recent advances in copper-catalyzed oxidation of organic compounds

Cited by 325 publications

References 193 publications

Preparation and Characterisation A Catalytic System Cu-Clay for Catalytic Oxidation of Methyl Orange with H2O2

Preparation and Characterisation A Catalytic System Cu-Clay for Catalytic Oxidation of Methyl Orange with H2O2

Copper phytoextraction with willow (Salix viminalis L.) under various Ca/Mg ratios. Part 1. Copper accumulation and plant morphology changes

Non-innocent ground state electronic structure of a polynuclear copper complex with picolinate bridges

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