Kinetics and mechanism of oxidation of hydroxylamine by peroxomonosulphate

Sharma, Madhu; Prasad, D. S. N.; Gupta, K. C.

doi:10.1002/kin.550240706

Cited by 10 publications

(4 citation statements)

References 24 publications

(9 reference statements)

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“…On the other hand, HA can directly react with oxidants such as H 2 O 2 , PMS, ozone (O 3 ), and periodate to generate reactive species . In 1992, the oxidation of HA by PMS was first reported, which focused on the reaction kinetics but the production of SO 4 •– and HO • was not confirmed . Recently, H 2 O 2 was reported to react with HA to generate HO • through one-electron transfer, confirmed by using electron paramagnetic resonance (EPR) analysis and benzoic acid as a HO • probe .…”

Section: Introductionmentioning

confidence: 99%

“…•− and HO • was not confirmed. 17 Recently, H 2 O 2 was reported to react with HA to generate HO • through one-electron transfer, confirmed by using electron paramagnetic resonance (EPR) analysis and benzoic acid as a HO • probe. 18 The reaction mechanisms involve two-steps: H 2 O 2 initially reacts with protonated HA to generate HO • and NH 3 O •+ , and NH 3 O •+ further reacts with H 2 O 2 to generate HO • .…”

Section: Introductionmentioning

confidence: 99%

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Interaction of Persulfate and Hydroxylamine Produces Highly Reactive Species in Aqueous Systems

Chen

Huang

et al. 2023

ACS EST Eng.

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Activation of persulfate is a hot topic in environmental remediation via generating reactive species such as SO 4•− and 1 O 2 . This study investigated the activation of peroxydisulfate (PDS) by HA with respect to the formation mechanisms of reactive species and their roles in contaminant transformation. SO 4•− , HO • , and reactive nitrogen species (RNS, e.g., • NO, • NO 2 , and NH 2 O • ) were proved to be predominant reactive species in the HA/PDS system by electron paramagnetic resonance analysis and radical scavenging tests. The reaction stoichiometric ratio of HA to PDS was about 0.63, involving two major steps: HA initially reacted with PDS to generate SO 4•− and NH 2 O • , and NH 2 O • further reacted with PDS to form SO 4•− and HNO. Ultimately, N 2 O was the major product of HA via the dimerization of HNO. • NO was formed via the reactions of HNO with O 2 and HO • , and • NO 2 could be formed via the reaction of SO 4•− and NO 2 − . In the HA/PDS system, SO 4•− and HO • primarily contributed to the degradation kinetic of carbamazepine, while RNS also played important roles in the transformation pathways of carbamazepine, resulting in the formation of nitroso compounds. As pH increased from 2 to 7, the removal rate of carbamazepine was highest at pH 3−4 (66−69% at 60 min), which is mainly due to NH 2 OH showing higher activation efficiency for PDS but faster consumption for SO 4•− and HO • compared to NH 3 OH + . This study broadens the understanding of peroxide activation by HA and demonstrates the important roles of formed RNS in contaminant transformation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Interaction of Persulfate and Hydroxylamine Produces Highly Reactive Species in Aqueous Systems

Chen

Huang

et al. 2023

ACS EST Eng.

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“…Peroxomonosulfate is a potential oxidant, and a large number of kinetic studies by peroxomonosulfate are reported in acidic and alkaline media [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. The kinetics of oxidation of unsaturated alcohols such as crotyl alcohol (CrA) by sodium bis[-2-ethyl-2hydroxybutanato(2-)] oxochromate(V) [19] has been reported.…”

Section: Introductionmentioning

confidence: 99%

Kinetics and Mechanism of Electron Transfer Reactions: Oxidation of Crotyl Alcohol by Peroxomonosulfate in Aqueous Acidic Medium

Sharma

Sailani

Meena

et al. 2018

Int J of Chemical Kinetics

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The kinetics and mechanism of oxidation of crotyl alcohol by peroxomonosulfate has been studied, and the species of the peroxomonosulfate are discussed to find out the role of activated species. A plausible reaction mechanism is suggested, and a derived rate law corresponds to all experimental observations. The activation parameters such as energy and entropy of activation have been calculated as 37.21 ± 0.5 kJ mol−1 and −148.91 ± 2.7 J K−1 mol−1, respectively, by employing the Eyring plot.

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“…Peroxomonosulfate ion (HSO 5 – ), the anion of Caro’s acid (H 2 SO 5 ), is an inexpensive and environmentally friendly oxidant and has wide applications. − Oxidation studies of peroxomonosulfate (PMS) with several compounds such as hypophosphorous acid, indole-3-acetic acid, oxovanadium(IV) and its aminopolycarboxylate, aromatic aldehydes, alkyl thiocyanates, tris(1,10-phenanthroline)iron(II), hydroxylamine, ascorbic acid, nickel(II) lactate, vanillin, and amino acids, , have been reported.…”

Section: Introductionmentioning

confidence: 99%

Reaction Kinetics and Mechanism of Copper(II) Catalyzed Oxidative Deamination and Decarboxylation of Ornithine by Peroxomonosulfate

Kumar

Raj

Rani

et al. 2012

Ind. Eng. Chem. Res.

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Copper(II) catalyzed and uncatalyzed oxidation of ornithine by peroxomonosulfate (PMS) was studied in acetic acid–sodium acetate buffered medium (pH 3.6–5.2). The catalyzed reaction was 2.6 times faster than the uncatalyzed reaction. The catalytic constant k c obtained in this study was 0.15 mol–1 dm3 s–1. A negative value of entropy of activation obtained in this reaction revealed that the transition state was more rigid than the reactants. ESR spectral data ruled out the participation of free radical intermediate. Cyclic voltammetric and absorption studies confirmed the formation of copper–ornithine–PMS complex. HPLC analysis revealed that the product formed in this reaction was 4-aminobutanal, which was confirmed by NMR spectra.

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Kinetics and mechanism of oxidation of hydroxylamine by peroxomonosulphate

Abstract: The kinetics of the reaction (1) obey the rate law (2) in acetate buffered solutions. A comparison with HZOP and S Z O~' shows the reactivity order to be HPOZ < HS05-> SzO8'-. 0 1992

Cited by 10 publications

References 24 publications

Interaction of Persulfate and Hydroxylamine Produces Highly Reactive Species in Aqueous Systems

Interaction of Persulfate and Hydroxylamine Produces Highly Reactive Species in Aqueous Systems

Kinetics and Mechanism of Electron Transfer Reactions: Oxidation of Crotyl Alcohol by Peroxomonosulfate in Aqueous Acidic Medium

Reaction Kinetics and Mechanism of Copper(II) Catalyzed Oxidative Deamination and Decarboxylation of Ornithine by Peroxomonosulfate

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