ESR ST study of hydroxyl radical generation in wet peroxide system catalyzed by heterogeneous ruthenium

E.V. Rokhina; E.A. Golovina; H. van As; J. Virkutyte

doi:10.1016/j.chemosphere.2009.05.006

ESR ST study of hydroxyl radical generation in wet peroxide system catalyzed by heterogeneous ruthenium

E.V. Rokhina, E.A. Golovina, H. van As, J. Virkutyte

Research output: Contribution to journal › Article › Academic › peer-review

15 Citations (Scopus)

Abstract

Ru-based catalysts gained popularity because of their applicability for a variety of processes, including carbon monoxide oxidation, wet air catalytic oxidation and wastewater treatment. The focus of a current study was generation of hydroxyl radicals in the wet peroxide system catalyzed by heterogeneous ruthenium, spin-trapped by DEPMPO and DIPPMPO by means of electron spin resonance spin-trapping technique (ESR ST). The mechanism of free radicals formation was proposed via direct cleavage of hydrogen peroxide over ruthenium active sites. The chemical reactions occurring in the system were introduced according to the experimental results. Also, radical production rate was assessed based on concentration changes of species involved in the bulk liquid phase oxidation

Original language	English
Pages (from-to)	148-150
Journal	Chemosphere
Volume	77
Issue number	1
DOIs	https://doi.org/10.1016/j.chemosphere.2009.05.006
Publication status	Published - 2009

Keywords

oxidation
decomposition
pollutants
mechanism
kinetics
surface
phenol
water
h2o2

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title = "ESR ST study of hydroxyl radical generation in wet peroxide system catalyzed by heterogeneous ruthenium",

abstract = "Ru-based catalysts gained popularity because of their applicability for a variety of processes, including carbon monoxide oxidation, wet air catalytic oxidation and wastewater treatment. The focus of a current study was generation of hydroxyl radicals in the wet peroxide system catalyzed by heterogeneous ruthenium, spin-trapped by DEPMPO and DIPPMPO by means of electron spin resonance spin-trapping technique (ESR ST). The mechanism of free radicals formation was proposed via direct cleavage of hydrogen peroxide over ruthenium active sites. The chemical reactions occurring in the system were introduced according to the experimental results. Also, radical production rate was assessed based on concentration changes of species involved in the bulk liquid phase oxidation",

keywords = "oxidation, decomposition, pollutants, mechanism, kinetics, surface, phenol, water, h2o2",

author = "E.V. Rokhina and E.A. Golovina and {van As}, H. and J. Virkutyte",

year = "2009",

doi = "10.1016/j.chemosphere.2009.05.006",

language = "English",

volume = "77",

pages = "148--150",

journal = "Chemosphere",

issn = "0045-6535",

publisher = "Elsevier",

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TY - JOUR

T1 - ESR ST study of hydroxyl radical generation in wet peroxide system catalyzed by heterogeneous ruthenium

AU - Rokhina, E.V.

AU - Golovina, E.A.

AU - van As, H.

AU - Virkutyte, J.

PY - 2009

Y1 - 2009

N2 - Ru-based catalysts gained popularity because of their applicability for a variety of processes, including carbon monoxide oxidation, wet air catalytic oxidation and wastewater treatment. The focus of a current study was generation of hydroxyl radicals in the wet peroxide system catalyzed by heterogeneous ruthenium, spin-trapped by DEPMPO and DIPPMPO by means of electron spin resonance spin-trapping technique (ESR ST). The mechanism of free radicals formation was proposed via direct cleavage of hydrogen peroxide over ruthenium active sites. The chemical reactions occurring in the system were introduced according to the experimental results. Also, radical production rate was assessed based on concentration changes of species involved in the bulk liquid phase oxidation

AB - Ru-based catalysts gained popularity because of their applicability for a variety of processes, including carbon monoxide oxidation, wet air catalytic oxidation and wastewater treatment. The focus of a current study was generation of hydroxyl radicals in the wet peroxide system catalyzed by heterogeneous ruthenium, spin-trapped by DEPMPO and DIPPMPO by means of electron spin resonance spin-trapping technique (ESR ST). The mechanism of free radicals formation was proposed via direct cleavage of hydrogen peroxide over ruthenium active sites. The chemical reactions occurring in the system were introduced according to the experimental results. Also, radical production rate was assessed based on concentration changes of species involved in the bulk liquid phase oxidation

KW - oxidation

KW - decomposition

KW - pollutants

KW - mechanism

KW - kinetics

KW - surface

KW - phenol

KW - water

KW - h2o2

U2 - 10.1016/j.chemosphere.2009.05.006

DO - 10.1016/j.chemosphere.2009.05.006

M3 - Article

VL - 77

SP - 148

EP - 150

JO - Chemosphere

JF - Chemosphere

SN - 0045-6535

IS - 1

ER -