A kinetic analysis of the interaction of human myeloperoxidase with hydrogen peroxide, chloride ions, and protons.

The catalytic and physico-chemical properties of low-temperature nickel-silver catalysts with nickel oxide concentrations up to 43.8% (m/m) are examined via decomposition of hydrogen peroxide in aqueous solution. The mixed catalysts prepared at 250°C are composed of partly decomposed silver carbonate or oxide and nickel carbonate or hydroxide decomposed to a low degree only and exhibiting a very defective crystal structure. The activity of these catalysts is determined by the surface concentration of silver ions, which is affected by the nickel component present. The latter also contributes to the thermal stability of the catalytic centres of the silver component, viz. the Ag+ ions. The concentration of these ions varies with the temperature of the catalyst treatment, the activity varies qualitatively in the same manner, and the system approaches the Ag-NiO composition. The catalytic centres are very susceptible to poisoning by chloride ions. A previous exposition of the catalyst to a gamma dose of 10 kGy from a 60Co source has no measurable effect on the physico-chemical properties of the system.

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Hydrogen peroxide decomposition into oxygen in different soils: kinetic analysis, mechanism and implication in catalyzed hydrogen peroxide propagations

Journal of Cleaner Production ◽

10.1016/j.jclepro.2021.127116 ◽

2021 ◽

pp. 127116

Author(s):

Hamed Vafaei Molamahmood ◽

Jiaolong Qin ◽

Shiqin Yu ◽

Mingce Long

Keyword(s):

Hydrogen Peroxide ◽

Kinetic Analysis ◽

Hydrogen Peroxide Decomposition ◽

Peroxide Decomposition ◽

Different Soils

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ChemInform Abstract: STUDIES OF THE CHEMILUMINESCENCE OF SEVERAL XANTHENE DYES PART 6, A KINETIC ANALYSIS OF A BLUE-FLUORESCENT PRODUCT IN THE CHEMILUMINESCENT REACTION OF EOSIN Y WITH HYDROGEN PEROXIDE

Chemischer Informationsdienst ◽

10.1002/chin.197443121 ◽

1974 ◽

Vol 5 (43) ◽

Author(s):

ISAO KAMIYA ◽

KEIZO AOKI

Keyword(s):

Hydrogen Peroxide ◽

Kinetic Analysis ◽

Eosin Y ◽

Fluorescent Product ◽

Xanthene Dyes ◽

Chemiluminescent Reaction

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Catalytic Degradation of Orange II by MnIII(TPPS) in Basic Hydrogen Peroxide Medium: A Detailed Kinetic Analysis

European Journal of Inorganic Chemistry ◽

10.1002/ejic.201800485 ◽

2018 ◽

Vol 2018 (30) ◽

pp. 3462-3471 ◽

Cited By ~ 6

Author(s):

Magdalena Procner ◽

Łukasz Orzeł ◽

Grażyna Stochel ◽

Rudi van Eldik

Keyword(s):

Hydrogen Peroxide ◽

Kinetic Analysis ◽

Catalytic Degradation ◽

Orange Ii ◽

Basic Hydrogen Peroxide

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Critical Evaluation of Rate Constants and Equilibrium Constants of Hydrogen Peroxide Photolysis in Acidic Aqueous Solutions Containing Chloride Ions

Journal of Physical and Chemical Reference Data ◽

10.1063/1.1695414 ◽

2004 ◽

Vol 33 (3) ◽

pp. 747-763 ◽

Cited By ~ 61

Author(s):

Xiao-Ying Yu

Keyword(s):

Hydrogen Peroxide ◽

Aqueous Solutions ◽

Rate Constants ◽

Equilibrium Constants ◽

Critical Evaluation ◽

Chloride Ions

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Myeloperoxidase Exerts Microbicidal Activity against Mycobacterium tuberculosis

Infection and Immunity ◽

10.1128/iai.67.8.4149-4152.1999 ◽

1999 ◽

Vol 67 (8) ◽

pp. 4149-4152 ◽

Cited By ~ 21

Author(s):

Violetta Borelli ◽

Elena Banfi ◽

Maria Giovanna Perrotta ◽

Giuliano Zabucchi

Keyword(s):

Hydrogen Peroxide ◽

Mycobacterium Tuberculosis ◽

Clinical Isolate ◽

Chloride Ions ◽

Human Neutrophils ◽

Microbicidal Activity ◽

Assay Medium ◽

Killing Activity ◽

Dose Dependent

ABSTRACT We investigated the antimycobacterial role of myeloperoxidase (MPO), one of the most abundant granule proteins in human neutrophils. Our data indicate that purified MPO, in the presence of hydrogen peroxide, exerts a consistent killing activity againstMycobacterium tuberculosis H37Rv and against a clinical isolate. The activity is time and dose dependent and requires the presence of chloride ions in the assay medium.

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