KINETICS OF HETEROGENEOUS SOLID-LIQUID REDOX REACTIONS: THE REACTION BETWEEN MANGANESE DIOXIDE AND HALIDE IONS (AMPEROMETRY, FLOW INJECTION).

Persistent Link:
http://hdl.handle.net/10150/185726
Title:
KINETICS OF HETEROGENEOUS SOLID-LIQUID REDOX REACTIONS: THE REACTION BETWEEN MANGANESE DIOXIDE AND HALIDE IONS (AMPEROMETRY, FLOW INJECTION).
Author:
DYKE, JAMES TINER.
Issue Date:
1983
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
The reaction between various forms of manganese dioxide and halide ions has been investigated. Analytical techniques for the study of this heterogeneous liquid-solid reaction have been developed. The appearance of the reaction products, I₂ and Mn²⁺, was monitored in the aqueous phase of the reaction mixture. I₂ was monitored using amperometry. Mn²⁺ was monitored by a novel application of flow injection analysis. A molecular mechanism was postulated which accounts for the complex pH dependence of the reaction and the inhibition of the reaction under conditions of lower hydrogen ion concentration. The potential of the manganese dioxide-iodide reaction for the metallurgical processing of ferromanganese nodules has been demonstrated. Studies show that there is a preferential dissolution of the manganese portion of the nodules by the action of iodide in acidic conditions. The use of deconvolution techniques for obtaining information from overlapping flow injection analysis peaks has been shown to be feasible. Deconvolution techniques allow an increase in the sampling rates which will broaden the application of flow injection analysis in kinetic studies.
Type:
text; Dissertation-Reproduction (electronic)
Keywords:
Oxidation-reduction reaction.; Manganese dioxide.; Halides.; Iodine ions.
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Chemistry; Graduate College
Degree Grantor:
University of Arizona

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleKINETICS OF HETEROGENEOUS SOLID-LIQUID REDOX REACTIONS: THE REACTION BETWEEN MANGANESE DIOXIDE AND HALIDE IONS (AMPEROMETRY, FLOW INJECTION).en_US
dc.creatorDYKE, JAMES TINER.en_US
dc.contributor.authorDYKE, JAMES TINER.en_US
dc.date.issued1983en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractThe reaction between various forms of manganese dioxide and halide ions has been investigated. Analytical techniques for the study of this heterogeneous liquid-solid reaction have been developed. The appearance of the reaction products, I₂ and Mn²⁺, was monitored in the aqueous phase of the reaction mixture. I₂ was monitored using amperometry. Mn²⁺ was monitored by a novel application of flow injection analysis. A molecular mechanism was postulated which accounts for the complex pH dependence of the reaction and the inhibition of the reaction under conditions of lower hydrogen ion concentration. The potential of the manganese dioxide-iodide reaction for the metallurgical processing of ferromanganese nodules has been demonstrated. Studies show that there is a preferential dissolution of the manganese portion of the nodules by the action of iodide in acidic conditions. The use of deconvolution techniques for obtaining information from overlapping flow injection analysis peaks has been shown to be feasible. Deconvolution techniques allow an increase in the sampling rates which will broaden the application of flow injection analysis in kinetic studies.en_US
dc.typetexten_US
dc.typeDissertation-Reproduction (electronic)en_US
dc.subjectOxidation-reduction reaction.en_US
dc.subjectManganese dioxide.en_US
dc.subjectHalides.en_US
dc.subjectIodine ions.en_US
thesis.degree.namePh.D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineChemistryen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.identifier.proquest8313473en_US
dc.identifier.oclc688486804en_US
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