Influence of glass basicity on redox interactions of iron-manganese-copper ion pairs in soda-lime-silica glass

The redox interactions of iron, manganese, and copper ion pairs including absorption characteristics in a multicomponent soda-lime-silica glass, were investigated. Glasses containing 11-19 mol % Na2O were melted under an air atmosphere in an electric furnace at 1450°C for 8 h. The results of chemica...

Full description

Saved in:
Bibliographic Details
Main Authors: Thiemsorn W., Keowkamnerd K., Phanichphant S., Suwannathada P., Hessenkemper H.
Format: Article
Language:English
Published: 2014
Online Access:http://www.scopus.com/inward/record.url?eid=2-s2.0-40749119785&partnerID=40&md5=361edb3c56694b9f4eed242da6271b66
http://cmuir.cmu.ac.th/handle/6653943832/5622
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Chiang Mai University
Language: English
id th-cmuir.6653943832-5622
record_format dspace
spelling th-cmuir.6653943832-56222014-08-30T02:56:44Z Influence of glass basicity on redox interactions of iron-manganese-copper ion pairs in soda-lime-silica glass Thiemsorn W. Keowkamnerd K. Phanichphant S. Suwannathada P. Hessenkemper H. The redox interactions of iron, manganese, and copper ion pairs including absorption characteristics in a multicomponent soda-lime-silica glass, were investigated. Glasses containing 11-19 mol % Na2O were melted under an air atmosphere in an electric furnace at 1450°C for 8 h. The results of chemical analysis indicated that the redox pairs of Fe2+/Fe 3+, Mn2+/Mn3+, and Cu+/Cu 2+ shift to more oxidized states as a function of increasing glass basicity. The redox interactions of individual pairs, e.g., Fe 2+/Fe3+-Mn2+/Mn3+, Fe 2+/Fe3+-Cu+/Cu2+, and Mn 2+/Mn3+-Cu+/Cu2+, were not strong but changed with glass basicity. For the three redox pairs, Fe 2+/Fe3+-Mn2+/Mn3+-Cu +/Cu2+, both Mn3+ and Cu2+ ions simultaneously and proportionally oxidized Fe2+ to Fe3+ and did not affect one another. The reaction constants log Q 2 of Fe2+/Fe3+-Mn2+/Mn3+ and Mn 2+/Mn3+-Cu+/Cu2+ redox pairs decreased while the Fe2+/Fe3+-Cu+/Cu 2+ and three redox pairs systems changed markedly with increasing the glass basicity. The oxidizing and reducing powers of each ion changed only slightly in the present of one another, and the absorption spectra of all the single polyvalent elements confirmed to the Lambert-Beer law. The spectra depended directly on the concentrations of each absorbing ion. While the spectra of glass doped with more than one element confirmed the direction of the equilibrium shift, they were used only to predict the degree of interaction. These investigations gave consistent results. © 2008 MAIK Nauka. 2014-08-30T02:56:44Z 2014-08-30T02:56:44Z 2008 Article 10876596 10.1007/s10720-008-1003-9 http://www.scopus.com/inward/record.url?eid=2-s2.0-40749119785&partnerID=40&md5=361edb3c56694b9f4eed242da6271b66 http://cmuir.cmu.ac.th/handle/6653943832/5622 English
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
language English
description The redox interactions of iron, manganese, and copper ion pairs including absorption characteristics in a multicomponent soda-lime-silica glass, were investigated. Glasses containing 11-19 mol % Na2O were melted under an air atmosphere in an electric furnace at 1450°C for 8 h. The results of chemical analysis indicated that the redox pairs of Fe2+/Fe 3+, Mn2+/Mn3+, and Cu+/Cu 2+ shift to more oxidized states as a function of increasing glass basicity. The redox interactions of individual pairs, e.g., Fe 2+/Fe3+-Mn2+/Mn3+, Fe 2+/Fe3+-Cu+/Cu2+, and Mn 2+/Mn3+-Cu+/Cu2+, were not strong but changed with glass basicity. For the three redox pairs, Fe 2+/Fe3+-Mn2+/Mn3+-Cu +/Cu2+, both Mn3+ and Cu2+ ions simultaneously and proportionally oxidized Fe2+ to Fe3+ and did not affect one another. The reaction constants log Q 2 of Fe2+/Fe3+-Mn2+/Mn3+ and Mn 2+/Mn3+-Cu+/Cu2+ redox pairs decreased while the Fe2+/Fe3+-Cu+/Cu 2+ and three redox pairs systems changed markedly with increasing the glass basicity. The oxidizing and reducing powers of each ion changed only slightly in the present of one another, and the absorption spectra of all the single polyvalent elements confirmed to the Lambert-Beer law. The spectra depended directly on the concentrations of each absorbing ion. While the spectra of glass doped with more than one element confirmed the direction of the equilibrium shift, they were used only to predict the degree of interaction. These investigations gave consistent results. © 2008 MAIK Nauka.
format Article
author Thiemsorn W.
Keowkamnerd K.
Phanichphant S.
Suwannathada P.
Hessenkemper H.
spellingShingle Thiemsorn W.
Keowkamnerd K.
Phanichphant S.
Suwannathada P.
Hessenkemper H.
Influence of glass basicity on redox interactions of iron-manganese-copper ion pairs in soda-lime-silica glass
author_facet Thiemsorn W.
Keowkamnerd K.
Phanichphant S.
Suwannathada P.
Hessenkemper H.
author_sort Thiemsorn W.
title Influence of glass basicity on redox interactions of iron-manganese-copper ion pairs in soda-lime-silica glass
title_short Influence of glass basicity on redox interactions of iron-manganese-copper ion pairs in soda-lime-silica glass
title_full Influence of glass basicity on redox interactions of iron-manganese-copper ion pairs in soda-lime-silica glass
title_fullStr Influence of glass basicity on redox interactions of iron-manganese-copper ion pairs in soda-lime-silica glass
title_full_unstemmed Influence of glass basicity on redox interactions of iron-manganese-copper ion pairs in soda-lime-silica glass
title_sort influence of glass basicity on redox interactions of iron-manganese-copper ion pairs in soda-lime-silica glass
publishDate 2014
url http://www.scopus.com/inward/record.url?eid=2-s2.0-40749119785&partnerID=40&md5=361edb3c56694b9f4eed242da6271b66
http://cmuir.cmu.ac.th/handle/6653943832/5622
_version_ 1681420460340805632