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KINETIC ASPECTS OF REDOX EQUILIBRIUM IN GLASS USED FOR ENVIROMMENT PROTECTION


CĂPĂŢÎNA CAMELIA, CÎRTÎNA DANIELA
UNIVERSITY CONSTANTIN BRANCUSI OF TG-JIU

Issue:

MOCM, Number 7, Volume I

Section:

Issue No. 7 - Volume I (2001)

Abstract:

It is known that copper oxide introduced in glass batches produced red colour when melted under reducing conditions. However, the production of bright and uniform red colour has been reported to be one of the most difficult of all coloured glasses. The entire problem was investigated and after a detailed study extending over several years, the technique, conditions and batch compositions suitable for producing uniform and bright red colour were developed. A method was established for evidencing the evolution in time of the oxidized/reduced ratio for ions in given melting conditions. In this aim were recorded the electronic spectra, the peak corresponding to the d-d electron transmition being used for Cu + ion concentration estimation. The obtained results are discussed in comparison with existing data. The problem of the glass basicity influence upon the redox equilibrium is approached too.

Keywords:

redox, copper, glass.

Code [ID]:

MOCM200107V01S01A0005 [0001142]


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