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States of Sulfur in Alkali Borate Glasses
Author(s) -
AHMED A. A.,
ElSHAMY T. M.,
SHARAF N. A.
Publication year - 1980
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1980.tb10760.x
Subject(s) - alkali metal , sulfur , boron , polysulfide , inorganic chemistry , chemistry , absorption spectroscopy , boron oxide , analytical chemistry (journal) , mineralogy , materials science , organic chemistry , electrolyte , physics , electrode , quantum mechanics
Simple binary alkali borate glasses of differing alkali content (alkali = Li, Na, or K) containing sulfur were prepared and their absorption spectra were measured in the range of 200 to 700 nm. The absorption bands obtained were used to determine the stable states of sulfur in these glasses by directly comparing them with published data. The following states of sulfur were identified and their ranges of stability were determined: the S 2 molecule in glasses containing at least 15 mol% alkali oxide, the S 3 − and S 2 − in glasses containing 20 to 30 mol% Na 2 O or K 2 O, and the polysulfide ion (S x 2− ) in glasses of 30 to 35 mol% Na 2 O or K 2 O.