The Oxidation State of Sulfur on the Air Side Surface of Soda-Lime Float Glass as Determined by X-Ray Absorption near Edge Structure Spectra

Abstract:

Three ways were used to prepare sulfide in soda-lime-silicate glass samples, i.e., glass heat-treated in N₂/H₂ (90/10 volume ratio), doped with different Carbon/Sulfur in mol ratio, as well as different sulfur source respectively. The oxidation state of sulfur on the air side surface of float glass heat-treated in N₂/H₂ and the bulk samples of the other two were determined by X-ray absorption near edge structure spectra (XANES). It was observed on the air side that: 1) A weak pre-edge exhibits at 2466.8eV which appears only with sulfite at high temperature and related to sulfur source; 2) A typical peak of sulfate at 2482.4eV decreases with increasing the temperature and heating duration. 3) Two peaks associated with sulfide, a broader one at about 2476.3eV and a sharper one with an accurate position at 2473.7eV. The S^2- content at air side of glass heat-treated at 750 is higher than that of the glass treated at other temperatures, and increases with the heating duration, which is just the reverse at 1050, because the S^2- volatilizes to the atmosphere easily at higher temperature. In addition, the content of S^2- increases with increasing C/S ratio. The local environment of S^2- in the glass with Na₂S is different from that of with FeS, as indicated by the broader resonance. The spectra indicate that the glass heat-treated in N₂/H₂ (90/10), doped with different C/S ratio and with Na₂S have the same sulfites or sulfites.

• Periodical: Materials Science Forum (Volumes 743-744)
• Pages: 316-322
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.743-744.316
• Online since: January 2013
• Authors: Zheng Meng, Wang Hong, You Rong Huang, Jin Zhen Wang, Yao Hui Li, Di Shi, Hong Jiang
• Keywords: Oxidation State, Soda-Lime Float Glass, Sulfur, X-Ray Absorption near Edge Structure Spectra

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