Redox Behavior of Sn and S in Alkaline Earth Borosilicate Glass Melts with 1 mol% Na2O

2009 ◽  
Vol 46 (3) ◽  
pp. 271-274 ◽  
Author(s):  
Ki-Dong Kim ◽  
Hyo-Kwang Kim
Keyword(s):  
Borosilicate Glass ◽  
Alkaline Earth ◽  
Redox Behavior ◽  
Glass Melts

Investigation of the Redox Behavior of Technetium in Borosilicate Glass Melts by Voltammetry

1988 ◽  
Vol 127 ◽  
Author(s):  
E. Freude ◽  
W. Lutze ◽  
C. Rüssel ◽  
H. A. Schaeffer
Keyword(s):  
Borosilicate Glass ◽  
Redox Reactions ◽  
Electrochemical Measurements ◽  
Redox Behavior ◽  
Glass Melts ◽  
Reducing Conditions ◽  
Waste Vitrification ◽  
T State

ABSTRACTTechnetium is a potentially hazardous radionuclide in the waste vitrification process as its oxides are volatile. Electrochemical measurements, i.e. potentiometry and voltammetry are applied to investigate the redox reactions of Tc in the glass melt. Re is studied for comparison. Under normal oxidizing conditions Tc is in the -T-state, and substancial losses of Tc occur as a result of compound volatility. Reducing conditions lead to the formation of TcO2, which precipitates from the melt. Stronger reducing conditions lead to the formation of metallic Tc

Nitrogen and Argon in Borosilicate Glass: Solubility, Diffusivity, Residual Gas Concentration and Behaviour of Bubbles in Glass Melts, Containing Both Gases

2008 ◽  
Vol 39-40 ◽  
pp. 437-442 ◽  
Author(s):  
Detlef Köpsel ◽  
Markus Booβ ◽  
M. Opyd ◽  
Maria Louisa Aigner
Keyword(s):  
High Temperature ◽  
Gas Exchange ◽  
Borosilicate Glass ◽  
Diffusion Coefficients ◽  
Molten Glass ◽  
Extraction Method ◽  
Vacuum Extraction ◽  
Glass Melts ◽  
Gas Concentration ◽  
Residual Gas

Diffusivities of nitrogen and argon in a borosilicate glass were determined with two different methods: (1) from gas exchange experiments between molten glass and bubbles containing nitrogen and argon, and (2) from solution rates of nitrogen and argon in glass during saturation experiments. Between 1200°C and 1580°C the diffusion coefficients of nitrogen and argon yielded the following equations:      − = − RT s m DN 134900 exp 10 22 . 1 ] / [ 6 . 2 2 and      − = − RT s m DAr 125300 exp 10 08 . 1 ] / [ 6 . 2 , with R=8.314 J/(mol.K). The solubilities and residual gas concentration in the glass which are necessary for the calculation of the diffusivities were determined with the high temperature vacuum extraction method.

Effect of Al2O3 Nano-Filler on Properties of Alkali/Alkaline-Earth Borosilicate Glass Composite Sealants

2015 ◽  
Vol 15 (7) ◽  
pp. 5267-5270
Author(s):  
Dong Bok Lee ◽  
Kwang-Joong Kim ◽  
Gahee Yoo ◽  
Sung Park ◽  
Jae Chun Lee
Keyword(s):  
Borosilicate Glass ◽  
Alkaline Earth ◽  
Glass Composite

scholarly journals Corrosion of inconel in high-temperature borosilicate glass melts containing simulant nuclear waste

2017 ◽  
Author(s):  
Xianhe Mao ◽  
Xiaoning Yuan ◽  
Clive T. Brigden ◽  
Jun Tao ◽  
Neil C. Hyatt ◽  
...  
Keyword(s):  
High Temperature ◽  
Nuclear Waste ◽  
Borosilicate Glass ◽  
Glass Melts

ChemInform Abstract: Volatile Losses from Sphene Glass-Ceramic and Borosilicate Glass Melts.

ChemInform ◽  
1988 ◽  
Vol 19 (38) ◽  
Author(s):  
E. R. VANCE ◽  
P. J. HAYWARD ◽  
R. F. HAMON
Keyword(s):  
Borosilicate Glass ◽  
Glass Ceramic ◽  
Glass Melts
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