Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Square Wave Voltammetry in Cathode Ray Tube Glass Melt Containing Different Polyvalent Ions

서로 다른 다가이온을 함유한 음극선관 전면유리 용융체의 Square Wave Voltammetry

  • Kim, Ki-Dong (Faculty of Materials Science and Nano-chemical Engineering, Kunsan National University) ;
  • Kim, Hyo-Kwang (Faculty of Materials Science and Nano-chemical Engineering, Kunsan National University) ;
  • Kim, Young-Ho (Faculty of Materials Science and Nano-chemical Engineering, Kunsan National University)
  • 김기동 (군산대학교 신소재나노화학공학부) ;
  • 김효광 (군산대학교 신소재나노화학공학부) ;
  • 김영호 (군산대학교 신소재나노화학공학부)
  • Published : 2007.06.30
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Abstract

With aids of square wave voltammetry (SWV) the redox behavior for various combination of polyvalent ions (Sb+Fe, Sb+Zn, Sb+Ce+Ti+Zn) was investigated in alkali-alkaline earth-silica CRT (Cathode Ray Tube) glass melts. The current-potential curve so called voltammogram was produced at temperature range of 1400 to $1000^{\circ}C$ under the scanned potential between 0 and -800 mV at 100 Hz. In the case of the Sb+Fe and Sb+Zn doped melts, peak for $Sb^{3+}/Sb^0$ shown voltammogram was shifted to negative direction comparing to the only Sb doped melts. However, according to voltammogram of Sb+Ce+Ti+Zn doped melt, Ti and Ce except Zn had hardly any influence on the redox reaction of Sb. Based on the temperature dependence of the peak potential, standard enthalpy (${\Delta}H^0$) and standard entropy (${\Delta}S^0$) for the reduction of $Fe^{3+}$ to $Fe^{2+}$, $Sb^{3+}$ to $Sb^0$, $Zn^{2+}$ to $Zn^0$ and $Ti^{2+}$ to $Ti^0$ in each polyvalent ion combination of CRT glass melts were calculated.

Keywords

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  1. Redox Reaction of Multivalent Ions in Glass Melts vol.52, pp.2, 2015, https://doi.org/10.4191/kcers.2015.52.2.83