منابع مشابه
Modifier Interaction and Mixed-Alkali Effect in Bond Constraint Theory Applied to Ternary Alkali Metaphosphate Glasses
Introducing an interaction parameter γ, we implement modifier interaction and the mixed-alkali effect into bond constraint theory and apply this extension for simplistic property prediction on ternary phosphate glasses. The severity of the mixed-alkali effect results from the interplay of two simultaneous contributions: bond constraints on the modifier species soften and stiffen with decreasing...
متن کاملThe H2O solubility of alkali basaltic melts: an experimental study
Experiments were conducted to determine the water solubility of alkali basalts from Etna, Stromboli and Vesuvius volcanoes, Italy. The basaltic melts were equilibrated at 1,200°C with pure water, under oxidized conditions, and at pressures ranging from 163 to 3,842 bars. Our results show that at pressures above 1 kbar, alkali basalts dissolve more water than typical mid-ocean ridge basalts (MOR...
متن کاملThermodynamic Properties of Alkali Nitrate—Silver Nitrate Melts
E M F measurements were performed on a chemical cell containing a silver and a nitrate electrode. The systems N a N 0 3 + A g N 0 3 , L i N 0 3 + A g N 0 3 , and pure A g N 0 3 were investigated in a temperature range of 240 ° C to 310 ° C and in the total concentration range permitted by the phase diagram. We f ound a linear dependence of the E M F on temperature. Six constants, characteristic...
متن کاملIsomerisation of 1,4-dichlorobenzene using highly acidic alkali chloroaluminate melts.
The isomerisation reaction of 1,4-dichlorobenzene leading to the thermodynamically favoured and technically desired 1,3-dichlorobenzene has been studied comparing highly acidic chloroaluminate melts with organic imidazolium and alkali metal ions. Interestingly, the inorganic melts show much higher reactivity and full recyclability if small AlCl3 losses are compensated and the reaction is carrie...
متن کاملIonic conductivity and mixed-ion effect in mixed alkali metaphosphate glasses.
In this work, mixed alkali metaphosphate glasses based on K-Na, Rb-Na, Rb-Li, Cs-Na and Cs-Li combinations were studied by differential scanning calorimetry (DSC), complex impedance spectroscopy, and Raman spectroscopy. DSC analyses show that both the glass transition (Tg) and melting temperatures (Tm) exhibit a clear mixed-ion effect. The ionic conductivity shows a strong mixed-ion effect and ...
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ژورنال
عنوان ژورنال: ECS Proceedings Volumes
سال: 1981
ISSN: 0161-6374,2576-1579
DOI: 10.1149/198110.0256pv