Thermodynamic evaluation and optimization of the (Na2SO4+ K2SO4+ Na2S2O7+ K2S2O7) system

Sulfation of Condensed Potassium Chloride by SO2

“…50 46 An alternative to a power fit is the Langmuir−Hinshelwood type expression (eq 7) of the type Y SO 2 /(1 + KY SO 2 ) (shown as a solid line for K = 708), which may provide a more accurate extrapolation to higher concentrations of SO 2 . Figure 6 shows results for variation of O 2 .…”

Thermodynamic evaluation and optimization of the (Na2CO3+ Na2SO4+ Na2S + K2CO3+ K2SO4+ K2S) system

“…The thermodynamic data for solid and liquid sulphides and sulphates were taken from Lindberg et al [2,3]. The thermodynamic data for Na 2 CO 3 and K 2 CO 3 were taken from the NIST-JANAF compilations [5], but the melting temperature of Na 2 CO 3 and the temperatures and enthalpies of (solid + solid) transitions of Na 2 CO 3 and K 2 CO 3 were based on the adopted values from the thermodynamic evaluation of Dessureault et al [6].…”

“…In the (Na 2 S + K 2 S) system, a solid solution with a cubic structure has been proposed [2,14]. The thermodynamic properties of the solid solutions in the (Na 2 S + K 2 S) and (Na 2 SO 4 + K 2 SO 4 ) systems were modelled by Lindberg et al [2,3] and the optimized parameters were utilized in this study. The thermodynamic properties of the solid solutions in the other binaries and in the reciprocal systems for (Na 2 CO 3 + Na 2 SO 4 + Na 2 S + K 2 CO 3 + K 2 SO 4 + K 2 S) are described in sections 5 and 6.…”

“…The thermodynamic properties of the condensed phases and the gas in the (Na + K + S) and (Na 2 SO 4 + K 2 SO 4 + Na 2 S 2 O 7 + K 2 S 2 O 7 ) systems have been evaluated in previous works [2,3]. In the present study, an evaluation and optimization of the thermodynamic properties of all condensed phases in the (Na 2 CO 3 + Na 2 SO 4 + Na 2 S + K 2 CO 3 + K 2 SO 4 + K 2 S) system was performed.…”

First evidence of crystalline KHSO4:Mn grown by an aqueous solution method and the investigation of the effect of ionizing radiation exposure

“…There is, for example, considerable interest in understanding the physical properties of doped sulfate ions. Both potassium sulfate (K 2 SO 4 ) and potassium hydrogen sulfate (KHSO 4 ) have attracted sufficient interest because these materials have many variations in the sequence of their phase transitions as well as the ability to react with other elements [1,2].…”