STUDIES IN THE SYSTEM CALCIUM-OXIDE–SULPHUR-DIOXIDE–WATER: II. CALCULATION OF IONIC CONCENTRATIONS

1935 ◽  
Vol 13b (5) ◽  
pp. 308-322
Author(s):  
P. E. Gishler ◽  
O. Maass

The conductivity and vapor pressure data of the system calcium-oxide–sulphur-dioxide–water presented in an earlier paper have been used to calculate ionic concentrations existing in this system, in the temperature and pressure range investigated. Two methods of calculation have been employed, one depending on the combination of vapor pressure and conductivity data, and the other, on conductivity data. For both, recourse was had to the data of Campbell and Maass on the system sulphur-dioxide–water. These methods gave results that are in good agreement with each other. The existence of a complex CaSO3.Ca(HSO3)2 was deduced.Hydrogen ion concentrations over the concentration and temperature range investigated have been calculated and extrapolations made to higher temperatures. These are presented in tabular form. Apart from the theoretical interest, it is pointed out that these results are of value in connection with studies of the delignification of wood by calcium-oxide–sulphur-dioxide–water solutions.

ChemistryOpen ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 216-226
Author(s):  
Mark Bülow ◽  
Moritz Greive ◽  
Dzmitry H. Zaitsau ◽  
Sergey P. Verevkin ◽  
Christoph Held

1989 ◽  
Vol 34 (2) ◽  
pp. 149-156 ◽  
Author(s):  
Robert D. Chirico ◽  
Nguyen An ◽  
William V. Steele ◽  
M. Michael Strube ◽  
Costa Tsonopoulos

2000 ◽  
Vol 54 (3) ◽  
pp. 396-401 ◽  
Author(s):  
E. Robert ◽  
B. Gilbert

Raman spectra of (M, M')F–AlF3 (M, M' =Li, Na, K) molten salts have been obtained at 1293 K. The intensity ratios between the bands that are characteristic of the different complexes are strongly affected by the ratio M/M', especially when one of the alkaline cations is Li+. Its presence together with another cation seems to produce an increase in the acidity of the melt. The result of the deconvolution of the spectra compares well with vapor pressure data from the literature, showing the same kind of deviation. A qualitative explanation is proposed, but a quantitative modeling has not been possible up to now, because there is a lack of thermodynamic data that would allow a comparison with the spectroscopic results.


2006 ◽  
Vol 649 (2) ◽  
pp. 1178-1183 ◽  
Author(s):  
Joseph A. Nuth III ◽  
Frank T. Ferguson

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