Studies on vacuum condensing point (V. C. P.) in sublimatography (2).
Sublimatographic separation of mixed system. II.
1962 Volume 11 Issue 4 Pages 400-406
Details
1962 Volume 11 Issue 4 Pages 400-406
In order to examine the effect of vapor flow on the V. C. P. in sublimatography, fundamental experiments were carried out on two methods (effusion method and direct method).
The relation between the vapor flowF (mol/sec) in the glass tube with temperature gradient and the V. C. P. was studied and an empirical formula (γPs)n=k' · F was obtained, where γ was Ph/Ps with Ph : pressure of vapor phase and Ps : saturated vapor pressure at the temperature of V. C. P., and F was a value concerning with the heating temperature of the substance th.
From the relations, it is evident that V. C. P. depends upon th, and under a fixed condition, the position where the substance condenses in the tube with temperature gradient is determined by th.
The possibility of separation of any mixture will be presumable from the th-V. C. P. curve for each component in the mixture.
