Author
Abstract
The solubility of CO2 in the non-volatile compounds of n-Hexadecane,
Diphenylmetnane, Diphenyl ethane, Ethyl benzene and of Nitrogen in n-
Hexadecane, at temperature range 298.15-358.15 K are measured at partial
pressure of one atmosphere, Falling-film flow technique was used in the present
experimental work.
It is seen that in most cases the solubility is decreased at the temperature
increased, though in the case of the Nitrogen/n-Hexadecane system the reverse is
true. The effect is probably related to the decrease in solvent density which occurs
as the temperature raises. For systems of low Solubility ,this effect tends to counter
balance the increase tendency for solute molecules to "escape" from the solvent,
arising from their increase kinetic energy . In addition ,the binary interaction
constant (LAB) was calculated by fitting the mole fraction solubility of solute gases
CO2 and N2 by using Redlich-Kwong equation of state for predicting phase data.
The interaction constant LAB was calculated from the following expression:
= 1− ( )−0.5 ...........(1) AB AB A B L a a a
Keywords
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