2024-08-03T17:29:55Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/47052021-11-10T09:38:27Zcom_10259_4393com_10259_5086com_10259_2604col_10259_4394
00925njm 22002777a 4500
dc
Alonso Tristán, Cristina
author
González, Juan Antonio
author
García de la Fuente, Isaías .
author
Cobos, José Carlos .
author
2014-06
Coexistence curves for the liquid−liquid equilibria (LLE) of 1-phenylmethanamine
(benzylamine) + CH3(CH2)nCH3 (n = 8, 9, 10, 12, 14) have been
determined using the critical opalescence method by means of a laser scattering technique.
All of the LLE curves show an upper critical solution temperature (UCST), which increases
with increasing n. For systems including a given n-alkane, the UCST decreases in the
sequence aniline > 2-methylaniline (o-toluidine) > benzylamine > N-methylaniline >
pyridine. This means that amine−amine interactions become weaker in the same order.
Most of the DISQUAC interaction parameters for the aliphatic/amine (a,n) and aromatic/
amine (b,n) contacts previously determined for solutions with aniline, o-toluidine, or
N-methylaniline have been used for the representation of the LLE data. Only the first
dispersive interaction parameter of the (a,n) contact has been modified. The coordinates of
the critical points are correctly represented by the model.
0021-9568
http://hdl.handle.net/10259/4705
10.1021/je500283s
Thermodynamics of Mixtures Containing Amines. XV. Liquid–Liquid Equilibria for Benzylamine + CH3(CH2)nCH3 (n = 8, 9, 10, 12, 14)