2026-04-17T08:01:23Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/47042024-11-05T10:58:45Zcom_10259_4393com_10259_5086com_10259_2604col_10259_4394
González López, Juan Antonio
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600
García de la Fuente, Isaías
df93aa25-48ce-4b58-a493-8e7d15de3821
500
Cobos, José Carlos .
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500
Alonso Tristán, Cristina
23
500
0000-0003-4733-7391
Sanz, Luis Felipe
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2018-01-17T09:04:41Z
2018-01-17T09:04:41Z
2015-01
0888-5885
http://hdl.handle.net/10259/4704
10.1021/ie504282s
1-Alkanol + alkanenitrile or + benzonitrile systems have been investigated by means of the molar excess
functionsenthalpies (Hm E ), isobaric heat capacities (Cp,m
E ), volumes (Vm E ), and entropiesand using the Flory model and the
concentration−concentration structure factor (SCC(0)) formalism. From the analysis of the experimental data available in the
literature, it is concluded that interactions are mainly of dipolar type. In addition, large Hm E values contrast with rather low Vm E
values, indicating the existence of strong structural effects. Hm E measurements have been used to evaluate the enthalpy of the
hydroxyl−nitrile interactions (ΔHOH−CN). They are stronger in methanol systems and become weaker when the alcohol size
increases. In solutions with a given short chain 1-alkanol (up to 1-butanol), the replacement of ethanenitrile by butanenitrile
weakens the mentioned interactions. Application of the Flory model shows that orientational effects exist in methanol or 1-
nonanol, or 1-decanol + ethanenitrile mixtures. In the former solution, this is due to the existence of interactions between unlike
molecules. For mixtures including 1-nonanol or 1-decanol, the systems at 298.15 K are close to their UCST (upper critical
solution temperature), and interactions between like molecules are dominant. Orientational effects also are encountered in
methanol or ethanol + butanenitrile mixtures because self-association of the alcohol plays a more important role. Aromaticity
effect seems to enhance orientational effects. For the remainder of the systems under consideration, the random mixing
hypothesis is attained to a rather large extent. Results from the application of the SCC(0) formalism show that homocoordination
is the dominant trend in the investigated solutions, and are consistent with those obtained from the Flory model.
application/pdf
eng
American Chemical Society
Industrial & Engineering Chemistry Research. 2015, V. 54, n. 1, p. 550–559
https://doi.org/10.1021/ie504282s
Ingeniería química
Chemical engineering
Orientational Effects and Random Mixing in 1‑Alkanol + Nitrile Mixtures
info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
info:eu-repo/semantics/openAccess
THUMBNAIL
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González-IECR_2015.pdf
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LICENSE
license.txt
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González-IECR_2015.pdf.txt
González-IECR_2015.pdf.txt
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10259/4704
oai:riubu.ubu.es:10259/4704
2024-11-05 11:58:45.381
Repositorio Institucional de la Universidad de Burgos
bubrep@ubu.es
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