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2017 | OriginalPaper | Buchkapitel

Acetone-Water Mixtures: Molecular Dynamics Using a Semiempirical Intermolecular Potential

verfasst von : Noelia Faginas-Lago, Margarita Albertí, Andrea Lombardi, Federico Palazzetti

Erschienen in: Computational Science and Its Applications – ICCSA 2017

Verlag: Springer International Publishing

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Abstract

A theoretical study of some acetone -water solutions is performed considering a total number of molecules equal to 1000. A force field for the water-acetone interaction is presented. To this purpose we have considered four interaction centers on the acetone molecule and only one on the small water molecule. Then, the non electrostatic intermolecular interaction between pairs of interaction centers placed on different molecules has been modeled adopting Improved Lennard-Jones (ILJ) functions, which sum has been combined with the electrostatic interaction contribution (derived from the charge distributions on the molecules). The potential model has been used to perform some preliminary Molecular Dynamic simulations of the density at 298.15 K of temperature and 1 atm of pressure for two different values of the acetone molar fractions, x\(_{\mathrm {acet}}\) = 0.745 and 0.986. The systems, formed by 1000 molecules, were previously thermalized at the selected temperature using the NVT ensemble. Production runs have been performed from the equilibrated systems using the NpT ensemble.

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Nächstes Kapitel Synchronized Content and Metadata Management in a Federation of Distributed Repositories of Chemical Learning Objects
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Metadaten
Titel
Acetone-Water Mixtures: Molecular Dynamics Using a Semiempirical Intermolecular Potential
verfasst von
Noelia Faginas-Lago
Margarita Albertí
Andrea Lombardi
Federico Palazzetti
Copyright-Jahr
2017
Buch
Computational Science and Its Applications – ICCSA 2017

Print ISBN: 978-3-319-62397-9

Electronic ISBN: 978-3-319-62398-6

Copyright-Jahr: 2017

DOI
https://doi.org/10.1007/978-3-319-62398-6_1

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