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首页> 外文期刊>ACS Omega >Asphaltene Aggregation in Aqueous Solution Using Different Water Models: A Classical Molecular Dynamics Study
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Asphaltene Aggregation in Aqueous Solution Using Different Water Models: A Classical Molecular Dynamics Study

机译:使用不同水模型的水溶液中的沥青质聚集:经典分子动力学研究

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摘要

The aggregation behavior of asphaltene in aqueous solution is systematically investigated based on a classical molecular dynamics study. In this work, a novel approach is adopted in order to investigate the structural and dynamical properties of the asphaltene nanoaggregates using different water models. The end-to-end distance of the asphaltene molecule is probed in order to understand the aggregation behavior in aqueous solution. The accuracy of different water models, that is, simple point charge, TIP4P-D, and TIP5P, is thoroughly investigated. In order to probe the dynamical properties of the asphaltene nanoaggregates, the transport coefficients, namely, diffusion coefficient and shear viscosity, are computed. The obtained results highlight the importance of using the appropriate water model in order to accurately study the aggregation behavior of asphaltene in aqueous solution.
机译:基于经典分子动力学研究,系统地研究了沥青质在水溶液中的聚集行为。在这项工作中,采用了一种新方法,以研究使用不同水模型的沥青质纳米聚糖的结构和动态性质。探测沥青质分子的端到端距离以了解水溶液中的聚集行为。彻底研究了不同水模型的准确性,即简单的点电荷,Tip4P-D和Tip5P。为了探测沥青质纳米聚糖的动态性质,计算输送系数,即扩散系数和剪切粘度。所获得的结果突出了使用适当水模型的重要性,以便准确地研究水溶液中沥青质的聚集行为。

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