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arXiv 1205.1983cond-mat.stat-mechcond-mat.soft
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缔合格子气模型中溶解度最小值与密度最大温度的关系

Connection Between Minimum of Solubility and Temperature of Maximum Density in an Associating Lattice Gas Model

Marcia M. Szortyka, Maurício Girardi, Vera B. Henriques, Marcia C. Barbosa

摘要:

本文研究了硬球气体在缔合格子气(ALG)溶剂中的溶解度。将溶质浓度为5%时的溶液相图与原始无溶质模型的相图进行了比较。通过蒙特卡罗模拟和集团近似模型的性质进行了研究。通过模拟计算模型的溶解度,并显示出表现出作为温度的函数的最小值。在不同的溶剂化学势下,最小溶解度线(TmS)与最大密度线(TMD)重合。

英文摘要:

In this paper we investigate the solubility of a hard - sphere gas in a solvent modeled as an associating lattice gas (ALG). The solution phase diagram for solute at 5% is compared with the phase diagram of the original solute free model. Model properties are investigated thr ough Monte Carlo simulations and a cluster approximation. The model solubility is computed via simulations and shown to exhibit a minimum as a function of temperature. The line of minimum solubility (TmS) coincides with the line of maximum density (TMD) for different solvent chemical potentials.

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