Solute Precipitate Nucleation: A Review of Theory and Simulation Advances

Solute Precipitate Nucleation: A Review of Theory and Simulation Advances
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溶质沉淀成核:理论和模拟进展回顾

DOI:
10.1002/9781118755815.ch03
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发表时间:
2014
影响因子:
--
通讯作者:
B. Peters
B. Peters
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
V. Agarwal;B. Peters

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这一章集中在一个前沿的分子模拟:从溶液中析出的溶质成核。本章涉及溶质沉淀物成核的模拟与固定数量的溶质和溶剂分子模拟的“封闭系统”。两个简单的情况下,异质成核被认为是:(i)一个球冠模型成核的硬平面和(ii)一个透镜模型成核在流体-流体界面。在发现两步成核之后的十年中,一些计算研究已经指出两步成核是甚至在不存在亚稳流体-流体临界点的点处发生的更普遍的现象。稀有事件模拟方法可以放宽经典成核理论(CNT)的许多假设。本章最后对激光诱导成核、甲烷水合物和碳酸钙成核进行了案例研究。
This chapter focuses on a frontier for molecular simulation: nucleation of solute precipitates from solution. The chapter refers to simulations of solute precipitate nucleation with a fixed number of solute and solvent molecules simulations of “closed systems”. Two simple cases of heterogeneous nucleation are considered: (i) a spherical cap model for nucleation on a hard flat surface and (ii) a lens model for nucleation at fluid–fluid interfaces. Over the decade following the discovery of two'step nucleation, several computational studies have pointed to two'step nucleation as a more general phenomena occurring even at points where there is no metastable fluid–fluid critical point. Rare events simulation methods can relax many of the assumptions made by classical nucleation theory (CNT). The chapter concludes with case studies on laser'induced nucleation, and on nucleation of methane hydrates and calcium carbonate.
DOI: 10.1021/cg300750c
发表时间: 2012-09
影响因子: 3.8
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