Formation of FeCl(2)/NaCl-nanoparticles in supercritical water investigated by molecular dynamics simulations: nucleation rates.

Formation of FeCl(2)/NaCl-nanoparticles in supercritical water investigated by molecular dynamics simulations: nucleation rates.
复制标题

通过分子动力学模拟研究超临界水中 FeCl(2)/NaCl 纳米颗粒的形成:成核速率

DOI:
10.1039/b805725g
复制
发表时间:
2008
期刊:
Physical chemistry chemical physics : PCCP
影响因子:
--
通讯作者:
B. Kvamme
B. Kvamme
中科院分区:
--
文献类型:
--
作者:
N. Lümmen;B. Kvamme

文献摘要

参考文献

被引文献

相似文献

通过分子动力学模拟研究了FeCl2在含NaCl的超临界水中,温度为798 ~ 873 K,体系密度为0.24 ~ 0.14 g cm−3的不同状态点下的成核和生长。选择NaCl离子对的数目来模拟海水和高盐度卤水中的颗粒形成。刚性SPC/E水用于模拟水分子,而库仑电位和伦纳德-琼斯电位的组合用于模拟离子。采用了两种不同的方法测定成核速率,并对结果进行了比较。我们发现成核速率随温度的升高和体系密度的降低而降低。我们的结果也与我们最近从超临界水中获得的纯FeCl2的研究结果进行了比较。我们发现随着NaCl用量的增加,临界团簇的成核速率增加,尺寸减小。
Nucleation and growth of FeCl2 in supercritical water containing NaCl at different state points between temperatures of 798 and 873 K and system densities between 0.24 and 0.14 g cm−3 have been studied by molecular dynamics simulations. The number of NaCl ion pairs was chosen to simulate particle formation in seawater and brine of higher salinity. Rigid SPC/E water was used to model the water molecules while a combination of Coulomb and Lennard-Jones potentials was used for the ions. Two different methods for determination of nucleation rates are applied and their results compared. We find decreasing nucleation rates with both increasing temperature and decreasing system density. Our results are also compared to those we recently obtained in an investigation of pure FeCl2 from supercritical water. We find both increasing nucleation rates and a decreasing size of the critical cluster with increasing amount of NaCl.
水中多价过渡金属离子分子动力学从头算对势的非加和性
DOI: 10.1063/1.452130
发表时间: 1987
影响因子: 4.4
作者:
L. Curtiss;J. W. Halley;J. Hautman;A. Rahman
通讯作者: A. Rahman
硬球液体中晶体成核的相场理论
DOI: 10.1063/1.1618213
发表时间: 2003
影响因子: 4.4
作者:
L. Gránásy;T. Pusztai;Z. Jurek;M. Conti;B. Kvamme
通讯作者: B. Kvamme
DOI: --
发表时间: 2001
期刊:
影响因子: --
作者:
Tina M. Hayward;I. M. Svishchev
通讯作者: I. M. Svishchev
通过分子动力学模拟测定超临界水中 FeCl2 的成核率
DOI: 10.1016/j.supflu.2008.07.017
发表时间: 2008
影响因子: 3.9
作者:
N. Lümmen;B. Kvamme
通讯作者: B. Kvamme
DOI: 10.1021/j100308a038
发表时间: 1987-11-19
影响因子: --
作者:
BERENDSEN, HJC;GRIGERA, JR;STRAATSMA, TP
通讯作者: STRAATSMA, TP