Pressure effects in confined nanophases

被引:26
作者
Coasne, B. [1 ,2 ]
Long, Y. [3 ,4 ]
Gubbins, K. E. [3 ]
机构
[1] MIT, UMI CNRS MIT 3466, MSE 2, Cambridge, MA 02139 USA
[2] MIT, Dept Civil & Environm Engn, Cambridge, MA 02139 USA
[3] N Carolina State Univ, Dept Chem & Biomol Engn, Raleigh, NC 27695 USA
[4] Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 117576, Singapore
基金
美国国家科学基金会;
关键词
confinement; mechanical properties; high-pressure effects; porous materials; ADSORPTION-INDUCED DEFORMATION; LENNARD-JONES FLUID; SLIT PORES; WATER; MIXTURES; NANOPORES; SURFACE; MODEL; AMORPHIZATION; DIMERIZATION;
D O I
10.1080/08927022.2013.829227
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this article, we review how pressure effects in pores affect both the physics of the confined fluid and the properties of the host porous material. Molecular simulations in which high-pressure effects were observed are first discussed; we will see how the strong dependence on bulk phase pressure of the freezing temperature of a fluid confined in nanopores can be explained by important variations of the pressure within the pore. We then discuss recent works in which direct calculations of the pressure tensor of fluids confined in pores provide evidence for large pressure enhancements. Finally, practical applications of these pressure effects in which gas adsorption in microporous solids (pore size <2nm) was found to enhance their mechanical properties by increasing the elastic modulus by a factor 4 are discussed.
引用
收藏
页码:721 / 730
页数:10
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