Microscopic insights into nucleation in a sulfuric acid-water vapor mixture based on molecular dynamics simulation.
J Chem Phys
; 130(10): 104705, 2009 Mar 14.
Article
em En
| MEDLINE
| ID: mdl-19292547
ABSTRACT
We conducted a molecular dynamics simulation of the binary nucleation in the vapor mixture consisting of water and a small amount of sulfuric acid and investigated the microscopic process in relation to the structure of the hydrate (binary cluster composed of sulfuric acid and water). It was observed that the nucleation rate increased with the concentration of sulfuric acid. It was found that the formation of the hydrate is stable as long as its size is small enough, and the hydrate growth by coagulation played a major part in the enhanced nucleation. The rate of coagulation became larger by the uptake of more sulfuric acid in the hydrate, while it was suppressed with increasing the hydration number. We found that such features came from the structure of the small hydrate which was a multishell structure composed of an inner shell of sulfuric acid and diffused outer shell of water.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Vapor
/
Ácidos Sulfúricos
/
Modelos Químicos
Idioma:
En
Revista:
J Chem Phys
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Japão