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Role of Guest Molecules on the Hydrate Growth at Vapor‐Liquid Interfaces
Author(s) -
Bai Dongsheng,
Liu Bei,
Chen Guangjin,
Zhang Xianren,
Wang Wenchuan
Publication year - 2013
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.14011
Subject(s) - molecule , hydrate , molecular dynamics , chemistry , chemical physics , clathrate hydrate , nanotechnology , computational chemistry , materials science , organic chemistry
Systematic molecular dynamics simulations have been performed to illustrate the roles of guest molecules played in the process of hydrate growth at vapor‐liquid interfaces. In our simulations, guest molecules are represented by a commonly used single‐site Lennard–Jones model, and the roles of guest molecules on hydrate growth have been investigated separately from the effect of water–guest molecule attractive interaction ε and that of molecular size σ, respectively. Our simulation results demonstrate that the water‐guest molecule attraction regulates the pathway and rate of nucleus growth, whereas the size of guest molecules determines the dynamically preferable structure. © 2013 American Institute of Chemical Engineers AIChE J , 59: 2621–2629, 2013