The behaviour of liquid alkanes near interfaces
The behaviour of liquid alkanes near interfaces
复制标题
界面附近液态烷烃的行为
DOI：
10.1080/00268970009483289
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
W. Smith
中科院分区：
文献类型：
--
作者：
P. Smith;R. Lynden;W. Smith
为了研究固体-液体和液体-蒸汽界面附近的分子结构和动力学，在许多温度下对蜡状基底上支撑的液体烷烃厚膜进行了模拟。研究了丁烷、辛烷及其混合物的膜。在固体表面附近，发现液体是结构化的，分子扩散减慢。然而，有没有证据表明，在这个界面上的冻结层，即使接近散装冻结温度。混合液体在两个界面处表现出相当大的分离，其中丁烷在液-气界面处优先吸收，辛烷在液-固界面处优先吸收。
Simulations of thick films of liquid alkanes supported on a wax-like substrate were carried out at a number of temperatures in order to investigate the structure and dynamics of molecules near the solid-liquid and the liquid-vapour interfaces. Films of butane, octane and a mixture were investigated. Near the solid surface the liquids were found to be structured and molecular diffusion slowed. However, there was no evidence of a frozen layer at this interface even near the bulk freezing temperature. The mixed liquid showed considerable segregation at both interfaces with preferential absorption of butane at the liquid-vapour interface and octane at the liquid-solid interface.