Abstract:

Molecule transfer in the nanoconfined space is a common issue in the modern chemical process. However, surface wettability and confined degree in nanoconfined space lead to the effect of asymmetry of the molecular interaction. Such symmetric interaction induces the inhomogeneous and further causes the unavailable of the classical transfer theory. The lack of the transfer theory oriented to the limit can no longer meet the needs of the development of modern industry. This paper summarizes the research work of our team and the frontier of confined transport, and analyzes it based on statistical mechanics and non-equilibrium thermodynamic methods. It is found that the frontier research covers three perspectives. Namely, molecular interaction determines the abnormal fluid state in new free degrees, the abnormal fluid state-dependent fluid transfer phenomenon further decides the confined fluid resistance of fluid transfer. Based on three perspectives, the primary theory of confined transfer resistance is concluded. Furthermore, the primary theory of confined transfer resistance is used to analyze hot research in nanoconfinement conducted by advanced experimental and theoretical works. Finally, this work proposed that combining three perspectives, in terms of the fluid state in the space, may give a framework to develop the nanoconfined transfer theory for guiding the development of modern chemical engineering.

Key words: nanoconfined space, confined transfer, fluid state, transfer resistance

摘要：

纳米限域空间中分子的传递是新一代化工过程的共性问题。限域空间引入界面润湿性与限域自由度，导致固体-流体受到的非对称相互作用显著，使得流体状态大幅度偏离均一主体相，经典传递理论不再适用。面向限域的传递理论的缺失，已不能满足现代化工发展的需求。本文综述本团队及前沿的限域传递研究工作，并基于统计力学与非平衡热力学方法进行分析，发现前沿研究分别涵盖三个角度：新自由度下分子间相互作用力决定流体反常状态，反常状态描述流体限域传递物性，反常传递物性描述限域传递阻力实现通量描述。针对三个角度，总结出限域传递阻力雏形，并从三个角度对限域热点工作初探分析，以限域状态为起点，将三个角度贯通是发展限域传递模型的方向，进而为现代化工发展基础数据和模型。

关键词: 纳米限域空间, 限域传递, 限域状态, 传递阻力