William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA.
Chem Commun (Camb). 2018 Nov 22;54(94):13200-13203. doi: 10.1039/c8cc06587j.
Molecular dynamics simulations are employed to demonstrate the potential of zeolite nanosheets as pervaporation membranes for ethanol extraction. Our results show that zeolite nanosheets can provide orders of magnitude higher fluxes compared to currently available membranes and achieve outstanding separation factors. The dominant role of membrane surfaces in determining the separation performance is also identified and explored at an atomic level. Developing nanosheet membranes with hydrophobic surfaces and/or with a minimal surface silanol density represents the keys to enable highly selective separation processes.
采用分子动力学模拟方法，展示了沸石纳米片作为渗透蒸发膜用于乙醇提取的潜力。研究结果表明，与现有膜相比，沸石纳米片可以提供数量级更高的通量，并实现出色的分离因子。还在原子水平上确定并探讨了膜表面在决定分离性能方面的主导作用。开发具有疏水面和/或最小表面硅醇密度的纳米片膜是实现高选择性分离过程的关键。
