Permeation of Light Gases through Hexagonal Ice

Materials

Joana Durão¹ 

[1] IBMC—Institute for Molecular and Cell Biology, University of Porto Porto, Rua do Campo Alegre 823, Porto 4150-180, Portugal; E-Mail:

关键词: ice;    light gases;    diffusion;   

DOI  :  10.3390/ma5091593

来源: mdpi

【 摘 要 】

Gas separation using porous solids have attracted great attention due to their energetic applications. There is an enormous economic and environmental interest in the development of improved technologies for relevant processes, such as H₂ production, CO₂ separation or O₂ and N₂ purification from air. New materials are needed for achieving major improvements. Crystalline materials, displaying unidirectional and single-sized pores, preferentially with low pore tortuosity and high pore density, are promising candidates for membrane synthesis. Herein, we study hexagonal ice crystals as an example of this class of materials. By slowly growing ice crystals inside capillary tubes we were able to measure the permeation of several gas species through ice crystals and investigate its relation with both the size of the guest molecules and temperature of the crystal.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.