具有离子液体性质的有机硅膜用于甲苯/氢气混合物的分离

Hirota Yuichiro, Maeda Yohei, Yamamoto Yusuke, Miyamoto Manabu, Nishiyama Norikazu

Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan.

Department of Chemistry and Biomolecular Science, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.

Materials (Basel). 2017 Aug 3;10(8):901. doi: 10.3390/ma10080901.

In this study, we present a new concept in chemically stabilized ionic liquid membranes: an ionic liquid organosilica (ILOS) membrane, which is an organosilica membrane with ionic liquid-like properties. A silylated ionic liquid was used as a precursor for synthesis. The permselectivity, permeation mechanism, and stability of the membrane in the H₂/toluene binary system were then compared with a supported ionic liquid membrane. The membrane showed a superior separation factor of toluene/H₂ (>17,000) in a binary mixture system based on a solution-diffusion mechanism with improved durability over the supported ionic liquid membrane.

在本研究中，我们提出了化学稳定离子液体膜中的一个新概念：离子液体有机硅（ILOS）膜，它是一种具有类离子液体性质的有机硅膜。使用硅烷化离子液体作为合成前体。然后将该膜在H₂/甲苯二元体系中的渗透选择性、渗透机理和稳定性与负载型离子液体膜进行了比较。基于溶液扩散机理，该膜在二元混合体系中对甲苯/H₂显示出优异的分离因子（>17,000），且耐久性优于负载型离子液体膜。