Removal of Na+ from Ionic Liquids by Zeolite for High Quality Electrolyte Manufacture

Bulletin of the Korean chemical society

Soon Jae Jung¹  Yongseong Seo¹  Grant Mathieson¹  Won Gil Lee¹  Won-Je Cho¹  Byung Chul Kim¹  Kook-Hyun Yu¹ 

关键词: Ionic liquids;    Purification;    1-Ethyl-3-methylimidazolium tetrafluoroborate;    Electrolyte;    Zeolite;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

This study develops a novel method to remove the free cations created during the synthesis of ionic liquid. The cations are removed from the ionic liquid by size-selective adsorption onto chemically surface-modified Zeolite. The porous crystal nano-structure of Zeolite has several electron-rich Al sites to attract cations. While large cations of an ionic liquid cannot access the Zeolite nano-structure, small cations like Na+ have ready access and are adsorbed. This study confirms that: Na+ can be removed from ionic liquid effectively using Zeolite; and, in contrast to the conventional and extensively applied ion exchange resin method or solvent extraction methods, this can be done without changing the nature of the ionic liquid.

【 授权许可】

Unknown