云南化工2025，Vol.52Issue(9)：48-52,5.DOI:10.3969/j.issn.1004-275X.2025.09.10
1-乙基-3-甲基咪唑二氰胺盐的合成与性能研究
Synthesis and Performance of 1-Ethyl-3-Methylimidazolium Dicyanamide
摘要
Abstract
In this study,[EMIm]DCA was synthesized through a two-step process:N-alkylation of 1-methylimidazole with bromoethane to form 1-ethyl-3-methylimidazolium bromide([EMIm]Br),followed by ion exchange with sodium dicyanamide.The structure and properties of the products were systematically characterized using FT-IR,TG-DTG,and H-NMR techniques.Optimization results revealed that solvent-free N-alky-lation achieved 97.9%yield of[EMIm]Br under stoichiometric conditions(1-methylimidazole/bromoethane molar ratio=1/1.1)at 30℃.Subsequent ion exchange in acetone at 60℃for 48 h yielded 95.9%[EMIm]DCA.The synthesized ionic liquid exhibited superior thermal sta-bility(decomposition temperature>250℃)and broad solubility in both polar and non-polar solvents.This developed protocol features opera-tional simplicity,high efficiency,and cost-effectiveness,providing a technically viable pathway for industrial production of functional ionic liq-uids.关键词
1-甲基咪唑/溴乙烷/1-乙基-3-甲基咪唑鎓二氰胺盐/离子液体/二氰胺钠Key words
1-Methylimidazole/Bromoethane/1-Ethyl-3-Methylimidazolium Dicyanamide/Lonic Liquid/Sodium Dicyanamid分类
通用工业技术引用本文复制引用
聂炜峻,刘宁,熊瑞霞,陈思琪,陈晓英,王磊,何思思,贺晶..1-乙基-3-甲基咪唑二氰胺盐的合成与性能研究[J].云南化工,2025,52(9):48-52,5.基金项目
湖南省自然科学基金项目(2025JJ70140) （2025JJ70140）
湖南省教育厅科学研究重点项目(22A0628) （22A0628）
国家级大学生创新创业训练计划项目(S202411528021,S202511528049X) （S202411528021,S202511528049X）
湖南省大学生创新创业训练计划项目(S202411528073,S202411528081X). （S202411528073,S202411528081X）
