[emim]Ac离子液体的热稳定性分析
Thermal Stability Analysis of[emim]Ac Imidazole Ionic Liquids
韩雨泽 1曲怀仁1
作者信息
摘要
离子液体1-乙基-3-甲基咪唑醋酸盐([emim]Ac)热稳定性采用非等温和等温热重分析法进行研究,分析了气氛和升温速率(β)等因素对离子液体热稳定性的影响,利用3种等转化率法计算该离子液体的活化能.结果表明:在非等温热重实验中,氮气气氛下,随着升温速率增大,分解速率也会随之增大,但热分解存在热传递滞后现象,升温速率为10℃/min时,氮气气氛下的离子液体特征温度较高较稳定.
Abstract
Thermal stability of 1-ethyl-3-methy limidazolium acetate([emim]Ac)is studied by non-isothermal and isothermal thermogravimetry.The effects of atmosphere and heating rate(β)on the thermal stability of ionic liquids are analyzed.The activation energies of ionic liquids are calculated by using three methods.Results show that decomposition rate increases with the increase of heating rate,a heat transfer hysteresis exist in thermal decomposition in nitrogen atmosphere.When heating rate is 10℃/min,the characteristic temperatures of ionic liquid in nitrogen atmospheres is higher and more stable.
关键词
离子液体/热稳定性/动力学分析/活化能Key words
ionic liquid/thermal stability/kinetic analysis/activation energy引用本文复制引用
基金项目
内蒙古直属高校基本科研业务费项目(2021MS05035)
出版年
2024
NETL
NSTL
万方数据