Using Thermogravimetry Analysis Technology To Appraise
the Vaporization Enthalpy of 1‑(2-Alkoxyethyl)-3-methylimidazolium
+ [Anion] Ionic Liquids
Posted on 2020-07-21 - 16:17
A series
of 1-(2-alkoxyethyl)-3-methylimidazolium + [anion] ionic
liquids including 1-(2-methoxyethyl) -3-methylimidazolium chloride,
1-(2-methoxyethyl) -3-methylimidazolium dl-threonine, and
1-(2-ethoxyethyl) -3-methylimidazolium dl-threonine were
synthesized and characterized to determine how initial decomposition
temperature, vaporization enthalpy, and thermal stability were affected
by changes in alkoxy chain length and anion. An isothermal thermogravimetric
experiment was carried out on a series of ionic liquids (ILs) by using
a thermogravimetric analyzer. Combining with the Langmuir equation
and Clausius–Clapeyron equation, experimental data were used
to calculate vaporization enthalpy at an average temperature. Comparing
the values of vaporization enthalpy for three ILs, the order is [EOEMIM]Thr >
[MOEMIM]Cl > [MOEMIM]Thr. Thus, the influence of a changing alkoxy
chain on vaporization enthalpy of ILs is large.
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Liu, Lu; Xu, Yu-Ping; Zhao, Yue; Chen, Xia; Tong, Jing; Liu, Qing-Shan (2020). Using Thermogravimetry Analysis Technology To Appraise
the Vaporization Enthalpy of 1‑(2-Alkoxyethyl)-3-methylimidazolium
+ [Anion] Ionic Liquids. ACS Publications. Collection. https://doi.org/10.1021/acs.jced.0c00274
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