Ionic Liquid with Silyl Substituted Cation: Thermophysical and CO
<sub>2</sub>
/N
<sub>2</sub>
Permeation Properties
作者:Andreia S. L. Gouveia、Bruna Soares、Sofia Simões、Dmitrii Y. Antonov、Elena I. Lozinskaya、Benilde Saramago、Alexander S. Shaplov、Isabel M. Marrucho
DOI:10.1002/ijch.201800149
日期:2019.9
Novel functionalized ionic liquid (IL) combining an imidazolium‐based cation with branched alkyl chain bearing silyl group, 1‐methyl‐3‐(2‐methyl‐3‐(trimethylsilyl)propyl)imidazolium ([Si−C1−C3‐mim]+), and bis(trifluoromethylsulfonyl)imide ([NTf2]−) anion was synthesized and its thermophysical properties (density, viscosity, surface tension, surface entropy and enthalpy, thermal stability) were studied
新的官能化离子液体(IL)具有支链烷基链轴承甲硅烷基,1-甲基-3-(2-甲基-3-(三甲基硅烷基)丙基)咪唑鎓([的Si-C结合的咪唑鎓基阳离子1 -C 3 - mim] +)和双(三氟甲基磺酰基)酰亚胺([NTf 2 ] -)阴离子,并在较宽的温度范围内研究了其热物理性质(密度,粘度,表面张力,表面熵和焓,热稳定性)并进行了比较。具有直链烷基([C n- mim] [NTf 2 ])和硅氧烷([(SiOSi)C 1 mim] [NTf 2 ])侧链的IL 。发现在25°C [Si-C 1 -C3 [mim] [NTf 2 ]是一种液体,其动态粘度为224 cP(224 mPa s),密度为1.32 g cm -3。与通常已知的[C n- mim] [NTf 2 ](n = 2-4)相比,带有三甲基甲硅烷基端基的侧支链烷基链的存在可防止IL的结晶,并导致更高的粘度和更低的密度。由于发现表