Low viscosity lactam-based ionic liquids with carboxylate anions: Synthesis, characterization, thermophysical properties and mutual miscibility of ionic liquid with alcohol, water, and hydrocarbons
作者:Aline M.M. Bessa、Matheus S.C. Venerando、Filipe X. Feitosa、Lorena M. Alexandre e Silva、Fabiano André Narciso Fernandes、Rílvia S. de Santiago-Aguiar、Hosiberto B. de Sant'Ana
DOI:10.1016/j.molliq.2020.113586
日期:2020.9
acid (BTA), γ-butyrolactam + butyric acid (BTB), and γ-butyrolactam + hexanoic acid (BTH); and, ε-caprolactam + acetic acid (CPA) and ε-caprolactam + hexanoic acid (CPH), all systems presenting low viscosity. All synthesized ILs were characterized by FTIR and 1H NMR spectroscopies. Volumetric and transport properties (density and viscosity), along with thermal decomposition and ionic conductivity analyses
低粘度内酰胺基离子液体(ILs)是通过环状酰胺(内酰胺)(例如γ-丁内酰胺,ε-己内酰胺,12-氨基十二烷内酰胺和1-辛基-2-吡咯烷酮)与布朗斯台德酸之间的中和反应合成的(乙酸,丁酸或己酸),总共八个系统。从该实验基质中,形成了以下五个IL:γ-丁内酰胺+乙酸(BTA),γ-丁内酰胺+丁酸(BTB)和γ-丁内酰胺+己酸(BTH);ε-己内酰胺+乙酸(CPA)和ε-己内酰胺+己酸(CPH),所有体系的粘度都较低。所有合成的IL均通过FTIR和1表征1 H NMR光谱学。已经通过实验确定了体积和传输性质(密度和粘度)以及热分解和离子电导率分析。在293.15 K和大气压(P = 101.325 kPa)下测定了这些IL与正丁醇,水,甲苯,庚烷,乙苯,苯乙烯,环己烷和环己烯体系的互溶性。讨论了阳离子和阴离子结构对混合物的影响。含有低链阴离子的离子液体与庚烷形成两相,并且可以与芳烃,水和正丁醇完