This work presents the synthesis and analysis of the thermal decomposition kinetics and mechanisms of long alkyl chain ionic liquids (ILs) with cations 1-decyl-3-methylimidazolinium ([C₁₀MIM]⁺), 1-dodecyl-3-methylimidazolinium ([C₁₂MIM]⁺), and 1-hexadecyl-3-methylimidazolinium ([C₁₆MIM]⁺) and butanoate ([C₃COO]⁻) and heptanoate ([C₆COO]⁻) anions. The kinetics analysis was performed using the Kissinger-Akahira-Sunose isoconversional methodology. The results indicated that the carboxylate ILs are less thermally stable than their bromide analogues and the order of thermal stability was explained by the values of the kinetic parameters (E_a and lnA) and their variation with α. For most of the studied carboxylate ILs there was a considerable variation in E_a as the decomposition progressed, indicating multiple decomposition steps. The thermal decomposition mechanism was studied by analyzing the thermal degradation residue from ¹H NMR spectroscopy.

这项工作介绍了具有阳离子1-癸基-3-甲基咪唑啉鎓 ([C ₁₀ MIM] ⁺ )、1-十二烷基-3-甲基咪唑啉鎓 ([ C ₁₂ MIM] ⁺）和1-十六烷基-3-甲基咪唑啉鎓（[C ₁₆ MIM] ⁺）以及丁酸根（[C ₃ COO] ^-）和庚酸根（[C ₆ COO] ^-）阴离子。使用 Kissinger-Akahira-Sunose isoconversional 方法进行动力学分析。结果表明，羧酸盐离子液体的热稳定性低于其溴化物类似物，热稳定性的顺序可以通过动力学参数（E _a和 ln A）的值及其随α的变化来解释。对于大多数研究的羧酸盐离子液体，随着分解的进行，E _a存在相当大的变化，表明存在多个分解步骤。^通过1 H NMR光谱分析热降解残留物，研究了热分解机理。