| 熊瑞霞, 刘宁, 聂炜峻, 冯启怀, 何思思, 葛梦晨, 陈思琪, 罗婷.环己胺基酸性离子液体高效催化合成油酸甲酯[J].中国油脂,2026,51(5):.[XIONG Ruixia, LIU Ning, NIE Weijun, FENG Qihuai, HE Sisi,
GE Mengchen, CHEN Siqi, LUO Ting.Highly efficient synthesis of methyl oleate catalyzed by cyclohexylamine-based acidic ionic liquids[J].China Oils and Fats,2026,51(5):.] |
| 环己胺基酸性离子液体高效催化合成油酸甲酯 |
| Highly efficient synthesis of methyl oleate catalyzed by cyclohexylamine-based acidic ionic liquids |
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| DOI：10.19902/j.cnki.zgyz.1003-7969.250144 |
| 中文关键词: 环己胺基离子液体 酸性 酯化反应 油酸 生物柴油 |
| 英文关键词:cyclohexylamine-based ionic liquid acidic esterification reaction oleic acid biodiesel |
| 基金项目: |
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| Author Name | Affiliation | | XIONG Ruixia, LIU Ning, NIE Weijun, FENG Qihuai, HE Sisi,
GE Mengchen, CHEN Siqi, LUO Ting | Department of Chemistry and Environmental Engineering, Hunan Institute of
Technology, Hengyang 421002, Hunan, China |
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| 中文摘要: |
| 为开发用于高效合成油酸甲酯的离子液体催化剂，设计并合成了3种环己胺基酸性离子液体，即N-(3-磺丙基)-N，N-二甲基环己胺甲烷磺酸盐（\[SDMC\]MS）、N-(3-磺丙基)-N，N-二甲基环己胺硫酸氢盐（\[SDMC\]HS）和N-(3-磺丙基)-N，N-二甲基环己胺对甲苯磺酸盐（\[SDMC\]PTS），对其性质进行表征，并将其应用于油酸与甲醇的酯化反应中。结果表明：所制备的3种环己胺基酸性离子液体均具有良好的热稳定性，在水等极性溶剂中可溶，在非极性或弱极性溶剂中不溶，且\[SDMC\]HS的酸强度最大；在催化剂用量2.5 mmol（油酸质量5.0 g）、反应时间2 h、甲醇与油酸质量比11∶ 5、反应温度70 ℃的条件下，\[SDMC\]MS、\[SDMC\]HS和\[SDMC\]PTS的油酸转化率分别为95.0%、96.6%和95.7%。其中，\[SDMC\]HS与\[SDMC\]PTS的催化性能尤为突出，在使用5次后，二者对油酸转化率依然保持在91%以上。综上，该环己胺基酸性离子液体具有高催化活性、优良热稳定性和良好的可重复使用性，是催化合成油酸甲酯的高效催化剂。 |
| 英文摘要: |
| To develop ionic liquid catalysts for the efficient synthesis of methyl oleate, three cyclohexylamine-based acidic ionic liquids, including N-(3-sulfopropyl)-N, N-dimethylcyclohexylamine methanesulfonate (\[SDMC\]MS)、N-(3-sulfopropyl)-N, N-dimethylcyclohexylamine hydrogen sulfate (\[SDMC\]HS) and N-(3-sulfopropyl)-N, N-dimethylcyclohexylamine p-toluenesulfonate (\[SDMC\]PTS), were designed and synthesized. The properties of the ionic liquids were characterized, and the prepared ionic liquids were applied in the esterification reaction of oleic acid and methanol. The results showed that all the synthesized ionic liquids displayed good thermal stability and were soluble in polar solvents such as water, while insoluble in non-polar or weakly polar solvents. In particular, \[SDMC\]HS possessed relatively higher acidity. Under the optimized conditions (2.5 mmol catalyst (oleic acid mass 5.0 g), reaction time 2 h, mass ratio of methanol to oleic acid 11∶ 5, reaction temperature 70 ℃), the oleic acid conversions catalyzed by \[SDMC\]MS, \[SDMC\]HS and \[SDMC\]PTS were 95.0%, 96.6% and 95.7%, respectively. Notably, \[SDMC\]HS and \[SDMC\]PTS had remarkable catalytic activity, and retained over 91% oleic acid conversion after five cycles. In conclusion, the cyclohexylamine-based acidic ionic liquid, characterized by high catalytic activity, excellent thermal stability, and good reusability, serves as a highly efficient catalyst for the catalytic synthesis of methyl oleate. |
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