磺酸功能化离子液体催化合成乙酸正丁酯

发布时间：2018-04-12 09:58

本文选题：磺酸功能化 + 离子液体　；参考：《化学工程》2017年11期

【摘要】：为符合绿色化学的要求,解决传统酯化反应催化剂浓硫酸设备腐蚀、副反应多等问题,以价格低廉的吗啡啉为原料,设计合成了1-(3-磺酸基)丙基-3-甲基吗啡啉甲磺酸盐[Mor-C_3SO_3H]MeSO_3等4种磺酸功能化离子液体,利用傅里叶变换红外光谱和核磁氢谱对产品的结构进行了表征,并通过催化合成乙酸正丁酯考察离子液体的催化活性。结果表明:当乙酸与正丁醇摩尔比为1.2∶1,催化剂[Mor-C_3SO_3H]MeSO_3用量为正丁醇质量的5%,带水剂环己烷用量为正丁醇质量的20%,在95℃下,反应5 h,乙酸正丁酯收率可达96.44%,离子液体经回收干燥重复使用7次酯收率仍在94%以上。
[Abstract]:To meet the requirements of green chemistry, solve the traditional esterification catalyst of sulfuric acid corrosion of the equipment problems, many side reactions, using inexpensive morpholine as raw materials, 1- was designed and synthesized (3- sulfonic acid) -3- methyl propyl morpholine mesylate [Mor-C_3SO_3H]MeSO_3 4 sulfonic acid functionalized ionic liquid, is characterized for the product the structure by Fourier transform infrared spectroscopy and 1H NMR, catalytic activity and synthesis of n-Butyl Acetate Catalyzed by ionic liquids investigated. The results showed that when the molar ratio of acetic acid and n-butanol was 1.2: 1, the catalyst dosage is Mor-C_3SO_3H]MeSO_3 [n-butanol quality 5%, the amount of cyclohexane was n-butanol quality 20%, under the temperature of 95 DEG C 5 h, reaction, n-butyl acetate yield of 96.44%, ionic liquids recovered and reused 7 times dry yield was more than 94%.

【作者单位】：石家庄新宇三阳实业有限公司;河北科技大学化学与制药工程学院;
【基金】：石家庄市科学技术研究与发展计划资助项目(161070251A)
【分类号】：O643.36;TQ225.24

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