| 固体超强酸催化丙烯酸和十八醇的反应研究 |
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| 引用本文： | 刘祥义,徐晓军. 固体超强酸催化丙烯酸和十八醇的反应研究[J]. 精细化工中间体, 2005, 35(3): 37-39 |
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| 作者姓名： | 刘祥义 徐晓军 |
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| 作者单位： | 昆明理工大学,环境工程学院,云南,昆明,650092;西南林学院,基础部,云南,昆明,650224;昆明理工大学,环境工程学院,云南,昆明,650092 |
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| 摘 要： | 以丙烯酸和十八醇为原料,采用固体超强酸为催化剂,对苯二酚为阻聚剂,用甲苯为携水剂制备丙烯酸十八酯。比较浓硫酸,对甲苯磺酸,固体超强酸对酯化反应的影响。研究了诸因素对合成反应的影响。并用红外光谱对产物进行了表征。固体超强酸SO42-/TiO2制备条件:0.5mol/L硫酸浸泡8 h,550℃焙烧4 h。丙烯酸十八酯的优化工艺条件为:丙烯酸与十八醇的摩尔比为1.2,固体超强酸及对苯二酚的用量(质量分数)分别为6%、0.8%,反应温度为120℃,反应时间为3 h。在此反应条件下,酯化收率可达97%。
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| 关 键 词： | 丙烯酸 十八醇 丙烯酸十八酯 固体超强酸 |
| 文章编号： | 1009-9212(2005)03-0037-03 |
| 修稿时间： | 2004-12-23 |
Esterification Reaction of Acrylic Acid and Octadecyl Alcohol with Solid Super Acid |
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| LIU Xiang-yi,XU Xiao-jun. Esterification Reaction of Acrylic Acid and Octadecyl Alcohol with Solid Super Acid[J]. Fine Chemical Intermediates, 2005, 35(3): 37-39 |
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| Authors: | LIU Xiang-yi XU Xiao-jun |
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| Affiliation: | LIU Xiang-yi~ |
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| Abstract: | Octadecyl acrylate was synthesized by direct esterification from octadecyl alcohol and acrylic acid using solid super acid as catalyst, and hydroquinonone as hibitor. The effects of various factors on esterification were investigated. The product was further verified with IR. The experiment results showed that the optimum reaction condition were as follow: concentration of H_(2)SO_(4) was 0.5 mol/L, calcinations time were 4 h at the temperature 550℃, the molar ratio of acrylic acid to octadecyl alcohol was 1.2,the amounts of solid super acid SO_4~(2-)/TiO_(2) and hibitor were 6.0% and 0.8% respectively, reaction temperature and time were 120℃and 3h.In this condition, the percentage of esterification of octadecyl acrylate was 97%. |
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| Keywords: | acrylic acid octadecyl alcohol octadecyl acrylate solid super acid |
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