| 超声波辅助强酸性阳离子交换树脂催化合成乙酰水杨酸的研究 |
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| 引用本文： | 刘小玲. 超声波辅助强酸性阳离子交换树脂催化合成乙酰水杨酸的研究[J]. 应用化工, 2010, 39(7): 1045-1047 |
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| 作者姓名： | 刘小玲 |
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| 作者单位： | 广东梅州嘉应学院化学与环境学院,广东,梅州,514015 |
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| 摘 要： | 用强酸性阳离子交换树脂为催化剂,以水杨酸和乙酸酐为反应原料,通过超声波辐射加热快速合成了乙酰水杨酸。最佳合成条件为:原料摩尔比乙酸酐∶水杨酸=3∶1,超声频率59 Hz,辐射时间25 min,反应温度70~75℃,催化剂用量0.5 g,产率达到92%,催化剂重复5次后仍然达到很高的产率。该法反应时间短,操作简单,催化剂可重复利用,环境友好,节约能源。
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| 关 键 词： | 乙酰水杨酸 合成 超声辐射 强酸性阳离子交换树脂 |
Synthesis of acetylsaicylic acid catalyzed by strong acidic cationic exchange resin under ultrasound irradiation |
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| LIU Xiao-ling. Synthesis of acetylsaicylic acid catalyzed by strong acidic cationic exchange resin under ultrasound irradiation[J]. Applied chemical industry, 2010, 39(7): 1045-1047 |
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| Authors: | LIU Xiao-ling |
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| Abstract: | Acetylsaicylic acid is synthesized under ultrasound irradiation using salicylic and acetic acid anhydride as raw materials and catalyzed by strong acidic cationic exchang resin.The optimum reaction conditions are as follows:molar ratio of acetic acid anhydride to salicylic acid is 3 ∶1,and the irradiation frequency is 59 Hz,the irradiation time is 25 min,the temperature 70～75 ℃,the catalyst 0.5 g,the yield was over 92%.The catalyst retains its activity after reuse 5 times.The main advances of this methodology are short reaction time,high yield,convenient manipulation and eco-friendly environment. |
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| Keywords: | acetylsalicylic acid synthesis ultrasound irradiation strong acidic cationic exchange resin |
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