| 杂多酸催化合成对羟基苯甲酸正丁酯 |
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| 引用本文： | 丁健桦,康文,陈金凤.杂多酸催化合成对羟基苯甲酸正丁酯[J].精细石油化工,2003(1):35-37. |
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| 作者姓名： | 丁健桦 康文 陈金凤 |
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| 作者单位： | 东华理工学院应化系,江西,抚州,344000 |
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| 摘 要： | 比较了多种杂多酸催化合成对羟基苯甲酸正丁酯的反应 ,找到了硅钨酸为最佳催化剂 ,并得出了反应的最优化条件 ,即醇酸摩尔比为 4∶1,催化剂用量为 0 .2 g/ 0 .0 2 5mol对羟基苯甲酸 ,反应温度为 110～ 130℃ ,反应时间为 4h时 ,酯的产率可达 86 .6 %。实验发现该催化剂催化活性较高、选择性好、可重复使用 5次 ,且对设备无腐蚀 ,是一种环境友好的催化剂。
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| 关 键 词： | 杂多酸 催化剂 对羟基苯甲酸正丁酯 |
| 修稿时间： | 2002年7月30日 |
CATALYTIC SYNTHESIS OF n-BUTYL p-HYDROXYBENZOATE ON HETEROPOLY-ACID |
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| Ding Jianhua,Kang Wen and Chen Jinfeng.CATALYTIC SYNTHESIS OF n-BUTYL p-HYDROXYBENZOATE ON HETEROPOLY-ACID[J].Speciality Petrochemicals,2003(1):35-37. |
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| Authors: | Ding Jianhua Kang Wen and Chen Jinfeng |
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| Abstract: | Various heteropoly acids were compared as catalyst in synthesis of n -butyl p -hydroxybenzoate, and the silicotungstic acid was found to be better than the others. The optimum synthesis conditions were found as follows: molar ratio of alcohol to acid 4∶1, the amount of catalyst 0.2 g/0.025 mol acid, reaction temperature 110130 ℃, and reaction time 4 h. The yield of the ester could reach 86.6%. This catalyst has good activity and selectivity, could be reused for 5 times and are friendly with environment. |
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| Keywords: | heteropoly acid catalyst n -butyl p -hydroxybenzoate |
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