| 杂多酸催化棓酸正丁酯酯化反应研究 |
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| 引用本文： | 杨喜平,刘建平,马雪萍. 杂多酸催化棓酸正丁酯酯化反应研究[J]. 应用化工, 2005, 34(10): 613-615 |
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| 作者姓名： | 杨喜平 刘建平 马雪萍 |
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| 作者单位： | 河南工业大学化学化工系,河南郑州450052 |
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| 基金项目： | 河南工业大学科研基金资助项目(0302009) |
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| 摘 要： | 研究了以磷钼酸和磷钨酸为催化剂,由棓酸和正丁醇制备棓酸正丁酯的反应。考察了不同的催化剂用量、醇用量、反应时间对棓酸正丁酯产率的影响。确定了最佳反应条件,棓酸与催化剂磷钼酸的摩尔比为1∶0.0322,丁醇90 mL,反应时间2.5 h;棓酸与催化剂磷钨酸的摩尔比为1∶0.02084,丁醇80 mL,反应时间2.5 h,平均酯化率分别为84.3%和80.2%。在棓酸正丁酯的合成中,采用磷钨酸作催化剂时优于磷钼酸。
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| 关 键 词： | 杂多酸 催化 棓酸正丁酯 |
| 文章编号： | 1671-3206(2005)10-0613-02 |
| 修稿时间： | 2005-07-07 |
Study on preparation of the n-butyl gallate with phosphato-molybdic acid and phosphato-tungstic acid as catalyst |
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| YANG Xi-ping,LIU Jian-ping,MA Xue-ping. Study on preparation of the n-butyl gallate with phosphato-molybdic acid and phosphato-tungstic acid as catalyst[J]. Applied chemical industry, 2005, 34(10): 613-615 |
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| Authors: | YANG Xi-ping LIU Jian-ping MA Xue-ping |
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| Abstract: | The n-butyl gallate was synthesized by esterifying n-butyl alcohol and gallic acid in the presence of phosphato-molybdic acid and phosphato-tungstic acid catalyst.The preparation conditions have been investigated.The optimal reaction conditions are as follows:the mole ratio of gallic acid to phosphato-molybdic acid was 1∶0.0322,the quantities of butyl alcohol and reaction time were 90 mL and 2.5 h respectively;the mole ratio of gallic acid to phosphato-tungstic acid was 1∶0.02084,the quantities of butyl alcohol and reaction time were 80 mL and 2.5 h respectively.The average yield of butyl gallate were(84.3%)(phosphato-molybdic acid) and 80.2%(phosphato-tungstic acid) respectively.It is found that the phosphato-tungstic acid catalyst was better than phosphato-molybdic acid catalyst in the esterification of n-butyl gallate. |
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| Keywords: | heteropoly acid catalytic gallate |
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